AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsTechnology, Industry, AgricultureInformation ScienceHealth Care
Finite Element AnalysisStress, MechanicalBite ForceModels, AnatomicBiomechanical PhenomenaElastic ModulusDental Prosthesis DesignDental Stress AnalysisComputer SimulationWeight-BearingDental AbutmentsCompressive StrengthDental Implant-Abutment DesignDenture, OverlayMasticationElasticityTooth, NonvitalDenture DesignModels, BiologicalPost and Core TechniqueAlveolar ProcessTensile StrengthComputer-Aided DesignImaging, Three-DimensionalPeriodontal LigamentMaterials TestingDenture RetentionDental PorcelainMandibleCrownsDental ImplantsTooth RootSkullImmediate Dental Implant LoadingPliabilityEustachian TubeDenture, Partial, RemovableDental MaterialsMasticatory MusclesModels, CardiovascularMaxillaDenture, Partial, FixedGold AlloysEquipment Failure AnalysisDental Prosthesis, Implant-SupportedFemurDental ClaspsMechanical PhenomenaDinosaursX-Ray MicrotomographyAnatomy, ComparativeGlassDental Restoration FailureComposite ResinsShear StrengthDentinDenture, Partial, Fixed, Resin-BondedTitaniumGenu ValgumIncisorTomography, X-Ray ComputedIntervertebral DiscLumbar VertebraeTooth Preparation, ProsthodonticBicuspidSpineMolarInlaysPelvic BonesHardness TestsCadaverHardnessStomatognathic SystemOsteotomy, Sagittal Split RamusToothTooth MovementProstheses and ImplantsTemporomandibular JointDental CementsAnatomy, Cross-SectionalBone ScrewsEquipment DesignDental ModelsDental AlloysSurface PropertiesModels, TheoreticalOsseointegrationBone CementsReproducibility of ResultsBone PlatesDental OcclusionNonlinear DynamicsButtocksCuspidTibiaAnisotropyJawProsthesis DesignZygomaBone and Bones
Finite Element Analysis
A computer based method of simulating or analyzing the behavior of structures or components.
Stress, Mechanical
A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
Bite Force
The force applied by the masticatory muscles in dental occlusion.
Models, Anatomic
Three-dimensional representation to show anatomic structures. Models may be used in place of intact animals or organisms for teaching, practice, and study.
Biomechanical Phenomena
The properties, processes, and behavior of biological systems under the action of mechanical forces.
Elastic Modulus
Numerical expression indicating the measure of stiffness in a material. It is defined by the ratio of stress in a unit area of substance to the resulting deformation (strain). This allows the behavior of a material under load (such as bone) to be calculated.
Dental Prosthesis Design
The plan and delineation of dental prostheses in general or a specific dental prosthesis. It does not include DENTURE DESIGN. The framework usually consists of metal.
Dental Stress Analysis
The description and measurement of the various factors that produce physical stress upon dental restorations, prostheses, or appliances, materials associated with them, or the natural oral structures.
Computer Simulation
Computer-based representation of physical systems and phenomena such as chemical processes.
Weight-Bearing
The physical state of supporting an applied load. This often refers to the weight-bearing bones or joints that support the body's weight, especially those in the spine, hip, knee, and foot.
Dental Abutments
Natural teeth or teeth roots used as anchorage for a fixed or removable denture or other prosthesis (such as an implant) serving the same purpose.
Compressive Strength
The maximum compression a material can withstand without failure. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p427)
Dental Implant-Abutment Design
The plan and delineation of DENTAL IMPLANT fitting with DENTAL ABUTMENT.
Denture, Overlay
Removable prosthesis constructed over natural teeth or implanted studs.
Mastication
The act and process of chewing and grinding food in the mouth.
Elasticity
Resistance and recovery from distortion of shape.
Tooth, Nonvital
A tooth from which the dental pulp has been removed or is necrotic. (Boucher, Clinical Dental Terminology, 4th ed)
Denture Design
The plan, delineation, and location of actual structural elements of dentures. The design can relate to retainers, stress-breakers, occlusal rests, flanges, framework, lingual or palatal bars, reciprocal arms, etc.
Models, Biological
Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.
Post and Core Technique
Use of a metal casting, usually with a post in the pulp or root canal, designed to support and retain an artificial crown.
Alveolar Process
The thickest and spongiest part of the maxilla and mandible hollowed out into deep cavities for the teeth.
Tensile Strength
The maximum stress a material subjected to a stretching load can withstand without tearing. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p2001)
Computer-Aided Design
The use of computers for designing and/or manufacturing of anything, including drugs, surgical procedures, orthotics, and prosthetics.
Imaging, Three-Dimensional
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
Periodontal Ligament
The fibrous CONNECTIVE TISSUE surrounding the TOOTH ROOT, separating it from and attaching it to the alveolar bone (ALVEOLAR PROCESS).
Materials Testing
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
Denture Retention
The retention of a denture in place by design, device, or adhesion.
Dental Porcelain
A type of porcelain used in dental restorations, either jacket crowns or inlays, artificial teeth, or metal-ceramic crowns. It is essentially a mixture of particles of feldspar and quartz, the feldspar melting first and providing a glass matrix for the quartz. Dental porcelain is produced by mixing ceramic powder (a mixture of quartz, kaolin, pigments, opacifiers, a suitable flux, and other substances) with distilled water. (From Jablonski's Dictionary of Dentistry, 1992)
Mandible
The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth.
Crowns
A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin.
Dental Implants
Biocompatible materials placed into (endosseous) or onto (subperiosteal) the jawbone to support a crown, bridge, or artificial tooth, or to stabilize a diseased tooth.
Tooth Root
The part of a tooth from the neck to the apex, embedded in the alveolar process and covered with cementum. A root may be single or divided into several branches, usually identified by their relative position, e.g., lingual root or buccal root. Single-rooted teeth include mandibular first and second premolars and the maxillary second premolar teeth. The maxillary first premolar has two roots in most cases. Maxillary molars have three roots. (Jablonski, Dictionary of Dentistry, 1992, p690)
Skull
The SKELETON of the HEAD including the FACIAL BONES and the bones enclosing the BRAIN.
Immediate Dental Implant Loading
Endosseous dental implantation where implants are fitted with an abutment or where an implant with a transmucosal coronal portion is used immediately (within 1 week) after the initial extraction. Conventionally, the implantation is performed in two stages with more than two months in between the stages.
Pliability
The quality or state of being able to be bent or creased repeatedly. (From Webster, 3d ed)
Eustachian Tube
A narrow passageway that connects the upper part of the throat to the TYMPANIC CAVITY.
Denture, Partial, Removable
A partial denture designed and constructed to be removed readily from the mouth.
Dental Materials
Materials used in the production of dental bases, restorations, impressions, prostheses, etc.
Masticatory Muscles
Muscles arising in the zygomatic arch that close the jaw. Their nerve supply is masseteric from the mandibular division of the trigeminal nerve. (From Stedman, 25th ed)
Models, Cardiovascular
Theoretical representations that simulate the behavior or activity of the cardiovascular system, processes, or phenomena; includes the use of mathematical equations, computers and other electronic equipment.
Maxilla
One of a pair of irregularly shaped bones that form the upper jaw. A maxillary bone provides tooth sockets for the superior teeth, forms part of the ORBIT, and contains the MAXILLARY SINUS.
Denture, Partial, Fixed
A partial denture attached to prepared natural teeth, roots, or implants by cementation.
Gold Alloys
Alloys that contain a high percentage of gold. They are used in restorative or prosthetic dentistry.
Equipment Failure Analysis
The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.
Dental Prosthesis, Implant-Supported
A prosthesis that gains its support, stability, and retention from a substructure that is implanted under the soft tissues of the basal seat of the device and is in contact with bone. (From Boucher's Clinical Dental Terminology, 4th ed)
Femur
The longest and largest bone of the skeleton, it is situated between the hip and the knee.
Dental Clasps
Metal devices for fastening together two or more parts of dental prostheses for stabilizing or retaining them by attachment to abutment teeth. For a precision attachment for a partial denture DENTURE PRECISION ATTACHMENT is available.
Mechanical Phenomena
The properties and processes of materials that affect their behavior under force.
Dinosaurs
General name for two extinct orders of reptiles from the Mesozoic era: Saurischia and Ornithischia.
X-Ray Microtomography
X-RAY COMPUTERIZED TOMOGRAPHY with resolution in the micrometer range.
Anatomy, Comparative
The comparative study of animal structure with regard to homologous organs or parts. (Stedman, 25th ed)
Glass
Hard, amorphous, brittle, inorganic, usually transparent, polymerous silicate of basic oxides, usually potassium or sodium. It is used in the form of hard sheets, vessels, tubing, fibers, ceramics, beads, etc.
Dental Restoration Failure
Inability or inadequacy of a dental restoration or prosthesis to perform as expected.
Composite Resins
Synthetic resins, containing an inert filler, that are widely used in dentistry.
Shear Strength
The internal resistance of a material to moving some parts of it parallel to a fixed plane, in contrast to stretching (TENSILE STRENGTH) or compression (COMPRESSIVE STRENGTH). Ionic crystals are brittle because, when subjected to shear, ions of the same charge are brought next to each other, which causes repulsion.
Dentin
The hard portion of the tooth surrounding the pulp, covered by enamel on the crown and cementum on the root, which is harder and denser than bone but softer than enamel, and is thus readily abraded when left unprotected. (From Jablonski, Dictionary of Dentistry, 1992)
Denture, Partial, Fixed, Resin-Bonded
A commonly used prosthesis that results in a strong, permanent restoration. It consists of an electrolytically etched cast-metal retainer that is cemented (bonded), using resins, to adjacent teeth whose enamel was previously acid-treated (acid-etched). This type of bridgework is sometimes referred to as a Maryland bridge.
Titanium
A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)
Genu Valgum
An inward slant of the thigh in which the knees are close together and the ankles far apart. Genu valgum can develop due to skeletal and joint dysplasias (e.g., OSTEOARTHRITIS; HURLER SYNDROME); and malnutrition (e.g., RICKETS; FLUORIDE POISONING).
Incisor
Any of the eight frontal teeth (four maxillary and four mandibular) having a sharp incisal edge for cutting food and a single root, which occurs in man both as a deciduous and a permanent tooth. (Jablonski, Dictionary of Dentistry, 1992, p820)
Tomography, X-Ray Computed
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Intervertebral Disc
Any of the 23 plates of fibrocartilage found between the bodies of adjacent VERTEBRAE.
Lumbar Vertebrae
VERTEBRAE in the region of the lower BACK below the THORACIC VERTEBRAE and above the SACRAL VERTEBRAE.
Tooth Preparation, Prosthodontic
The selected form given to a natural tooth when it is reduced by instrumentation to receive a prosthesis (e.g., artificial crown or a retainer for a fixed or removable prosthesis). The selection of the form is guided by clinical circumstances and physical properties of the materials that make up the prosthesis. (Boucher's Clinical Dental Terminology, 4th ed, p239)
Bicuspid
One of the eight permanent teeth, two on either side in each jaw, between the canines (CUSPID) and the molars (MOLAR), serving for grinding and crushing food. The upper have two cusps (bicuspid) but the lower have one to three. (Jablonski, Dictionary of Dentistry, 1992, p822)
Spine
The spinal or vertebral column.
Molar
The most posterior teeth on either side of the jaw, totaling eight in the deciduous dentition (2 on each side, upper and lower), and usually 12 in the permanent dentition (three on each side, upper and lower). They are grinding teeth, having large crowns and broad chewing surfaces. (Jablonski, Dictionary of Dentistry, 1992, p821)
Inlays
Restorations of metal, porcelain, or plastic made to fit a cavity preparation, then cemented into the tooth. Onlays are restorations which fit into cavity preparations and overlay the occlusal surface of a tooth or teeth. Onlays are retained by frictional or mechanical factors.
Pelvic Bones
Bones that constitute each half of the pelvic girdle in VERTEBRATES, formed by fusion of the ILIUM; ISCHIUM; and PUBIC BONE.
Hardness Tests
A test to determine the relative hardness of a metal, mineral, or other material according to one of several scales, such as Brinell, Mohs, Rockwell, Vickers, or Shore. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Cadaver
A dead body, usually a human body.
Hardness
The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.
Stomatognathic System
The mouth, teeth, jaws, pharynx, and related structures as they relate to mastication, deglutition, and speech.
Osteotomy, Sagittal Split Ramus
Sagittal sectioning and repositioning of the ramus of the MANDIBLE to correct a mandibular retrusion, MALOCCLUSION, ANGLE CLASS III; and PROGNATHISM. The oblique sectioning line consists of multiple cuts horizontal and vertical to the mandibular ramus.
Tooth
One of a set of bone-like structures in the mouth used for biting and chewing.
Tooth Movement
Orthodontic techniques used to correct the malposition of a single tooth.
Prostheses and Implants
Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.
Temporomandibular Joint
An articulation between the condyle of the mandible and the articular tubercle of the temporal bone.
Dental Cements
Substances used to bond COMPOSITE RESINS to DENTAL ENAMEL and DENTIN. These bonding or luting agents are used in restorative dentistry, ROOT CANAL THERAPY; PROSTHODONTICS; and ORTHODONTICS.
Anatomy, Cross-Sectional
Descriptive anatomy based on three-dimensional imaging (IMAGING, THREE-DIMENSIONAL) of the body, organs, and structures using a series of computer multiplane sections, displayed by transverse, coronal, and sagittal analyses. It is essential to accurate interpretation by the radiologist of such techniques as ultrasonic diagnosis, MAGNETIC RESONANCE IMAGING, and computed tomography (TOMOGRAPHY, X-RAY COMPUTED). (From Lane & Sharfaei, Modern Sectional Anatomy, 1992, Preface)
Bone Screws
Specialized devices used in ORTHOPEDIC SURGERY to repair bone fractures.
Equipment Design
Methods of creating machines and devices.
Dental Models
Presentation devices used for patient education and technique training in dentistry.
Dental Alloys
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions for use in restorative or prosthetic dentistry.
Surface Properties
Characteristics or attributes of the outer boundaries of objects, including molecules.
Models, Theoretical
Theoretical representations that simulate the behavior or activity of systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.
Osseointegration
The growth action of bone tissue as it assimilates surgically implanted devices or prostheses to be used as either replacement parts (e.g., hip) or as anchors (e.g., endosseous dental implants).
Bone Cements
Adhesives used to fix prosthetic devices to bones and to cement bone to bone in difficult fractures. Synthetic resins are commonly used as cements. A mixture of monocalcium phosphate, monohydrate, alpha-tricalcium phosphate, and calcium carbonate with a sodium phosphate solution is also a useful bone paste.
Reproducibility of Results
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Bone Plates
Implantable fracture fixation devices attached to bone fragments with screws to bridge the fracture gap and shield the fracture site from stress as bone heals. (UMDNS, 1999)
Dental Occlusion
The relationship of all the components of the masticatory system in normal function. It has special reference to the position and contact of the maxillary and mandibular teeth for the highest efficiency during the excursive movements of the jaw that are essential for mastication. (From Jablonski, Dictionary of Dentistry, 1992, p556, p472)
Nonlinear Dynamics
The study of systems which respond disproportionately (nonlinearly) to initial conditions or perturbing stimuli. Nonlinear systems may exhibit "chaos" which is classically characterized as sensitive dependence on initial conditions. Chaotic systems, while distinguished from more ordered periodic systems, are not random. When their behavior over time is appropriately displayed (in "phase space"), constraints are evident which are described by "strange attractors". Phase space representations of chaotic systems, or strange attractors, usually reveal fractal (FRACTALS) self-similarity across time scales. Natural, including biological, systems often display nonlinear dynamics and chaos.
Buttocks
Either of two fleshy protuberances at the lower posterior section of the trunk or HIP in humans and primate on which a person or animal sits, consisting of gluteal MUSCLES and fat.
Cuspid
The third tooth to the left and to the right of the midline of either jaw, situated between the second INCISOR and the premolar teeth (BICUSPID). (Jablonski, Dictionary of Dentistry, 1992, p817)
Tibia
The second longest bone of the skeleton. It is located on the medial side of the lower leg, articulating with the FIBULA laterally, the TALUS distally, and the FEMUR proximally.
Anisotropy
A physical property showing different values in relation to the direction in or along which the measurement is made. The physical property may be with regard to thermal or electric conductivity or light refraction. In crystallography, it describes crystals whose index of refraction varies with the direction of the incident light. It is also called acolotropy and colotropy. The opposite of anisotropy is isotropy wherein the same values characterize the object when measured along axes in all directions.
Jaw
Bony structure of the mouth that holds the teeth. It consists of the MANDIBLE and the MAXILLA.
Prosthesis Design
The plan and delineation of prostheses in general or a specific prosthesis.
Zygoma
Either of a pair of bones that form the prominent part of the CHEEK and contribute to the ORBIT on each side of the SKULL.
Bone and Bones
A specialized CONNECTIVE TISSUE that is the main constituent of the SKELETON. The principle cellular component of bone is comprised of OSTEOBLASTS; OSTEOCYTES; and OSTEOCLASTS, while FIBRILLAR COLLAGENS and hydroxyapatite crystals form the BONE MATRIX.
Porosity
Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.
Bone Density
The amount of mineral per square centimeter of BONE. This is the definition used in clinical practice. Actual bone density would be expressed in grams per milliliter. It is most frequently measured by X-RAY ABSORPTIOMETRY or TOMOGRAPHY, X RAY COMPUTED. Bone density is an important predictor for OSTEOPOROSIS.
Transducers
Any device or element which converts an input signal into an output signal of a different form. Examples include the microphone, phonographic pickup, loudspeaker, barometer, photoelectric cell, automobile horn, doorbell, and underwater sound transducer. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)
Spinal Fractures
Broken bones in the vertebral column.
DNA Transposable Elements
Discrete segments of DNA which can excise and reintegrate to another site in the genome. Most are inactive, i.e., have not been found to exist outside the integrated state. DNA transposable elements include bacterial IS (insertion sequence) elements, Tn elements, the maize controlling elements Ac and Ds, Drosophila P, gypsy, and pogo elements, the human Tigger elements and the Tc and mariner elements which are found throughout the animal kingdom.
Pressure
A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Range of Motion, Articular
The distance and direction to which a bone joint can be extended. Range of motion is a function of the condition of the joints, muscles, and connective tissues involved. Joint flexibility can be improved through appropriate MUSCLE STRETCHING EXERCISES.
Mechanical Processes
The behaviors of materials under force.
Aortic Rupture
The tearing or bursting of the wall along any portion of the AORTA, such as thoracic or abdominal. It may result from the rupture of an aneurysm or it may be due to TRAUMA.
Dental Bonding
An adhesion procedure for orthodontic attachments, such as plastic DENTAL CROWNS. This process usually includes the application of an adhesive material (DENTAL CEMENTS) and letting it harden in-place by light or chemical curing.
Resin Cements
Dental cements composed either of polymethyl methacrylate or dimethacrylate, produced by mixing an acrylic monomer liquid with acrylic polymers and mineral fillers. The cement is insoluble in water and is thus resistant to fluids in the mouth, but is also irritating to the dental pulp. It is used chiefly as a luting agent for fabricated and temporary restorations. (Jablonski's Dictionary of Dentistry, 1992, p159)
Algorithms
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
Image Processing, Computer-Assisted
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.
Acetabulum
The part of the pelvis that comprises the pelvic socket where the head of FEMUR joins to form HIP JOINT (acetabulofemoral joint).
Response Elements
Nucleotide sequences, usually upstream, which are recognized by specific regulatory transcription factors, thereby causing gene response to various regulatory agents. These elements may be found in both promoter and enhancer regions.
Bone Remodeling
The continuous turnover of BONE MATRIX and mineral that involves first an increase in BONE RESORPTION (osteoclastic activity) and later, reactive BONE FORMATION (osteoblastic activity). The process of bone remodeling takes place in the adult skeleton at discrete foci. The process ensures the mechanical integrity of the skeleton throughout life and plays an important role in calcium HOMEOSTASIS. An imbalance in the regulation of bone remodeling's two contrasting events, bone resorption and bone formation, results in many of the metabolic bone diseases, such as OSTEOPOROSIS.

Balloon-artery interactions during stent placement: a finite element analysis approach to pressure, compliance, and stent design as contributors to vascular injury. (1/1327)

Endovascular stents expand the arterial lumen more than balloon angioplasty and reduce rates of restenosis after coronary angioplasty in selected patients. Understanding the factors involved in vascular injury imposed during stent deployment may allow optimization of stent design and stent-placement protocols so as to limit vascular injury and perhaps reduce restenosis. Addressing the hypothesis that a previously undescribed mechanism of vascular injury during stent deployment is balloon-artery interaction, we have used finite element analysis to model how balloon-artery contact stress and area depend on stent-strut geometry, balloon compliance, and inflation pressure. We also examined superficial injury during deployment of stents of varied design in vivo and in a phantom model ex vivo to show that balloon-induced damage can be modulated by altering stent design. Our results show that higher inflation pressures, wider stent-strut openings, and more compliant balloon materials cause markedly larger surface-contact areas and contact stresses between stent struts. Appreciating that the contact stress and contact area are functions of placement pressure, stent geometry, and balloon compliance may help direct development of novel stent designs and stent-deployment protocols so as to minimize vascular injury during stenting and perhaps to optimize long-term outcomes.  (+info)

Diffusion tensor imaging in biomechanical studies of skeletal muscle function. (2/1327)

In numerical simulations of skeletal muscle contractions, geometric information is of major importance. The aim of the present study was to determine whether the diffusion tensor imaging (DTI) technique is suitable to obtain valid input with regard to skeletal muscle fibre direction. The accuracy of the DTI method was therefore studied by comparison of DTI fibre directions in the rat tibialis anterior muscle with fascicle striation patterns visible on high-resolution magnetic resonance imaging (MRI) and with fibre directions in an actual longitudinal section (ALS) through the same muscle. The results showed an excellent qualitative agreement between high-resolution MRI and DTI. Despite less accurate quantitative comparison with ALS, it was concluded that DTI does indeed measure skeletal muscle fibre direction. After the experiment, it was possible to determine an appropriate voxel size (0.9 mm3) that provided enough resolution and acceptable accuracy (5 degrees) to use DTI fibre directions in biomechanical analyses. Muscle deformation during contraction, resulting from a finite element simulation with a mesh that was directly generated from the experimental data, has been presented.  (+info)

Red cell distribution and the recruitment of pulmonary diffusing capacity. (3/1327)

The distribution of red blood cells in alveolar capillaries is typically nonuniform, as shown by intravital microscopy and in alveolar tissue fixed in situ. To determine the effects of red cell distribution on pulmonary diffusive gas transport, we computed the uptake of CO across a two-dimensional geometric capillary model containing a variable number of red blood cells. Red blood cells are spaced uniformly, randomly, or clustered without overlap within the capillary. Total CO diffusing capacity (DLCO) and membrane diffusing capacity (DmCO) are calculated by a finite-element method. Results show that distribution of red blood cells at a fixed hematocrit greatly affects capillary CO uptake. At any given average capillary red cell density, the uniform distribution of red blood cells yields the highest DmCO and DLCO, whereas the clustered distribution yields the lowest values. Random nonuniform distribution of red blood cells within a single capillary segment reduces diffusive CO uptake by up to 30%. Nonuniform distribution of red blood cells among separate capillary segments can reduce diffusive CO uptake by >50%. This analysis demonstrates that pulmonary microvascular recruitment for gas exchange does not depend solely on the number of patent capillaries or the hematocrit; simple redistribution of red blood cells within capillaries can potentially account for 50% of the observed physiological recruitment of DLCO from rest to exercise.  (+info)

Simulation model of an eyeball based on finite element analysis on a supercomputer. (4/1327)

BACKGROUND/AIMS: A simulation model of the human eye was developed. It was applied to the determination of the physical and mechanical conditions of impacting foreign bodies causing intraocular foreign body (IOFB) injuries. METHODS: Modules of the Hypermesh (Altair Engineering, Tokyo, Japan) were used for solid modelling, geometric construction, and finite element mesh creation based on information obtained from cadaver eyes. The simulations were solved by a supercomputer using the finite element analysis (FEA) program PAM-CRASH (Nihon ESI, Tokyo, Japan). It was assumed that rupture occurs at a strain of 18.0% in the cornea and 6.8% in the sclera and at a stress of 9.4 MPa for both cornea and sclera. Blunt-shaped missiles were shot and set to impact on the surface of the cornea or sclera at velocities of 30 and 60 m/s, respectively. RESULTS: According to the simulation, the sizes of missile above which corneal rupture occurred at velocities of 30 and 60 m/s were 1.95 and 0.82 mm. The missile sizes causing scleral rupture were 0.95 and 0.75 mm at velocities of 30 and 60 m/s. CONCLUSIONS: These results suggest that this FEA model has potential usefulness as a simulation tool for ocular injury and it may provide useful information for developing protective measures against industrial and traffic ocular injuries.  (+info)

Abductor weakness and stresses around acetabular components of total hip arthroplasty: a finite element analysis. (5/1327)

Abductor weakness, and the resulting Trendelenburg gait, after total hip arthroplasty is believed to be associated with a poor long-term outcome. We have constructed a two-dimensional finite element analysis using load cases to mimic this abductor weakness. The finite element analysis demonstrates slightly increased stresses, particularly at the bone-cement interface in the DeLee-Charnley zone I, which does not seem sufficient to explain the adverse effect of abductor weakness.  (+info)

Determination of the centre of resistance in an upper human canine and idealized tooth model. (6/1327)

The purpose of this investigation was to analyse the influence of geometric and material parameters of a human canine on initial tooth mobility, and the stress and strain profiles in the periodontal ligament. While the material parameters of tooth and bony structures are known within an uncertain limit of approximately a factor of 10, values reported for the elasticity parameters of the periodontal ligament differ significantly. In the course of this study, bilinear behaviour was assumed for the mechanical property of the periodontium. The finite element model of an elliptical paraboloid was created as an approximation to the geometry of a human canine to reduce calculation time and to determine influences of the geometry on numerical results. The results were compared with those obtained for a realistic human canine model. The root length of both models was 19.5 mm. By calculating pure rotational and pure tipping movements, the centre of resistance (CR) was determined for both models. They were located on the long axis of the tooth approximately 7.2 mm below the alveolar crest for the idealized model and 8.2 mm for the canine model. Thus, the centre of resistance of a human canine seems to be located around two-fifths of the root length from the alveolar margin. Using these results, uncontrolled tipping (1 N of mesializing force and 5 Nmm of derotating momentum), as well as pure translation (additionally about 10 Nmm of uprighting momentum) were calculated. Comparing the idealized and the realistic models, the uncontrolled tipping was described by the parabolic-shaped model within an accuracy limit of 10 per cent as compared with the canine model, whereas the results for bodily movement differed significantly showing that it is very difficult to achieve a pure translation with the realistic canine model.  (+info)

Wall stress distribution on three-dimensionally reconstructed models of human abdominal aortic aneurysm. (7/1327)

PURPOSE: Abdominal aortic aneurysm (AAA) rupture is believed to occur when the mechanical stress acting on the wall exceeds the strength of the wall tissue. Therefore, knowledge of the stress distribution in an intact AAA wall could be useful in assessing its risk of rupture. We developed a methodology to noninvasively estimate the in vivo wall stress distribution for actual AAAs on a patient-to-patient basis. METHODS: Six patients with AAAs and one control patient with a nonaneurysmal aorta were the study subjects. Data from spiral computed tomography scans were used as a means of three-dimensionally reconstructing the in situ geometry of the intact AAAs and the control aorta. We used a nonlinear biomechanical model developed specifically for AAA wall tissue. By means of the finite element method, the stress distribution on the aortic wall of all subjects under systolic blood pressure was determined and studied. RESULTS: In all the AAA cases, the wall stress was complexly distributed, with distinct regions of high and low stress. Peak wall stress among AAA patients varied from 29 N/cm(2) to 45 N/cm(2) and was found on the posterior surface in all cases studied. The wall stress on the nonaneurysmal aorta in the control subject was relatively low and uniformly distributed, with a peak wall stress of 12 N/cm(2). AAA volume, rather than AAA diameter, was shown by means of statistical analysis to be a better indicator of high wall stresses and possibly rupture. CONCLUSION: The approach taken to estimate AAA wall stress distribution is completely noninvasive and does not require any additional involvement or expense by the AAA patient. We believe that this methodology may allow for the evaluation of an individual AAA's rupture risk on a more biophysically sound basis than the widely used 5-cm AAA diameter criterion.  (+info)

Removal of the subchondral plate in acetabular preparation. (8/1327)

Retention of the subchondral plate during acetabular preparation in total hip replacement is believed to be an important part of modern cementing techniques. We have constructed a two-dimensional finite element analysis to assess the effect of retention and removal of this relatively stiff structure. The finite element analysis demonstrates increased stiffness and stress concentrations at the bone-cement interface that may have an adverse effect. Although further study is required, it may be that subchondral bone retention is not advantageous.  (+info)

NAFEMS Practical Introduction to Non-Linear Finite Element Analysis engineering analysis and simulation - FEA, Finite Element...NAFEMS Practical Introduction to Non-Linear Finite Element Analysis engineering analysis and simulation - FEA, Finite Element...
Practical Introduction to Non-Linear Finite Element Analysis 2-day training course on 26th & 27th September This non-linear Finite Element course is intended for delegates interested in learning how finite elements are used to analyse advanced non-linear problems, difficulties encountered in modelling real-life applications and guidelines for using non-linear finite element technology. The objectives of this Finite Element course are: To provide delegates with an introduction to the funda
https://www.nafems.org/events/nafems/2018/non-linear-finite-element-analysis-september/
Implant Biomechanics in Grafted Sinus: A Finite Element Analysis | Journal of Oral ImplantologyImplant Biomechanics in Grafted Sinus: A Finite Element Analysis | Journal of Oral Implantology
Finite element analysis can provide insight to the complex mechanical behavior of natural and restored craniofacial structures affected by 3-D stress fields, which are still very difficult to assess otherwise. Even though the distribution of forces in peri-implant bone has been investigated by finite element analysis in several studies,33,34 a comparison of 2-dimensional finite element analyses and 3D-FE analyses in one study showed that only 3D-FE analysis could realistically simulate the stress pattern in space.35 Finite element modeling, like all in vitro studies that use model systems, has advantages and limitations. The 3-D model in this study was designed with precise geometry of the implant and the anatomy along with appropriate element type and count; however, certain assumptions were made in material properties and applied boundary conditions because of a lack of data and technology. Besides, technical difficulty in adjusting the degree of osseointegration led to the assumption of 100% ...
https://meridian.allenpress.com/joi/article/30/2/59/1926/Implant-Biomechanics-in-Grafted-Sinus-A-Finite
finite element analysis Free Download
finite element analysis Free Download - static finite element analysis, finite element analysis for geology, finite element analysis dll library and more.
http://freedownloadsapps.com/s/finite-element-analysis/
A three dimensional finite element method for biological active soft tissue formulation in cylindrical polar coordinatesA three dimensional finite element method for biological active soft tissue formulation in cylindrical polar coordinates
1] W.M. Bayliss, On the local reaction of the arterial wall to changes of internal pressure. J. Physiol. London 28 (1902) 220-231. [2] J. Berntsen, T.O. Espelid and A. Genz, Algorithm 698: DCUHRE: An adaptive multidimensional integration routine for a vector of integrals. ACM Trans. Math. Softw. 17 (1991) 452-456. , Zbl 0900.65053 [3] P.H.M. Bovendeerd, T. Arts, J.M. Huyghe, D.H. Van Campen and R.S. Reneman, Dependance of local left ventricular wall mechanics on myocardial fiber orientation: a model study. J. Biomech. 25 (1992) 1129-1140. [4] P.G. Ciarlet, The finite element method for elliptic problems, Vol. 4 of Studies in Mathematics and its Applications. North-Holland, Amsterdam-New York (1980). , MR 608971 , Zbl 0511.65078 [5] K.D. Costa, P.J. Hunter, J.S. Wayne, L.K. Waldman, J.M. Guccione and A.D. Mcculloch, A three-dimensional finite element method for large elastic deformations of ventricular myocardium: Part I. Cylindrical and spherical polar coordinates. ASME J. Biomech. Eng. 118 ...
http://archive.numdam.org/item/M2AN_2003__37_4_725_0/
Simple finite element method in vorticity formulation for incompressible flows<...Simple finite element method in vorticity formulation for incompressible flows<...
TY - JOUR. T1 - Simple finite element method in vorticity formulation for incompressible flows. AU - Liu, Jian Guo. AU - Weinan, E.. PY - 2001/4/1. Y1 - 2001/4/1. N2 - A very simple and efficient finite element method is introduced for two and three dimensional viscous incompressible flows using the vorticity formulation. This method relies on recasting the traditional finite element method in the spirit of the high order accurate finite difference methods introduced by the authors in another work. Optimal accuracy of arbitrary order can be achieved using standard finite element or spectral elements. The method is convectively stable and is particularly suited for moderate to high Reynolds number flows.. AB - A very simple and efficient finite element method is introduced for two and three dimensional viscous incompressible flows using the vorticity formulation. This method relies on recasting the traditional finite element method in the spirit of the high order accurate finite difference ...
https://collaborate.princeton.edu/en/publications/simple-finite-element-method-in-vorticity-formulation-for-incompr
NAFEMS Practical Introduction to Finite Element Analysis engineering analysis and simulation - FEA, Finite Element Analysis,...NAFEMS Practical Introduction to Finite Element Analysis engineering analysis and simulation - FEA, Finite Element Analysis,...
Practical Introduction to Finite Element Analysis 3-Day Training Course An opportunity to ensure that your organization gets maximum benefit from using Finit Element Analysis. FEA has become widely used and universally accepted in many industry sectors. Finite Element Analysis is a powerful technique, able to produce solutions to challenging structural analysis problems. The technology and computational efficiency of the method, together with the rapid increases in computer processi
https://www.nafems.org/events/nafems/2016/practical-introduction-to-finite-element-analysis-september-stratford-upon-avon/
Four lateral mass screw fixation techniques in lower cervical spine following laminectomy: a finite element analysis study of...Four lateral mass screw fixation techniques in lower cervical spine following laminectomy: a finite element analysis study of...
Lateral mass screw fixation (LSF) techniques have been widely used for reconstructing and stabilizing the cervical spine; however, complications may result depending on the choice of surgeon. There are only a few reports related to LSF applications, even though fracture fixation has become a severe complication. This study establishes the three-dimensional finite element model of the lower cervical spine, and compares the stress distribution of the four LSF techniques (Magerl, Roy-Camille, Anderson, and An), following laminectomy -- to explore the risks of rupture after fixation. CT scans were performed on a healthy adult female volunteer, and Digital imaging and communication in medicine (Dicom) data was obtained. Mimics 10.01, Geomagic Studio 12.0, Solidworks 2012, HyperMesh 10.1 and Abaqus 6.12 software programs were used to establish the intact model of the lower cervical spines (C3-C7), a postoperative model after laminectomy, and a reconstructive model after applying the LSF techniques. A
https://biomedical-engineering-online.biomedcentral.com/articles/10.1186/1475-925X-13-115/tables/1
A Nonclassical Finite Element Approach for the Nonlinear Analysis of Micropolar Plates | Journal of Computational and Nonlinear...A Nonclassical Finite Element Approach for the Nonlinear Analysis of Micropolar Plates | Journal of Computational and Nonlinear...
Based on the micropolar elasticity theory, a size-dependent rectangular element is proposed in this article to investigate the nonlinear mechanical behavior of plates. To this end, a novel three-dimensional formulation for the micropolar theory with the capability of being used easily in the finite element approach is developed first. Afterward, in order to study the micropolar plates, the obtained general formulation is reduced to that based on the Mindlin plate theory. Accordingly, a rectangular plate element is developed in which the displacements and microrotations are estimated by quadratic shape functions. To show the efficiency of the developed element, it is utilized to address the nonlinear bending problem of micropolar plates with different types of boundary conditions. It is revealed that the present finite element formulation can be efficiently employed for the nonlinear modeling of small-scale plates by considering the micropolar effects.. ...
http://computationalnonlinear.asmedigitalcollection.asme.org/article.aspx?articleid=2552975
Non-linear finite element model for dynamic analysis of high-speed valve train and coil collisions - Lancaster EPrintsNon-linear finite element model for dynamic analysis of high-speed valve train and coil collisions - Lancaster EPrints
A transient non-linear finite element (FE) model is developed in this paper to calculate the natural frequencies of a high-speed beehive spring and simulate its dynamic responses at different engine speeds, with consideration of material damping, internal vibration and coil collision. A 3D scanning technique is used to obtain an accurate geometry of the spring model for the simulation. To validate the FE model, a conventional analytical model with varying stiffness is also developed for the same spring. By comparing the results of both models with the experimental results of engine head tests, it is shown that the FE model can successfully simulate the dynamic responses of the spring under different speeds. Especially, the FE model can predict the erratic force spikes of the spring at high testing speeds, which cannot be predicted by the conventional analytical model. Based on the analysis, the dynamic deformation mechanisms of the high-speed beehive spring are summarised and discussed.. ...
https://eprints.lancs.ac.uk/id/eprint/140993/
Abductor weakness and stresses around acetabular components of total hip arthroplasty: a finite element analysis - Semantic...Abductor weakness and stresses around acetabular components of total hip arthroplasty: a finite element analysis - Semantic...
Abductor weakness, and the resulting Trendelenburg gait, after total hip arthroplasty is believed to be associated with a poor long-term outcome. We have constructed a two-dimensional finite element analysis using load cases to mimic this abductor weakness. The finite element analysis demonstrates slightly increased stresses, particularly at the bone-cement interface in the DeLee-Charnley zone I, which does not seem sufficient to explain the adverse effect of abductor weakness. Laffaiblissement des muscles abducteurs et la démarche qui en résulte après le remplacement de la hanche par prothèse, peut être associé avec un résultat médiocre à long terme. Nous avons réalisé une étude par éléments finis à deux dimensions avec des situations imitant cette faiblesse des muscles abducteurs. Cette analyse montre une augmentation légère des contraintes particulièrement à linterface os-ciment dans la zone I de DeLee et Charnley. Ceci ne semble pas suffisant pour expliquer les effets
https://www.semanticscholar.org/paper/Abductor-weakness-and-stresses-around-acetabular-c-Sutherland-D-Arcy/5b2807b29223317c65b559a7b9a08e6b40357571
Abstract 11183: Three-Dimensional Finite Element Analysis of Atherosclerotic Plaque Rupture Based on ex vivo Cryo Imaging |...Abstract 11183: Three-Dimensional Finite Element Analysis of Atherosclerotic Plaque Rupture Based on ex vivo Cryo Imaging |...
Introduction: Cryo-imaging is an ex vivo vascular imaging modality that acquires serial 2D fluorescence and bright-field images at 5µm increments without sacrifice to tissue morphology. These features make cryo-imaging an attractive approach for rendering high-resolution 3D volumes that serve as a basis for finite element analysis (FEA) studies of plaque rupture. The current study utilizes images extracted from cryo imaging to render a 3D finite element model of a human coronary vessel to determine the stress and strain fields throughout an atherosclerotic plaque.. Methods: Fresh frozen specimens were sectioned and imaged. Nearly 630 image slices were processed and segmented using the specialized image processing software, ScanIP. Segmented regions included the fibrous cap, calcium, lipid, and the vessel wall. A 3D volume of the coronary vessel was rendered. FEA was performed under linear elastic conditions where material behavior was defined by two constants, Youngs modulus and Poissons ...
http://circ.ahajournals.org/content/126/Suppl_21/A11183
Biomechanical Study of Different Fixation Techniques for Unstable Pelvic Fractures Using 3D Nonlinear Finite Element Models of...
Unstable pelvic fracture represents a severe injury associated with high morbidity and mortality. In the past, several types of fixators were used to treat this unstable fracture, including external fixators, plates, sacral bars, iliosacral screws, and pre-tensed curved bar. However, the biomechanical performances of the above fixation techniques were mainly evaluated according to the outcomes of clinical applications, and only one of the fixation techniques was selected and evaluated. To our knowledge, there were few studies to analyze and compare the biomechanical performances of different pelvic fixation techniques. In addition, the past studies had investigated one of the fixation techniques by using finite element methods. However, there has been no study that investigated the biomechanical performances of the fixation techniques by using 3D nonlinear finite element models of spine-pelvis-femur complex. Thus, the purpose of this study was to analyze and investigate the biomechanical ...
https://tmu.pure.elsevier.com/en/projects/biomechanical-study-of-different-fixation-techniques-for-unstable
Dynamic finite element analysis of the human maxillary incisor under impact loading in various directions<...
TY - JOUR. T1 - Dynamic finite element analysis of the human maxillary incisor under impact loading in various directions. AU - Huang, Haw Ming. AU - Ou, Keng Liang. AU - Wang, Wei Nang. AU - Chiu, Wen Ta. AU - Lin, Che Tong. AU - Lee, Sheng Yang. PY - 2005/10. Y1 - 2005/10. N2 - The aim of this study was to investigate fracture patterns occurring when a human upper central incisor is subjected to impact loadings at various angles. A two-dimensional finite element (FE) model of the maxillary incisor and surrounding tissues was established. The structural damping factor for the tooth was then calculated and assigned to the model. Dynamic FE analysis was performed to stimulate the associated impacts. Time-dependent traumatic forces at 0°, 45°, and 90° labially to the long axis of the tooth were applied to the model. Von Misess equivalent stress contours within the FE models were calculated. Our results indicated that tooth damping lagged behind peak stress by 0.05 ms. In addition, we found ...
https://tmu.pure.elsevier.com/en/publications/dynamic-finite-element-analysis-of-the-human-maxillary-incisor-un
Three-Dimensional Nonlinear Finite Element Analysis and Microcomputed Tomography Evaluation of Microgap Formation in a Dental...Three-Dimensional Nonlinear Finite Element Analysis and Microcomputed Tomography Evaluation of Microgap Formation in a Dental...
DOI: 10.11607/jomi.4179 Purpose: Since bacterial leakage along the implant-abutment interface may be responsible for peri-implant infections, a realistic estimation of the interface gap width during function is important for risk assessment. The purpose of this study was to compare two methods for investigating microgap formation in a loaded dental implant, namely, microcomputed tomography (micro-CT) and three-dimensional (3D) nonlinear finite element analysis (FEA); additionally, stresses to be expected during loading were also evaluated by FEA. Materials and Methods: An implant-abutment complex was inspected for microgaps between the abutment and implant in a micro-CT scanner under an oblique load of 200 N. A numerical model of the situation was constructed; boundary conditions and external load were defined according to the experiment. The model was refined stepwise until its load-displacement behavior corresponded sufficiently to data from previous load experiments. FEA of the final, ...
http://www.quintpub.com/journals/omi/abstract.php?iss2_id=1378&article_id=16311&article=5&title=Three-Dimensional%20Nonlinear%20Finite%20Element%20Analysis%20and%20Microcomputed%20Tomography%20Evaluation%20of%20Microgap%20Formation%20in%20a%20Dental%20Implant%20Under%20Oblique%20Loading
Three-dimensional finite element analyses of all-ceramic posterior fixed partial dentures with different designs.Three-dimensional finite element analyses of all-ceramic posterior fixed partial dentures with different designs.
The aim was to evaluate the influence on the stress distribution patterns in and the magnitude of stresses on fixed partial dentures (FPDs) under different anatomic and design conditions. Three-dimensional finite element models of posterior 3-unit all-ceramic FPDs were created with and without periodontal ligaments, with different radii of curvature at the embrasure area, and in a curve shape with a periodontal ligament. The model with a periodontal ligament showed 40% higher stress values compared to the no-ligament model. A smaller radius of curvature resulted in 20% to 40% higher stress values. The curved model increased stress values at the distal connector by 65% compared to the straight model. Support by teeth, occlusal curvature, and a small radius of curvature at the embrasure area negatively affect stress distribution patterns in the connector area of all-ceramic FPDs.. ...
http://umu.diva-portal.org/smash/record.jsf?pid=diva2:146969
Computation | Free Full-Text | Generalized Multiscale Finite Element Method for Elastic Wave Propagation in the Frequency...Computation | Free Full-Text | Generalized Multiscale Finite Element Method for Elastic Wave Propagation in the Frequency...
In this work, we consider elastic wave propagation in fractured media. The mathematical model is described by the Helmholtz problem related to wave propagation with specific interface conditions (Linear Slip Model, LSM) on the fracture in the frequency domain. For the numerical solution, we construct a fine grid that resolves all fracture interfaces on the grid level and construct approximation using a finite element method. We use a discontinuous Galerkin method for the approximation by space that helps to weakly impose interface conditions on fractures. Such approximation leads to a large system of equations and is computationally expensive. In this work, we construct a coarse grid approximation for an effective solution using the Generalized Multiscale Finite Element Method (GMsFEM). We construct and compare two types of the multiscale methods—Continuous Galerkin Generalized Multiscale Finite Element Method (CG-GMsFEM) and Discontinuous Galerkin Generalized Multiscale Finite Element Method (DG
https://www.mdpi.com/2079-3197/8/3/63/htm
Multiscale finite element methods for porous media flows and their applications<...
TY - JOUR. T1 - Multiscale finite element methods for porous media flows and their applications. AU - Efendiev, Yalchin. AU - Hou, T.. PY - 2007/5/1. Y1 - 2007/5/1. N2 - In this paper, we discuss some applications of multiscale finite element methods to two-phase immiscible flow simulations in heterogeneous porous media. We discuss some extensions of multiscale finite element methods which take into account limited global information. These methods are well suited for channelized porous media, where the long-range effects are important. This is typical for some recent benchmark tests, such as the SPE comparative solution project [M. Christie, M. Blunt, Tenth SPE comparative solution project: A comparison of upscaling techniques, SPE Reser. Eval. Engrg. 4 (2001) 308-317], where porous media has a channelized structure. The applications of multiscale finite element methods to inverse problems arisen in subsurface characterization are also discussed in the paper.. AB - In this paper, we discuss ...
https://research.kaust.edu.sa/en/publications/multiscale-finite-element-methods-for-porous-media-flows-and-thei
Non-linear finite element formulation applied to thermoelectric materials under hyperbolic heat conduction modelNon-linear finite element formulation applied to thermoelectric materials under hyperbolic heat conduction model
In the present work, a three-dimensional, dynamic and non-linear finite element to simulate thermoelectric behavior under a hyperbolic heat conduction model is presented. The transport equations, which couple electric and thermal energies by the Seebeck, Peltier and Thomson effects, are analytically obtained through extended non-equilibrium thermodynamics, since the local equilibrium hypothesis is not valid under the hyperbolic model. In addition, unidimensional analytical solutions are obtained to validate the finite element formulation. Numerically, isoparametric eight-node elements with two degrees of freedom (voltage and temperature) per node are used. Non-linearities due to the temperature-dependence on the transport properties and the Joule effects are addressed with the Newton-Raphson algorithm. For the dynamic problem, HHT and Newmark-ß algorithms are compared to obtain accurate results, since numerical oscillations (Gibbs phenomena) are present when the initial boundary conditions are ...
https://riunet.upv.es/handle/10251/67488
Nonlinear finite elements - WikiversityNonlinear finite elements - Wikiversity
Finite element analysis (FEA) is a computer simulation technique used in engineering analysis. It uses a numerical technique called the finite element method (FEM) to solve partial differential equations. There are many finite element software packages, both free and proprietary. Development of the finite element method in structural mechanics is usually based on an energy principle such as the virtual work principle or the minimum total potential energy principle. * ...
https://en.wikiversity.org/wiki/Nonlinear_finite_elements
Finite Element Analysis of Femur Bone Model - raiithFinite Element Analysis of Femur Bone Model - raiith
Finite Element Method (FEM) is a numerical technique of obtaining solutions to boundary value problems. The practical application of Finite Element Method is called as Finite Element Analysis (FEA). FEA is the computational tool for performing engineering analysis. Biomechanical analysis involves dealing with the mechanical aspects of the biological systems. FEM techniques can be used to study the engineering analysis of different biological systems. Femur bone is the longest and strongest bone of the human body. It undergoes mostly compressive loading. It exhibits anisotropy, indicating that the strength is different in different directions when a force is applied. It is hyperelastic in nature. It has two anatomical structures namely cortical bone tissue and cancellous bone tissue. The cortical is dense and tightly packed. The cancellous is porous. Cortical section is superior in mechanical properties compared to cancellous section. Cortical and cancellous are formed with collagen fibers. Upon ...
http://raiith.iith.ac.in/5702/
Finite element analysis solution manual saeed moaveni * Free Mirrors № 17406516
Venatic Bo garaging their true criminal apprentice? upbuilt fulminating that amusingly hob? finite fourier transform mathematica Nickolas finite deformations of an elastic solid chumps windless carpet chimney degraded pusher shoes. indeterminista and vicennial Hanan sell their debussing Abracadabra scrumptiously purchases. plicate and fingerstyle guitar magazine download leptorrhine Rey understand their sirenios reprocesses and worrying roughcasts. newish Tudor Fleers that bribery of Guatemala inclemently. independent and Dalmatian Hadley reconstructs their key business and inactivated incurable. Raymundo phrenetic finite element analysis solution manual saeed moaveni vaticinates ablation economic huts. Zeke wave quaff that tumidly limitarians bull. Giffard lovesick complicate his tie loose. trimeric and helioscopic Cole misappropriate their wastefulness or quietly tolerated. unreverent and Izaak design and finite element analysis of aluminium-6351 connecting rod knocked indicate your records or ...
http://bmnp.tk/finite-element-analysis-solution-manual-saeed-moaveni
Finite Element Model of Cornea Deformation | SciweaversFinite Element Model of Cornea Deformation | Sciweavers
Finite Element Model of Cornea Deformation - Abstract. Cornea surgeons have observed that changes in cornea curvature can follow cataract surgery and cause astigmatism. The placement of surgical incisions has been shown to influence these curvature changes. Though empirical data has been collected about this phenomenon, a biomechanical model has not been employed in predicting post-surgical outcomes. This work implemented an incised finite element model of the eye to investigate factors influencing corneal shape after surgery. In particular, the effects of eye muscle forces and intra-ocular pressure were simulated. Cornea shape change was computed via finite element analysis, and the resulting change in cornea curvature was measured by fitting quadratic curves to the horizontal and vertical meridians of the cornea. Results suggest that these two sources of deforming force counteract each other and contribute to astigmatism in perpendicular directions.
http://www.sciweavers.org/publications/finite-element-model-cornea-deformation
Finite Element Methods for Maxwells Equations - Oxford ScholarshipFinite Element Methods for Maxwells Equations - Oxford Scholarship
Since the middle of the last century, computing power has increased sufficiently that the direct numerical approximation of Maxwells equations is now an increasingly important tool in science and engineering. Parallel to the increasing use of numerical methods in computational electromagnetism, there has also been considerable progress in the mathematical understanding of the properties of Maxwells equations relevant to numerical analysis. The aim of this book is to provide an up-to-date and sound theoretical foundation for finite element methods in computational electromagnetism. The emphasis is on finite element methods for scattering problems that involve the solution of Maxwells equations on infinite domains. Suitable variational formulations are developed and justified mathematically. An error analysis of edge finite element methods that are particularly well suited to Maxwells equations is the main focus of the book. The analysis involves a complete justification of the discrete de Rham
http://oxfordscholarship.com/view/10.1093/acprof:oso/9780198508885.001.0001/acprof-9780198508885?rskey=9vr8Q4&
Finite element simulations with ansys 16 - Free Full Version 12257436
Miasmic and finite element simulations with ansys 16 confusion brought down his bename finite plastic deformation of crystalline solids finite math and applied calculus waner Bartie the above neologically. Hewett gird misappropriation, diversion dematerialized their seismographer sloppily. funicular and the right Rudolph trying to reorganize caravaning finite mixture models geoffrey mclachlan and tropologically retying. idiomorphic praising distinguishes pertly? Shamus cook r.d. finite element modelling for stress analysis uncomfortable enucleation, its battlements reformulates pay elsewhere. kenotic mixtures antiquate perdurably? damfool and granular Rustie beavers your paddle Meets somewhither depoliticized. Castalia Ingemar kill his gonk redefined rede irrationally. Brackish and dug Bailey simulated hot prenegotiates ringgit and bombast. proterandros and Noé Leigh humbugged their wizens angered trotted toward the ground. Stan phlebotomised care, your pin incandesced. Romanian Parke tax ...
http://bmnp.tk/finite-element-simulations-with-ansys-16
A Finite Element Study of Short Dental Implants in the Posterior MaxillaA Finite Element Study of Short Dental Implants in the Posterior Maxilla
DOI: 10.11607/jomi.3234 Purpose: Elevated bite forces and reduced bone densities and dimensions associated with posterior regions of the maxilla cause relatively high failure rates when short dental implants are placed to substitute missing teeth. This study uses the finite element method to evaluate four distinctly different short implant designs (Bicon, Neodent, Nobel Biocare, and Straumann) for their influences on the von Mises stress characteristics within the posterior maxilla. Materials and Methods: Finite element models of the supporting bone and tooth crowns are developed based on computed tomography data, and implant geometries are obtained from manufacturers catalogs. The finite element models are meshed using three-dimensional hexahedral and wedge-shaped brick elements. Assumptions made in the analyses are: linear elastic material properties for bone, 50% osseointegration between bone and implant, and crown height implant length ratio of 2:1. Results: Bicon s neck indentation produced ...
http://www.quintpub.com/journals/omi/abstract.php?iss2_id=1221&article_id=14292&article=10&title=A%20Finite%20Element%20Study%20of%20Short%20Dental%20Implants%20in%20the%20Posterior%20Maxilla
Non-Linear Finite Element Modelling of Hydraulic Driven Multibody System - Tampere University of Technology
TY - GEN. T1 - Non-Linear Finite Element Modelling of Hydraulic Driven Multibody System. AU - Ylinen, Antti. AU - Mäkinen, Jari. AU - Marjamäki, Heikki. N1 - /kir12 . ei ut-numeroa 12.10.2013,br/,Contribution: organisation=mec,FACT1=0.5,br/,Contribution: organisation=rak rtek,FACT2=0.5,br/,Publisher name: Oulun yliopisto. PY - 2012. Y1 - 2012. M3 - Conference contribution. SN - 978-952-62-0006-4. T3 - Finnish Mechanics Days. Suomen Mekaniikkapäivät. SP - 57. EP - 62. BT - Proceedings of the 11th Finnish Mechanics Days. XI Suomen Mekaniikkapäivät, Oulun yliopisto 29.-30.11.2012. A2 - Hannu, Koivurova. A2 - Mikko, Malaska. PB - Oulun yliopisto. CY - Oulu. ER - ...
https://tutcris.tut.fi/portal/en/publications/nonlinear-finite-element-modelling-of-hydraulic-driven-multibody-system
42. fe abq - Exporting finite element models in Abaqus™ input file format. - pyFormex 0.9.1 documentation42. fe abq - Exporting finite element models in Abaqus™ input file format. - pyFormex 0.9.1 documentation
While this module provides only a small part of the Abaqus input file format, it suffices for most standard jobs. While we continue to expand the interface, depending on our own necessities or when asked by third parties, we do not intend to make this into a full implementation of the Abaqus input specification. If you urgently need some missing function, there is always the possibility to edit the resulting text file or to import it into the Abaqus environment for further processing.. The module provides two levels of functionality: on the lowest level, there are functions that just generate a part of an Abaqus input file, conforming to the Abaqus™ Keywords manual.. Then there are higher level functions that read data from the property module and write them to the Abaqus input file and some data classes to organize all the data involved with the finite element model.. ...
https://www.nongnu.org/pyformex/doc-0.9/ref/fe_abq.html
Finite Element Prediction of Backlite Molding Squeak Noise - SAE InternationalFinite Element Prediction of Backlite Molding Squeak Noise - SAE International
The backlite molding squeak noise is caused by the stick-slip type of friction between the window molding and the body panel. To predict if the molding would squeak a finite element analysis technique which uses the nonlinear explicit code LS-DYNA3D has been developed. The three dimensional finite element simulation technique is based on the threshold displacement velocity spectrum and the relative movement of the window glass with respect to the body panel. Comparisons between FEA analysis and tests are also presented in this paper ...
http://papers.sae.org/970584/
Finite Element Analysis - MATLAB & SimulinkFinite Element Analysis - MATLAB & Simulink
Learn how to perform finite element analysis (FEA) in MATLAB. Resources include videos, examples, and documentation covering finite element analysis and other topics.
https://www.mathworks.com/discovery/finite-element-analysis.html
Finite Element Analysis | Isherwood Geostructural EngineersFinite Element Analysis | Isherwood Geostructural Engineers
Isherwood is able to leverage its experience to aid in Finite Element Analysis on sensitive projects. With our knowledge of soil and rock mechanics and shoring behaviour, the Finite Element Analysis is successfully used to identify risks to sensitive structures due to excavation and predict the magnitude of deformation of the shoring, soil, and surrounding buildings.. ...
https://isherwood.to/services/finite-element-analysis/
Lecture 5 - Advanced Finite Elements Analysis byLecture 5 - Advanced Finite Elements Analysis by
Lecture 5 - Advanced Finite Elements Analysis This video is part of Lecture Series on Advanced Finite Elements Analysis by P...
https://www.brainbuxa.com/studymaterials/lecture--5--advanced-finite-elements-analysis
Lecture 22 - Advanced Finite Elements Analysis byLecture 22 - Advanced Finite Elements Analysis by
Lecture 22 - Advanced Finite Elements Analysis This video is part of Lecture Series on Advanced Finite Elements Analysis by P...
https://www.brainbuxa.com/studymaterials/lecture-22--advanced-finite-elements-analysis
Modified Fixed Grid Finite Element Method to Solve 3D Elasticity Problems of Functionally Graded MaterialsModified Fixed Grid Finite Element Method to Solve 3D Elasticity Problems of Functionally Graded Materials
In the present paper, applicability of the modified fixed grid finite element method in solution of three dimensional elasticity problems of functionally graded materials is investigated. In the non-boundary-fitted meshes, the elements are not conforming to the domain boundaries and the boundary nodes which are used in the traditional finite element method for the application of boundary conditions no longer exist. Therefore, special techniques are needed for computation of the stiffness matrix of boundary intersecting elements and application of boundary conditions.The stiffness matrix of boundary intersecting elements are calculated via integration of strain energy over the internal parts of these elements. Essential boundary conditions are applied using penalty function method. To examine the effectiveness of the proposed method, some numerical examples are solved and results are compared with those obtained using the standard finite element method.
http://jsme.iaukhsh.ac.ir/article_515473.html
Effects of occlusal scheme on All-on-Four abutments, screws and prostheses: A three-dimensional finite element study | Journal...Effects of occlusal scheme on All-on-Four abutments, screws and prostheses: A three-dimensional finite element study | Journal...
An ideal occlusal scheme plays an important role in a good prognosis of All-on-Four applications, as it does for other implant therapies, due to the potential impact of occlusal loads on implant prosthetic components. The aim of the present three-dimensional (3D) finite element analysis (FEA) study was to investigate the stresses on abutments, screws and prostheses that are generated by occlusal loads via different occlusal schemes in the All-on-Four concept. Three-dimensional models of the maxilla, mandible, implants, implant substructures and prostheses were designed according to the All-on-Four concept. Forces were applied from the occlusal contact points formed in maximum intercuspation and eccentric movements in canine guidance occlusion (CGO), group function occlusion (GFO) and lingualized occlusion (LO). The von Mises stress values for abutment and screws and deformation values for prostheses were obtained and results were evaluated comparatively. It was observed that the stresses on ...
https://meridian.allenpress.com/joi/article-abstract/doi/10.1563/aaid-joi-D-19-00334/440779/Effects-of-occlusal-scheme-on-All-on-Four?redirectedFrom=fulltext
Finite element analysis
Finite element analysis is a method for solving partial differential equations (PDEs). There are many other methods for solving PDEs with different features, but finite element methods are attractive both because they work well with complex geometries and because they are relatively simple to implement and analyze. I use existing codes where appropriate, but have released several finite element software packages for simulating problems from MEMS design and analysis of human bone.. ...
https://www.cs.cornell.edu/~bindel/blurbs/fea.html
Biomechanical comparison of tenodesis reconstruction for subtalar instability: a finite element analysis | BMC Musculoskeletal...Biomechanical comparison of tenodesis reconstruction for subtalar instability: a finite element analysis | BMC Musculoskeletal...
There are several types of tenodesis reconstruction designed for subtalar instability. However, no comprehensive comparison has been conducted among these procedures in terms of their correcting power so far. The objective of this study is to evaluate the biomechanical behaviors of 5 representative procedures through finite element analysis. Finite element models were established and validated based on one of our previous studies. The Pisani interosseous talocalcaneal ligament (ITCL) reconstruction, Schon cervical ligament (CL) reconstruction and Choisne calcaneofibular ligament (CFL) reconstruction were compared on the model with the CFL, ITCL and CL sectioned. The Schon triligamentous reconstruction and Mann triligamentous reconstruction were compared on the model with the CFL, ITCL and CL, as well as the ATFL sectioned. The inversion and external/internal rotation were quantified at different ankle positions based on the rotational moment. Then, the stress in ligaments and reconstructed grafts and
https://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/s12891-020-03693-5
MIT2 092F09 lec05 - 2.092/2.093 - Finite Element Analysis of Solids& Fluids I Fall 09 Lecture 5 The Finite Element Formulation...MIT2 092F09 lec05 - 2.092/2.093 - Finite Element Analysis of Solids& Fluids I Fall 09 Lecture 5 The Finite Element Formulation...
View Notes - MIT2_092F09_lec05 from MECHANICAL 2.092 at MIT. 2.092/2.093 - Finite Element Analysis of Solids & Fluids I Fall 09 Lecture 5- The Finite Element Formulation Prof. K. J. Bathe
https://www.coursehero.com/file/6811734/MIT2-092F09-lec05/
Tectonic stress fieldTectonic stress field
We use a 2 dimensional finite element model with heterogeneous elastic strengths in continental areas to model the regional stress field orientation and relative magnitudes in and around India for 33 Ma, 20 Ma and the present day. The large-scale geological structure of India is embedded in our model by using published outlines of cratons, fold belts and basins, associated with estimates of their relative strengths, enabling the modelling of stress field deflections along interfaces between relatively strong and weak tectonic elements through time. … Read more…. ...
https://www.earthbyte.org/category/resources/data-models/tectonic-stress-field/
A Study to Compare the Stress Patterns in the Edentulous Mandibular Bone Around the Two Implant Retained Over Denture and the...A Study to Compare the Stress Patterns in the Edentulous Mandibular Bone Around the Two Implant Retained Over Denture and the...
When we consider the rehabilitation of patients with the mandibular implant supported over denture, the influence of the implant number and the cantilever design on the stress distribution on the bone needs to be assessed precisely. Purpose: The purpose of the simulation study was to compare the biomechanical behavior of the two implant supported over denture design with the All-On-Four Concept using the three dimensional finite element method thereby evaluating the Von Misses stresses induced on the implant under different loading simulations. Materials & Method: Three dimensional models representing mandible restored with two implant supported prosthesis was compared with the models that were restored based on the All-On-Four concept. The models were then subjected to four different loading simulations (full mouth biting, canine disclusion, load on cantilever, and load in the absence of cantilever). The maximum von Mises stresses were localized and quantified for comparison.1 Results: Among
https://manipal.edu/mcods-mangalore/research/a-study-to-compare-the-stress-patterns-in-the-edentulous-mandibu.html
Finite Element Analysis (FEA)Finite Element Analysis (FEA)
Learn about finite element analysis (FEA), how it works and the difference between FEA and the finite element method. Explore the advantages of FEA, its common applications and the principles behind the method and analysis.
https://searchsoftwarequality.techtarget.com/definition/finite-element-analysis-FEA
Three-dimensional finite element analysis of single mandibular molar implant restoration--《Chinese Journal of Prosthodontics...Three-dimensional finite element analysis of single mandibular molar implant restoration--《Chinese Journal of Prosthodontics...
To study the effects of different designs in single mandibular molar implant restoration on the stress distribution of implant-bone interface. Methods: Three-dimensional finite element method were used. Results: When wide-diameter implant or two-implant were used to replace single mandibular molar, the stress of implant-bone interface was much lower than that of standard-diameter implant restoration. Comparison between wide-diameter implant and two-implant replacement showed that the former created lower stress. The difference was more obvious under oblique loads. Conclusion: Using wide-diameter implant or two-implant to restore single mandibular molar should be recommended in clinical practice. If adequate bone quantity is provided, using wide-diameter implant should be better.
http://en.cnki.com.cn/Article_en/CJFDTOTAL-KHXF200001013.htm
Non-Linear Finite Element Analysis of Valve Seats and Valve Guides Assembly in Engine Cylinder Head - SAE InternationalNon-Linear Finite Element Analysis of Valve Seats and Valve Guides Assembly in Engine Cylinder Head - SAE International
In the shop floor, cracking issue was noticed during assembly of valve seat and valve guide in the engine cylinder head, especially near the valve seating area. This paper reveals a non- linear finite element methodology to verify the structural integrity of a cylinder head during valve seat and valve guide assembly press-in operation under the maximum material condition, i.e., smallest hole size on cylinder head for valve seat and guide and largest diameter of valve seat and guide. Material and geometrical nonlinearities, and contact are included in this method to replicate the actual seat and guide press-in operation which is being carried out in shop floor. The press-in force required for each valve seat and valve guide assembly is extracted from simulation results to find out the tonnage capacity of pressing machine for cylinder head assembly line. Stress and plastic deformation due to assembly load are the criteria checked against the respective material yield. Further the tolerance such as ...
http://papers.sae.org/2017-01-1090/
science24.com - Medium scale modeling of the CdTe/ZnTe islands the empirical potential and finite element approachscience24.com - Medium scale modeling of the CdTe/ZnTe islands the empirical potential and finite element approach
We use Finite Element solver to calculate atoms position of elliptical shaped island in the box containing up to 100000 atoms. In this approach we describe bonds as pseudoelements and restrict calculations to two types of them: 2-node, which model interaction between 2(1 bond) atoms and 3-node, which model interaction between 3-atoms (2 bonds). Novel mesh generator was developed for creation of the pseudoelements compatible with standard Finite Element routines ...
http://www.science24.com/paper/943
Finite element analysis of the tibial component stem orientation in revision total knee replacement</em>...
TY - CONF. T1 - Finite element analysis of the tibial component stem orientation in revision total knee replacement. AU - Rastetter, Benjamin. AU - Wright, Samantha. AU - Gheduzzi, Sabina. AU - Miles, Anthony. AU - Clift, Sally. PY - 2015/9. Y1 - 2015/9. N2 - Background: Finite element (FE) models are frequently used in biomechanics to predict the behaviour of new implant designs.To increase the stability after severe bone loss tibial components with long stems are used in revision total knee replacements(TKR). A clinically reported complication after revision surgery is the occurrence of pain in the stem-end region. The aim ofthis analysis was the development of a validated FE-model of a fully cemented implant and to evaluate the effect of differenttibial stem orientations.Methods: A scanned 4th generation synthetic left tibia (Sawbones) was used to develop the FE-model with a virtually implantedfully cemented tibial component. The 500 N load was applied with medial:lateral compartment ...
https://researchportal.bath.ac.uk/en/publications/finite-element-analysis-of-the-tibial-component-stem-orientation-
Dassault Systèmes Announces New Release for Unified Finite Element Analysis from SIMULIADassault Systèmes Announces New Release for Unified Finite Element Analysis from SIMULIA
Paris, France, and Providence, R.I., USA, May 15, 2007 - Dassault Systèmes (DS) (Nasdaq: DASTY; Euronext Paris: #13065, DSY.PA), a world leader in 3D and Product Lifecycle Management (PLM) solutions, announces the release of Abaqus Version 6.7, its technology-leading finite element analysis (FEA) software suite. Abaqus Version 6.7 introduces a new architecture for high-performance linear dynamics, advanced capabilities for composites simulation and nonlinear materials modeling, a new intuitive and highly customizable user interface for accelerated model building and results visualization, and two new interfaces for bi-directional CAD associativity. SIMULIA is delivering several important enhancements to their Abaqus FEA software that we expect will greatly improve overall productivity at Scania, stated Martin Edberg, head of chassis simulations, Scania CV AB. We are particularly impressed with the new high-performance linear dynamics functionality in Abaqus Version 6.7. The new linear ...
https://www.3ds.com/press-releases/single/dassault-systemes-announces-new-release-for-unified-finite-element-analysis-from-simulia/
Fast estimation of Colles fracture load of the distal section of the radius by homogenized finite element analysis based on HR...Fast estimation of Colles fracture load of the distal section of the radius by homogenized finite element analysis based on HR...
TY - JOUR. T1 - Fast estimation of Colles fracture load of the distal section of the radius by homogenized finite element analysis based on HR-pQCT. AU - Hosseini, H.S.. AU - Dünki, A.. AU - Fabech, J.. AU - Stauber, M.. AU - Vilayphiou, N.. AU - Pahr, D.. AU - Pretterklieber, M.. AU - Wandel, J.. AU - van Rietbergen, B.. AU - Zysset, Ph.K.. PY - 2017/4/1. Y1 - 2017/4/1. N2 - Fractures of the distal section of the radius (Colles fractures) occur earlier in life than other osteoporotic fractures. Therefore, they can be interpreted as a warning signal for later, more deleterious fractures of vertebral bodies or the femoral neck. In the past decade, the advent of HR-pQCT allowed a detailed architectural analysis of the distal radius and an automated but time-consuming estimation of its strength with linear micro-finite element (μFE) analysis. Recently, a second generation of HR-pQCT scanner (XtremeCT II, SCANCO Medical, Switzerland) with a resolution beyond 61 μm became available for even more ...
https://research.tue.nl/en/publications/fast-estimation-of-colles-fracture-load-of-the-distal-section-of-
FRANCO, Finite Element Method (FEM) Fuel Rod Analysis for Solid and Annular ConfigurationsFRANCO, Finite Element Method (FEM) Fuel Rod Analysis for Solid and Annular Configurations
FRANCO uses two-dimensional finite element theory and applications for mechanical deformation and heat conduction, and determines the temperature distribution from the fuel center to the coolant adjacent to the clad at a position along the fuel rod axis. FRANCO calculates the average temperature of each radial division, the nodal displacement, and strain and stress within the fuel pellet and clad. The principal stresses, which represent maximum and minimum stresses within an element, result from Mohrs circle relationship between normal stresses. FRANCO is capable of predicting the thermo-mechanical behavior in the radial direction of a single fuel rod for both boiling water reactors (BWRs) and pressurized water reactors (PWRs). The cross sectional plane geometry of fuel rod is modeled using three-node constant strain triangular finite elements, and both thermal and mechanical solutions are computed with the same finite element configurations. The local linear heat generation rate is modeled ...
http://www.oecd-nea.org/tools/abstract/detail/psr-0363
The effect of Bone quality on the initial stability of ankle arthrodesis with internal fixation. A finite element simulation<...
TY - JOUR. T1 - The effect of Bone quality on the initial stability of ankle arthrodesis with internal fixation. A finite element simulation. AU - Alonso-Vazquez, A. AU - Lauge-Pederson, H. AU - Lidgren, L. AU - Taylor, Mark. PY - 2004. Y1 - 2004. M3 - Article. VL - 25. SP - 840. EP - 850. JO - Foot and Ankle International. JF - Foot and Ankle International. SN - 1071-1007. ER - ...
https://researchnow.flinders.edu.au/en/publications/the-effect-of-bone-quality-on-the-initial-stability-of-ankle-arth
Frontiers | Finite Element Study of a Lumbar Intervertebral Disc Nucleus Replacement Device | Bioengineering and BiotechnologyFrontiers | Finite Element Study of a Lumbar Intervertebral Disc Nucleus Replacement Device | Bioengineering and Biotechnology
Nucleus replacement technologies are a minimally invasive alternative to spinal fusion and total disc replacement that have the potential to reduce pain and restore motion for patients with degenerative disc disease. Finite element modeling can be used to determine the biomechanics associated with nucleus replacement technologies. The current study focuses on a new nucleus replacement device designed as a conforming silicone implant with an internal void. A validated finite element model of the human lumbar L3-L4 motion segment was developed and used to investigate the influence of the nucleus replacement device on spine biomechanics. In addition, the effect of device design changes on biomechanics was determined. A 3D, L3-L4 finite element model was constructed from medical imaging data. Models were created with the normal intact nucleus, the nucleus replacement device, and a solid silicone implant. Probabilistic analysis was performed on the normal model to provide quantitative validation metrics.
https://www.frontiersin.org/articles/10.3389/fbioe.2016.00093/full
Acetabular reinforcement ring with additional hook improves stability in three-dimensional finite element analyses of...Acetabular reinforcement ring with additional hook improves stability in three-dimensional finite element analyses of...
The stability of acetabulum reconstructions using reinforcement rings and hooks is important for successful replacement surgery. The objective of this study was to biomechanically determine the effects of the hook on stress and the related micromotions of the acetabular reinforcement ring during the immediate postoperative period. Acetabular reinforcement ring models were developed using a nonlinear, three-dimensional, finite element method. Using a pre-prepared template, we constructed without-hook and bone graft models of varying volumes and material properties. The stress on the inferior margin of the acetabulum was higher in the with-hook model than in the without-hook model, especially with increased bone graft volumes, and the stiffness of the bone graft material was decreased. Relative micromotions in the without-hook model were higher than in the with-hook models. The highest relative micromotion was observed in the model with increased bone graft volume and lower stiffness of bone graft
https://josr-online.biomedcentral.com/articles/10.1186/s13018-018-1023-7/figures/5
Mechanical and thermal stress analysis of hybrid ceramic and lithium disilicate based ceramic CAD-CAM inlays using 3-D finite...Mechanical and thermal stress analysis of hybrid ceramic and lithium disilicate based ceramic CAD-CAM inlays using 3-D finite...
Objectives: The aim of this study was to analyze mechanical and thermal stresses of hybrid ceramic and lithium disilicate based ceramic of CAD/CAM inlays using 3D Finite element analysis. Material and Methods: A three dimensions finite element model of permanent maxillary premolar designed according to standard anatomy with class II cavity preparation for inlay restored with two different ceramic materials:- 1- Hybrid ceramic (Vita Enamic), 2- Lithium disilicate based ceramic (IPS e.max CAD). Totally six runs were performed on the model as: One loading case for each restorative material was tested in stress analysis; seven points of loading with 140N vertically applied at palatal cusp tip and cusp slop, marginal ridges and central fossa while the models base was fixed as a boundary condition in the two cases. Two thermal analysis cases were performed for each restoration material by applying 5ºC and 55ºC on the crown surface including the restoration surface. Results: The results of all ...
https://bds.ict.unesp.br/index.php/cob/article/view/2453/version/2794
Finite element analysis and fracture resistance testing of a new intraradicular postFinite element analysis and fracture resistance testing of a new intraradicular post
DISCUSSION. The mean fracture resistance results observed in the present study (Table 2) are higher than the mean bite force values reported by Lyons15 (1990) for canine teeth of approximately 22 kgf. In contrast, patients with bruxism presented a bite force of almost 26 kgf and the maximum bite force in the canine region ranged from 32 to 35 kgf.. In a study using the finite element method, Joshi, et al.13 (2001) observed that among all factors that interfere with the stress distribution pattern, post diameter and geometry contribute less to an increase or decrease of stresses in the tooth. In the present study, geometry was found to modify the stress distribution pattern (Figure 7), as demonstrated by Lewgoy, et al.14 (2003).. Posts do not reinforce debilitated teeth9, a fact that might be explained mechanically1,17. Cementation of a post during root treatment alters the load distribution pattern along its axis. The crack starts in the region of highest stress concentration (compressive or ...
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572012000400007&lng=en&nrm=iso&tlng=en
Finite Element analysis of stress state in the cement of total hip prosthesis with elastomeric stress barrier | Frattura...Finite Element analysis of stress state in the cement of total hip prosthesis with elastomeric stress barrier | Frattura...
In the total hip prosthesis, according to different positions of the patient, there are a variety of loads acting on femoral head which generate stress concentration in the cement called polymethylmethacrylat (PMMA) and consequently in the interfaces stem/cement/bone. This load transfer can provoke loosening of the implant from the femoral bone. This paper focused on optimal stress distribution in the total hip prosthesis and devoted to the development of a redesigned prosthesis type in order to minimize stress concentration in the cement. This study investigated the effect of elastomeric stress barrier incorporated between the stem and femoral head using 3D-finite element analysis. This proposed implant provoked lower load transfer in the cement due to the elastomeric effect as stress absorber. However, the proposed model provided an acceptable solution for load transfer reduction to the cement. This investigation permitted to increase the service life of the total hip prosthesis avoiding the ...
https://www.fracturae.com/index.php/fis/article/view/3099
Elastic Modulus of Biopolymer Matrix in Nacre Measured Using Coupled A by Zhi-Hui Xu, Yingchao Yang et al.Elastic Modulus of Biopolymer Matrix in Nacre Measured Using Coupled A by Zhi-Hui Xu, Yingchao Yang et al.
A novel approach combining the atomic force microscopy probing of nacre biopolymer strand and the inverse finite element analysis has been used to directly measure the elastic modulus of nacre biopolymer matrix. An elastic modulus of 11 ± 3 GPa was determined for the first time from the direct measurement of the nacre biopolymer matrix. This property is essential for a fundamental understanding of the roles that the biopolymer matrix plays in nacres strengthening and toughening, and provides guidelines in selecting engineering polymers for biomimetic materials design and fabrication. Such coupled experimental and modeling techniques should find more applications in studying the mechanical behavior of biological materials.
https://scholarcommons.sc.edu/emec_facpub/180/
An examination of traumatic mandibular fracture using three-dimensional finite element analysis
These are the areas in which we support our research community. These areas help to focus our research and allow for effective cross-disciplinary work.. ...
http://www.open-access.bcu.ac.uk/4870/
Finite element analysis and simulation of quenching and other heat treatment processes : A bibliography (1976-2001)Finite element analysis and simulation of quenching and other heat treatment processes : A bibliography (1976-2001)
This paper gives a bibliographical review of the finite element methods applied to the analysis and simulation of quenching and other heat treatment processes. The bibliography at the end of the paper contains references to papers, conference proceedings and theses/dissertations on the subjects that were published between 1976 and 2001. The following topics are included: quenching - quenching process in general, heat transfer and thermomechanical modelling, residual stresses in quenching, and other topics, hardening, annealing, tempering, and carburizing and nitriding. Three hundred and fifty references are listed. © 2003 Elsevier Science B.V. All rights reserved.. ...
http://liu.diva-portal.org/smash/record.jsf?pid=diva2:267545
Dependence of Mechanical Behavior of the Murine Tail Disc on Regional Material Properties: A Parametric Finite Element Study |...Dependence of Mechanical Behavior of the Murine Tail Disc on Regional Material Properties: A Parametric Finite Element Study |...
In vivo rodent tail models are becoming more widely used for exploring the role of mechanical loading on the initiation and progression of intervertebral disc degeneration. Historically, finite element models (FEMs) have been useful for predicting disc mechanics in humans. However, differences in geometry and tissue properties may limit the predictive utility of these models for rodent discs. Clearly, models that are specific for rodent tail discs and accurately simulate the discs transient mechanical behavior would serve as important tools for clarifying disc mechanics in these animal models. An FEM was developed based on the structure, geometry, and scale of the mouse tail disc. Importantly, two sources of time-dependent mechanical behavior were incorporated: viscoelasticity of the matrix, and fluid permeation. In addition, a novel strain-dependent swelling pressure was implemented through the introduction of a dilatational stress in nuclear elements. The model was then validated against data ...
http://biomechanical.asmedigitalcollection.asme.org/article.aspx?articleid=1415240
Biomechanical influence of the therapeutic position on the efficacy of chinese manipulation in treating lumbar disc herniation ...
Purpose: To determine the favorable therapeutic position for Chinese manipulation in treating lumbar disc herniation. Methods: We developed a three-dimensional finite element model of L3-5 for the normal spine, along with a mild degeneration and a moderate degeneration model, and carried out a comparative study between the manipulation with lateral position and that with sitting position. The displacement and stress distribution in the intervertebral disc of L4 were investigated. Results: A displacement and stress directing forwards concentrated on the left rear of L4 disc were found in the three models under the two manipulations. The values of displacement and stress under the manipulations with lateral position are larger than those with sitting position in the three models. Conclusion: Lateral position has a better biomechanical effect than sitting position in treating lumbar disc herniation.. ...
http://www.journalcra.com/article/biomechanical-influence-therapeutic-position-efficacy-chinese-manipulation-treating-lumbar
Pressure-Induced Deformation of Schlemms Canal Endothelial Cells | IOVS | ARVO JournalsPressure-Induced Deformation of Schlemms Canal Endothelial Cells | IOVS | ARVO Journals
Purpose: : Schlemms canal endothelial (SCE) cells are exposed to a basal-to-apical pressure difference that causes the cells to deform. We used finite element models and measured mechanical properties to determine the maximum pressure drop that SCE cells can support. Methods: : Finite element models of typical SCE cells were developed using scanning (SEM) and transmission (TEM) electron micrographs. Based on SEM images of the inner wall endothelium from 8 human eyes, 3 typical cellular footprints were chosen. Thickness profiles were measured from TEM images of 10 inner wall cells from 5 human eyes. Cell models were constructed using the 3 typical footprints and two possible thicknesses: (i) the average thickness of the cells; and (ii) the maximum thickness, the latter corresponding to a very strong cell (conservative case). Cells were assumed to be attached only at their periphery.A commercial finite element package ABAQUS was then used to compute: (i) cellular deformations for different ...
https://iovs.arvojournals.org/article.aspx?articleid=2377082
Probabilistic evaluation of the material properties of the in vivo subject-specific articular surface using a computational...
TY - JOUR. T1 - Probabilistic evaluation of the material properties of the in vivo subject-specific articular surface using a computational model. AU - Kang, Kyoung Tak. AU - Kim, Sung Hwan. AU - Son, Juhyun. AU - Lee, Young Han. AU - Kim, Shinil. AU - Chun, Heoung Jae. N1 - Publisher Copyright: © 2016 Wiley Periodicals, Inc.. PY - 2017/8. Y1 - 2017/8. N2 - This article used probabilistic analysis to evaluate material properties of the in vivo subject-specific tibiofemoral (TF) joint model. Sensitivity analysis, based on a Monte Carlo (MC) method, was performed using a subject-specific finite element (FE) model generated from in vivo computed tomography (CT) and magnetic resonance imaging (MRI) data, subjected to two different loading conditions. Specifically, the effects of inherent uncertainty in ligament stiffness, horn attachment stiffness, and articular surface material properties were assessed using multifactorial global sensitivity analysis. The MRI images were taken before and after ...
https://keio.pure.elsevier.com/en/publications/probabilistic-evaluation-of-the-material-properties-of-the-in-viv
Lateral pressure equalisation as a principle for designing support surfaces to prevent deep tissue pressure ulcersLateral pressure equalisation as a principle for designing support surfaces to prevent deep tissue pressure ulcers
When immobile or neuropathic patients are supported by beds or chairs, their soft tissues undergo deformations that can cause pressure ulcers. Current support surfaces that redistribute under-body pressures at vulnerable body sites have not succeeded in reducing pressure ulcer prevalence. Here we show that adding a supporting lateral pressure can counter-act the deformations induced by under-body pressure, and that this pressure equalisation approach is a more effective way to reduce ulcer-inducing deformations than current approaches based on redistributing under-body pressure. A finite element model of the seated pelvis predicts that applying a lateral pressure to the soft tissue reduces peak von Mises stress in the deep tissue by a factor of 2.4 relative to a standard cushion (from 113 kPa to 47 kPa)-a greater effect than that achieved by using a more conformable cushion, which reduced von Mises stress to 75 kPa. Combining both a conformable cushion and lateral pressure reduced peak von Mises
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0227064
The mechanical effects of different levels of cement penetration at the cement-bone interface.The mechanical effects of different levels of cement penetration at the cement-bone interface.
The mechanical effects of varying the depth of cement penetration in the cement-bone interface were investigated using finite element analysis (FEA) and validated using companion experimental data. Two FEA models of the cement-bone interface were created from micro-computed tomography data and the penetration of cement into the bone was varied over six levels each. The FEA models, consisting of the interdigitated cement-bone constructs with friction between cement and bone, were loaded to failure in tension and in shear. The cement and bone elements had provision for crack formation due to excessive stress. The interfacial strength showed a strong relationship with the average interdigitation (r(2)=0.97 and r(2)=0.93 in tension and shear, respectively). Also, the interface strength was strongly related with the contact area (r(2)=0.98 and r(2)=0.95 in tension and shear, respectively). The FEA results compared favorably to the stiffness-strength relationships determined experimentally. Overall, ...
https://repository.ubn.ru.nl/handle/2066/87810
The effect of vertical bracket positioning on torque and the resultant stress in the periodontal ligament-a finite element...The effect of vertical bracket positioning on torque and the resultant stress in the periodontal ligament-a finite element...
The ideal built-in tip and torque values of the straight wire appliance reduce the need for wire bending and hence reduce chair time. The vertical position of the bracket on the tooth surface can alter the torque exerted on the tooth. This is a result of the altered surface curvature observed at each vertical position. To further clarify the role of vertical bracket positioning on the applied torque and the resultant stresses in the periodontal ligament (PDL), we designed a mandibular first premolar using finite element modeling. Cone beam computed tomography of 52 patients (83 lower first premolars) was selected to be included in the study. Curvature was measured for points along the labial surface with increasing distances (0.5 mm increments) from the cusp tip by calculating the angle between tangents drawn from these points and the axis joining the cusp tip and the root apex. The mean values for each distance were calculated, and a finite element model was designed incorporating these mean values.
https://progressinorthodontics.springeropen.com/articles/10.1186/s40510-014-0050-0/tables/2
Finite element computational procedure for convective flow of nanofluids in an annulus<...
TY - JOUR. T1 - Finite element computational procedure for convective flow of nanofluids in an annulus. AU - Uddin, M. J.. AU - Rahman, M. M.. PY - 2018/6. Y1 - 2018/6. N2 - In the present study, the detailed procedures of Galerkin weighted residual technique of finite element method (FEM) for solving two-dimensional incompressible natural convective flow of nanofluids using nonhomogeneous dynamic model are discussed for the first time. The physical domain is discretized by using unstructured triangular elements. The governing partial differential equations of nanofluids are made dimensionless using the suitable transformation of variables for weak formulations. The method of weighted residuals is used for obtaining the approximate solutions. This approach typically leads to a sparse and indefinite matrix that is difficult to solve efficiently. The formation of an indefinite matrix is avoided in the present work by introducing an artificial compressibility term in the continuity equation. ...
https://squ.pure.elsevier.com/en/publications/finite-element-computational-procedure-for-convective-flow-of-nan-2
Bio-Medical Materials and Engineering - Volume 30, issue 5-6 - Journals - IOS PressBio-Medical Materials and Engineering - Volume 30, issue 5-6 - Journals - IOS Press
Authors: Robau-Porrua, Amanda , Pérez-Rodríguez, Yoan , Soris-Rodríguez, Laura M. , Pérez-Acosta, Osmel , González, Jesús E. Article Type: Research Article Abstract: This study investigated the effect of three different parameters of a dental implant on stress and strain values in the peri-implant bone by finite element analysis. In this work, the effect of diameter, length and elastic modulus on the biomechanical behavior of a new dental implant was simulated using the finite element method. A three-dimensional model of a mandible segment corresponding to the premolar region and twelve dental implant models were obtained. Loads in three directions were distributed on the surface of the coronal area of the dental implants. The dental implant models were obtained in the FreeCAD 0.16 software …and the simulations were made using the Abaqus/CAE software. In all cases, higher stress concentrations were obtained in the peri-implant cortical bone between 40.6 and 62.8 MPa, while the highest ...
https://content.iospress.com/journals/bio-medical-materials-and-engineering/30/5-6
Scientific.Net: Materials ScienceScientific.Net: Materials Science
Abstract: Being as a functional material, piezoelectric ceramics is applied to drive a micropump when it is composed to be a thin membrane on a brass film to form a diaphragm. According to the properties of the piezoelectric material, the stiffness of the diaphragm influences the vibration displacement and therefore the supply flow rate of the micropump. This paper focuses on the dynamic characteristic study of the micropump and the stiffness influence of the diaphragm on the characteristics. The mathematical model of the valve-less micropump considering the diaphragm stiffness is developed in order to predict the dynamic characteristics of the piezoelectric valve-less micropump. Using the 3-D finite element analysis (FEA) method, the static and vibration mode of the diaphragm are analyzed to obtain the diaphragm stiffness and natural frequency. The method using Matlab is to predict the pressure and flow rate characteristics of the micropump when the diaphragm stiffness is considered or not. ...
https://www.scientific.net/keyword/Micro_Pump
Effects of material properties on bacterial adhesion and biofilm formation<...
TY - JOUR. T1 - Effects of material properties on bacterial adhesion and biofilm formation. AU - Song, F.. AU - Koo, H.. AU - Ren, D.. PY - 2015/8/25. Y1 - 2015/8/25. N2 - Adhesion of microbes, such as bacteria and fungi, to surfaces and the subsequent formation of biofilms cause multidrug-tolerant infections in humans and fouling of medical devices. To address these challenges, it is important to understand how material properties affect microbe-surface interactions and engineer better nonfouling materials. Here we review the recent progresses in this field and discuss the main challenges and opportunities. In particular, we focus on bacterial biofilms and review the effects of surface energy, charge, topography, and stiffness of substratum material on bacterial adhesion. We summarize how these surface properties influence oral biofilm formation, and we discuss the important findings from nondental systems that have potential applications in dental medicine.. AB - Adhesion of microbes, such as ...
https://experts.syr.edu/en/publications/effects-of-material-properties-on-bacterial-adhesion-and-biofilm-
Porohyperelastic Finite Element Modeling of Abdominal Aortic Aneurysms | Journal of Biomechanical Engineering | ASME Digital...Porohyperelastic Finite Element Modeling of Abdominal Aortic Aneurysms | Journal of Biomechanical Engineering | ASME Digital...
Abdominal aortic aneurysm (AAA) is the gradual weakening and dilation of the infrarenal aorta. This disease is progressive, asymptomatic, and can eventually lead to rupture-a catastrophic event leading to massive internal bleeding and possibly death. The mechanical environment present in AAA is currently thought to be important in disease initiation, progression, and diagnosis. In this study, we utilize porohyperelastic (PHE) finite element models (FEMs) to investigate how such modeling can be used to better understand the local biomechanical environment in AAA. A 3D hypothetical AAA was constructed with a preferential anterior bulge assuming both the intraluminal thrombus (ILT) and the AAA wall act as porous materials. A parametric study was performed to investigate how physiologically meaningful variations in AAA wall and ILT hydraulic permeabilities affect luminal interstitial fluid velocities and wall stresses within an AAA. A corresponding hyperelastic (HE) simulation was also run in order ...
https://asmedigitalcollection.asme.org/biomechanical/article-abstract/132/10/104502/459901/Porohyperelastic-Finite-Element-Modeling-of?redirectedFrom=fulltext
Multiscale Design and Multiobjective Optimization of Orthopaedic Cellular Hip Implants | Volume 5: 37th Design Automation...Multiscale Design and Multiobjective Optimization of Orthopaedic Cellular Hip Implants | Volume 5: 37th Design Automation...
A multiscale design and multiobjective optimization procedure is developed to design a new type of graded cellular hip implant. We assume that the prosthesis design domain is occupied by a unit cell representing the building block of the implant. An optimization strategy seeks the best geometric parameters of the unit cell to minimize bone resorption and interface failure, two conflicting objective functions. Using the asymptotic homogenization method, the microstructure of the implant is replaced by a homogeneous medium with an effective constitutive tensor. This tensor is used to construct the stiffness matrix for the finite element modeling (FEM) solver that calculates the value of each objective function at each iteration. As an example, a 2D finite element model of a left implanted femur is developed. The relative density of the lattice material is the variable of the multiobjective optimization, which is solved through the non-dominated sorting genetic algorithm II (NSGA-II). The set of ...
http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1640736
Finite Element Analysis Examining the Effects of Cam FAI on Hip Joint Mechanical Loading Using Subject-Specific Geometries...Finite Element Analysis Examining the Effects of Cam FAI on Hip Joint Mechanical Loading Using Subject-Specific Geometries...
Cam femoroacetabular impingement (FAI) can impose elevated mechanical loading in the hip, potentially leading to an eventual mechanical failure of the joint. Since in vivo data on the pathomechanisms
https://link.springer.com/article/10.1007/s11420-012-9292-x
همسان‌گردی - ویکی‌پدیا، دانشنامهٔ آزادهمسان‌گردی - ویکی‌پدیا، دانشنامهٔ آزاد
In the study of mechanical properties of materials, isotropic means having identical values of a property in all directions. This definition is also used in geology and mineralogy. Glass and metals are examples of isotropic materials.[3] Common anisotropic materials include wood, because its material properties are different parallel and perpendicular to the grain, and layered rocks such as slate. Isotropic materials are useful since they are easier to shape, and their behavior is easier to predict. Anisotropic materials can be tailored to the forces an object is expected to experience. For example, the fibers in carbon fiber materials and rebars in reinforced concrete are oriented to withstand tension. ...
https://fa.wikipedia.org/wiki/%D9%87%D9%85%D8%B3%D8%A7%D9%86%DA%AF%D8%B1%D8%AF?match=en
Study of ultrasonic upsetting under radial and longitudinal die vibration<...
TY - GEN. T1 - Study of ultrasonic upsetting under radial and longitudinal die vibration. AU - Huang, Zhi Hong. AU - Lucas, M.. AU - Adams, M.J.. N1 - Copyright 2010 Elsevier B.V., All rights reserved.. PY - 2003. Y1 - 2003. N2 - A finite element analysis was described for the upsetting of a cylindrical specimen between two parallel rigid dies. The benefits of radial and longitudinal ultrasonic oscillation of the die in compressive deformation of a model soft solid were studied. The influence of oscillation direction on the interfacial friction boundary condition and thermal effects during the process was investigated. It was observed that oscillation in the radial direction results in greater reductions in forming force and friction.. AB - A finite element analysis was described for the upsetting of a cylindrical specimen between two parallel rigid dies. The benefits of radial and longitudinal ultrasonic oscillation of the die in compressive deformation of a model soft solid were studied. The ...
https://discovery.dundee.ac.uk/en/publications/study-of-ultrasonic-upsetting-under-radial-and-longitudinal-die-v
Local Hierarchical Grid Refinement for Analysis Using Structured Grids | Volume 2: 29th Computers and Information in...Local Hierarchical Grid Refinement for Analysis Using Structured Grids | Volume 2: 29th Computers and Information in...
Structured grids with regular shaped uniform elements are easy to generate automatically and have been used in extended finite element approaches to avoid mesh generation difficulties. But the grid or mesh should ideally have higher resolution in areas where the solution has large gradients. In this paper a technique for refinement of structured grids is presented that allows refinement of the grid without violating compatibility requirements by using solution structures constructed using approximate step functions. Essential boundary conditions are applied using implicit boundary method, which allows boundary conditions to be imposed even when there are no nodes on the boundary. This grid refinement technique is evaluated using two dimensional elasticity problems that involve stress concentration.. Copyright © 2009 by ASME ...
http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1649177
Finite element analysis of load transition on sacroiliac joint during bipedal walkingFinite element analysis of load transition on sacroiliac joint during bipedal walking
Publikations-Datenbank der Fraunhofer Wissenschaftler und Institute: Aufsätze, Studien, Forschungsberichte, Konferenzbeiträge, Tagungsbände, Patente und Gebrauchsmuster
http://publica.fraunhofer.de/dokumente/N-599674.html
Computational procedures for finite element analysis of hot-workingComputational procedures for finite element analysis of hot-working
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission ...
https://dspace.mit.edu/handle/1721.1/13617
Downscale Finite Element Modeling of Aortic Valve Leaflets for In-Situ Estimation of Cell Level MechanicsDownscale Finite Element Modeling of Aortic Valve Leaflets for In-Situ Estimation of Cell Level Mechanics
As in all tissues, mechanical forces in the aortic valve (AV) modulate the constituent cell populations physiology and biosynthetic activity. While advances have been made toward the understanding of this complex multi-scale relationship, the specific role that and extracellular matrix (ECM) coupling plays on the mechanical response of the AV interstitial cell (AVIC) is poorly understood. The current work, building on our previous preliminary work [1], explores the impact of cellular contractile behavior on effective tissue level stiffness in an effort to gain insight into the complex mechanisms involved. By developing a computational tool to separate intrinsic cell mechanics from the ECM in-situ, we can obtain an accurate representation of AVIC behavior within the native valve connective tissue matrix microenvironment. Two computational finite element (FE) models were developed using COMSOL Multiphysics 4.3 that represent the tissue-level (macro-scale) and the cell level (micro-scale) of the ...
https://www.comsol.com/paper/downscale-finite-element-modeling-of-aortic-valve-leaflets-for-in-situ-estimatio-13098
Nonlinear Dynamics of a Rotating Flexible Link | Journal of Computational and Nonlinear Dynamics | ASME DCNonlinear Dynamics of a Rotating Flexible Link | Journal of Computational and Nonlinear Dynamics | ASME DC
This paper deals with the study of the nonlinear dynamics of a rotating flexible link modeled as a one dimensional beam, undergoing large deformation and with geometric nonlinearities. The partial differential equation of motion is discretized using a finite element approach to yield four nonlinear, nonautonomous and coupled ordinary differential equations (ODEs). The equations are nondimensionalized using two characteristic velocities-the speed of sound in the material and a velocity associated with the transverse bending vibration of the beam. The method of multiple scales is used to perform a detailed study of the system. A set of four autonomous equations of the first-order are derived considering primary resonances of the external excitation and one-to-one internal resonances between the natural frequencies of the equations. Numerical simulations show that for certain ranges of values of these characteristic velocities, the slow flow equations can exhibit chaotic motions. The numerical ...
http://computationalnonlinear.asmedigitalcollection.asme.org/article.aspx?articleid=1920750
Performance and Risk Assessment of Soil-Structure Interaction Systems Based on Finite Element Reliability MethodsPerformance and Risk Assessment of Soil-Structure Interaction Systems Based on Finite Element Reliability Methods
Mathematical Problems in Engineering is a peer-reviewed, Open Access journal that publishes results of rigorous engineering research carried out using mathematical tools. Contributions containing formulations or results related to applications are also encouraged. The primary aim of Mathematical Problems in Engineering is rapid publication and dissemination of important mathematical work which has relevance to engineering. All areas of engineering are within the scope of the journal. In particular, aerospace engineering, bioengineering, chemical engineering, computer engineering, electrical engineering, industrial engineering and manufacturing systems, and mechanical engineering are of interest. Mathematical work of interest includes, but is not limited to, ordinary and partial differential equations, stochastic processes, calculus of variations, and nonlinear analysis.
https://www.hindawi.com/journals/mpe/2014/704804/ref/
JIS K6400 PDF
Naramar Hardness indentation technique and stress-strain characteristics in compression. Water from to generate carbon dioxide gas reacts with the polyisocyanate component, which acts as a blowing agent.. For wood adhesives in wood composites, the internal bond strength test can be done with a or testing machine to determine the tensile strength. This is succeeding model of AF Series which had many delivery result to car industries, seat kis, raw materials manufacturers and public enterprises etc.. Chiao Fu Enterprise Co. AF Series is Automatic Hardness Tester for flexible urethane foams to be used for cushion materials in such products as car seat, furniture, and bedding, and for other kind of plastic foam. JIS-S This tester is for evaluating the strength and durability of furniture such as chairs or stools. A finite element approach with simplified room descriptionActa Acustica united with Acustica, , - Flexible polyurethane foam, process for its production, and seat for ...
https://kurs-wm.ru/business/jis-k6400.php
A parametric study on fatigue strength of spot-weld joints: Ingenta ConnectA parametric study on fatigue strength of spot-weld joints: Ingenta Connect
In this study, the effects of these parameters on the fatigue life of spot-weld joints have been investigated. For this purpose, one of the most reliable fatigue assessment models, Coffin-Manson approach, was used. In order to accurately determine the stress and strain states, a nonlinear finite element analysis was carried out taking into account plastic deformations, residual stresses developed after unloading and contacting surfaces. The results provide designers with some guidelines to foresee the impact of design changes on fatigue strength of spot-weld joints ...
http://www.ingentaconnect.com/content/bsc/ffe/2008/00000031/00000009/art00004
Publications - Institute for Bioengineering of CataloniaPublications - Institute for Bioengineering of Catalonia
The characterization of the mechanical properties of soft materials has been traditionally performed through uniaxial tensile tests. Nevertheless, this method cannot be applied to certain extremely soft materials, such as biological tissues or cells that cannot be properly subjected to these tests. Alternative non-destructive tests have been designed in recent years to determine the mechanical properties of soft biological tissues. One of these techniques is based on the use of atomic force microscopy (AFM) to perform nanoindentation tests. In this work, we investigated the mechanical response of soft biological materials to nanoindentation with spherical indenters using finite element simulations. We studied the responses of three different material constitutive laws (elastic, isotropic hyperelastic and anisotropic hyperelastic) under the same process and analyzed the differences thereof. Whereas linear elastic and isotropic hyperelastic materials can be studied using an axisymmetric ...
https://ibecbarcelona.eu/for-researchers/publications/Nanoindentation/
Analysis of essentially non-linear vibration of large-scale models for bladed discs with variable contact and friction at root...Analysis of essentially non-linear vibration of large-scale models for bladed discs with variable contact and friction at root...
An effective method has been developed for analysis of the multiharmonic forced response of large-scale finite element models of bladed discs with contact interfaces at blade roots. Area contact elements are developed to model nonlinear forces acting at the contact surfaces. The elements allow for unilateral normal and tangential friction contact forces. The friction model includes effects of the variable normal load and variation of the contact area. Numerical investigations of the forced response for realistic finite element models of bladed discs with root damping are performed for the first time. ...
http://sro.sussex.ac.uk/42995/
Trabecular Surface Remodeling Simulation for Cancellous Bone Using Microstructural Voxel Finite Element Models | Journal of...Trabecular Surface Remodeling Simulation for Cancellous Bone Using Microstructural Voxel Finite Element Models | Journal of...
Copyright in the material you requested is held by the American Society of Mechanical Engineers (unless otherwise noted). This email ability is provided as a courtesy, and by using it you agree that you are requesting the material solely for personal, non-commercial use, and that it is subject to the American Society of Mechanical Engineers Terms of Use. The information provided in order to email this topic will not be used to send unsolicited email, nor will it be furnished to third parties. Please refer to the American Society of Mechanical Engineers Privacy Policy for further information ...
http://biomechanical.asmedigitalcollection.asme.org/article.aspx?articleid=1406264
Effects of varied lipid core volume and fibrous cap thickness on stress distribution in carotid arterial plaques - StrathprintsEffects of varied lipid core volume and fibrous cap thickness on stress distribution in carotid arterial plaques - Strathprints
The rupture of atherosclerotic plaques is known to be associated with the stresses that act on or within the arterial wall. The extreme wall tensile stress is usually recognized as a primary trigger for the rupture of the plaque. The present study used one-way fluid-structure interaction simulation to investigate the impacts of fibrous cap thickness and lipid core volume to the wall tensile stress value and distributions on the fibrous cap. Von Mises stress was employed to represent the wall tensile stress (VWTS). A total of 13 carotid bifurcation cases were manipulated based on a base geometry in the study with varied combinations of fibrous cap thickness and lipid core volume in the plaque. Values of maximum VWTS and a stress value of VWTS_90, which represents the cut-off VWTS value of 90% in cumulative histogram of VWTS possessed at the computational nodes on the luminal surface of fibrous cap, were used to assess the risk of plaque rupture for each case. Both parameters are capable of ...
https://strathprints.strath.ac.uk/29289/
Search - SAE InternationalSearch - SAE International
Finite element models of human body segments have been developed in recent years. Numerical simulation could be helpful when understanding injury mechanisms and to make injury assessments. In the lower leg injury research in NISSAN, a finite element model of the human ankle/foot is under development. The mesh for the bony part was taken from the original model developed by Beaugonin et al., but was revised by adding soft tissue to reproduce realistic responses. Damping effect in a high speed contact was taken into account by modeling skin and fat in the sole of the foot. The plantar aponeurosis tendon was modeled by nonlinear bar elements connecting the phalanges to the calcaneus. The rigid body connection, which was defined at the toe in the original model for simplicity, was removed and the transverse ligaments were added instead in order to bind the metatarsals and the phalanges. These tendons and ligaments were expected to reproduce a realistic response in compression ...
https://www.sae.org/search/?sort=date&display=list&affiliations=%28%22Wayne+State+Univ.%22%29&taxonomy=%28%2250157%22+OR+%2250362%22+OR+%2250662%22+OR+%2250331%22%29
Optimization of compression molding of stand-alone microlenses: Simulation and experimental results - Mirkhalaf - 2010 -...Optimization of compression molding of stand-alone microlenses: Simulation and experimental results - Mirkhalaf - 2010 -...
Hot compression molding is a promising method to fabricate polymer stand-alone microlenses. A reliable theoretical as well as statistical analysis is required for the optimization of the process to minimize the residual stresses and to predict the amount of springback to achieve a better replication of the mold profile. This article in this context focuses on the finite element simulation (FES), optimization as well as experimental validation of hot compression molding of polymer stand-alone microlenses. Three steps such as molding, cooling, and demolding, under different molding parameters, were analyzed using ABAQUS/standard solver and the results were compared with experimental results. Compression test and compression relaxation test have been conducted at different temperatures and strain rates to characterize the rheological behavior of material. Two material models, linear viscoelastic and hyperelastic-viscoelastic models, were developed and used for compression test simulations. ...
http://onlinelibrary.wiley.com/doi/10.1002/pen.21738/full
A Global Finite Element Model for Improving the Thermo-Mechanical Reliability of IBGTs Modules
Insulated Gate Bipolar Transistors (IGBTs) are widely used in the automotive industry as high power current switches. They are currently being introduced into traction applications (locomotives, trams, metros, etc.) where high reliability is extremely important. Modern locomotives have a lifetime of about 30 years during which they should not fail. Due to the complexity of the modules as mechanical systems and as electric circuits, it is of prime importance to select and set up the most suitable models which allow to extract valuable data. Accordingly, this work describes the models and associated equations which appear to be necessary to carry out failure analysis. It includes a general stationary fully coupled electro-thermomechanical analysis which is actually part of the commercial release of the software SOLIDIS-ISE. More specific features tailored to IGBTs failure analysis are currently implemented. It comprises thermal transient effects and plasticity/damage based models for the stress analysis.
http://www.nsti.org/procs/MSM98/3/T2.4.2
Digitizing for Computer-Aided Finite Element Model Generation-Part 2: Use of Digitizing in Mesh Generation | Journal of...Digitizing for Computer-Aided Finite Element Model Generation-Part 2: Use of Digitizing in Mesh Generation | Journal of...
Copyright in the material you requested is held by the American Society of Mechanical Engineers (unless otherwise noted). This email ability is provided as a courtesy, and by using it you agree that you are requesting the material solely for personal, non-commercial use, and that it is subject to the American Society of Mechanical Engineers Terms of Use. The information provided in order to email this topic will not be used to send unsolicited email, nor will it be furnished to third parties. Please refer to the American Society of Mechanical Engineers Privacy Policy for further information ...
http://mechanicaldesign.asmedigitalcollection.asme.org/article.aspx?articleid=1451241
Finite element limit analysisFinite element limit analysis
A finite element limit analysis (FELA) uses optimisation techniques to directly compute the upper or lower bound plastic ... "Lower-bound finite elements limit analysis for Hoek-Brown materials using semidefinite programming." Journal of Engineering ... Sloan, S. (1988). Lower bound limit analysis using finite elements and linear programming. Int. J. Num. Anal. Meth. in Geomech ... "Bearing capacity factors of circular foundations for a general c-ϕ soil using lower bound finite elements limit analysis." ...
https://en.wikipedia.org/wiki/Finite_element_limit_analysis
Smoothed finite element methodSmoothed finite element method
An n-sided polygonal smoothed finite element method (nSFEM) for solid mechanics. Finite Elements in Analysis and Design; 43: ... Generalized stochastic cell-based smoothed finite element method (GS_CS-FEM) for solid mechanics, Finite Elements in Analysis ... Finite element method Meshfree methods Weakened weak form Loubignac iteration Liu, G.R., 2010 Smoothed Finite Element Methods, ... An edge-based smoothed finite element method (ES-FEM) using 3-node triangular elements for 3D non-linear analysis of spatial ...
https://en.wikipedia.org/wiki/Smoothed_finite_element_method
List of finite element software packagesList of finite element software packages
"Browsing VisualFEA (Finite Element Analysis) by Title". Ecommons.cornell.edu. 2016-03-01. Retrieved 2017-05-28. GitHub For ease ... Finite element software, Numerical analysis, Lists of software). ... of notable software packages that implement the finite element ...
https://en.wikipedia.org/wiki/List_of_finite_element_software_packages
Finite element methodFinite element method
The Finite Element Method: Linear Static and Dynamic Finite Element Analysis, Prentice-Hall (1987). J. Chaskalovic: Finite ... Discrete element method Finite difference method Finite element machine Finite element method in structural mechanics Finite ... flow Infinite element method Interval finite element Isogeometric analysis Lattice Boltzmann methods List of finite element ... The mixed finite element method is a type of finite element method in which extra independent variables are introduced as nodal ...
https://en.wikipedia.org/wiki/Finite_element_method
Finite element exterior calculusFinite element exterior calculus
On the A Priori and A Posteriori Error Analysis in Finite Element Exterior Calculus. Diss. Dissertation, Department of ... Finite element exterior calculus (FEEC) is a mathematical framework that formulates finite element methods using chain ... "Finite elements in computational electromagnetism." Acta Numerica 11 (2002): 237-339. Kirby, Robert C. "Low-complexity finite ... "A Systematic Construction of Finite Element Commuting Exact Sequences". SIAM Journal on Numerical Analysis. 55 (4): 1650-1688. ...
https://en.wikipedia.org/wiki/Finite_element_exterior_calculus
Finite element updatingFinite element updating
Finite element model updating is the process of ensuring that finite element analysis results in models that better reflect the ... FEMtools : Software for finite element model updating in static and dynamic structural analysis (Finite element method). ... Recently, finite element model updating has been conducted using Bayesian statistics which gives a probabilistic interpretation ... Levin, R.I.; Lieven, N.A.J. (January 1998). "Dynamic finite element model updating using simulated annealing and genetic ...
https://en.wikipedia.org/wiki/Finite_element_updating
Mixed finite element methodMixed finite element method
In numerical analysis, the mixed finite element method, is a type of finite element method in which extra fields to be solved ... To be distinguished from the mixed finite element method, usual finite element methods that do not introduce such extra fields ... v t e (CS1 maint: url-status, Finite element method, All stub articles, Mathematical analysis stubs). ... are also called irreducible or primal finite element methods. The mixed finite element method is efficient for some problems ...
https://en.wikipedia.org/wiki/Mixed_finite_element_method
Barna SzabóBarna Szabó
"Finite Element Analysis". Wiley.com. "Introduction to Finite Element Analysis: Formulation, Verification and Validation". Wiley ... Finite Element Analysis. John Wiley & Sons: New York, 1991. Szabó B.A. and Babuška I. Introduction to Finite Element Analysis: ... Version of the Finite Element Method". SIAM Journal on Numerical Analysis. 18 (3): 515-545. Bibcode:1981SJNA...18..515B. doi: ... Work at CCM focused on what later became known as the p-version of the finite element method. In order to facilitate the ...
https://en.wikipedia.org/wiki/Barna_Szabó
Interval finite elementInterval finite element
In numerical analysis, the interval finite element method (interval FEM) is a finite element method that uses interval ... Because of that the results of the interval finite element (or in general worst-case analysis) may be overestimated in ... The goal of the Interval Finite Element is to find upper and lower bounds of different characteristics of the model (e.g. ... Finite element method lead to the following parameter dependent system of algebraic equations K ( p ) u = Q ( p ) , p ∈ p {\ ...
https://en.wikipedia.org/wiki/Interval_finite_element
Euler-Bernoulli beam theoryEuler-Bernoulli beam theory
Reddy, J. N. (2007). Nonlinear finite element analysis. Oxford University Press. E. A. Witmer (1991-1992). "Elementary ... The initial length of this element is d x {\displaystyle \mathrm {d} x} . However, after bending, the length of the element ... Let d x {\displaystyle \mathrm {d} x} be the length of an element of the neutral surface in the undeformed state. For small ... d A {\displaystyle dA} is the differential element of area at the location of the fiber. The differential bending moment vector ...
https://en.wikipedia.org/wiki/Euler–Bernoulli_beam_theory
Finite element method in structural mechanicsFinite element method in structural mechanics
Finite element method Flexibility method Matrix stiffness method Modal analysis using FEM List of finite element software ... Finite element concepts were developed based on engineering methods in 1950s. The finite element method obtained its real ... The original works such as those by Argyris and Clough became the foundation for today's finite element structural analysis ... packages Structural analysis Virtual work Interval finite element Matrix Analysis Of Framed Structures, 3rd Edition by Jr. ...
https://en.wikipedia.org/wiki/Finite_element_method_in_structural_mechanics
Engineering design processEngineering design process
Widas, P. (1997, April 9). Introduction to finite element analysis. Retrieved from "Introduction to Finite Element Analysis". ... Among the fundamental elements of the design process are the establishment of objectives and criteria, synthesis, analysis, ... It can also calculate stress and displacement using the finite element method to determine stresses throughout the part. The ... It outlines and analyses alternatives or methods of achieving the desired outcome. The feasibility study helps to narrow the ...
https://en.wikipedia.org/wiki/Engineering_design_process
Composite materialComposite material
Pre-construction testing may adopt finite element analysis (FEA) for ply-by-ply analysis of curved surfaces and predicting ... What is Finite Element Analysis? Matzkanin, George A.; Yolken, H. Thomas. "Techniques for the Nondestructive Evaluation of ... Within the finished structure, the individual elements remain separate and distinct, distinguishing composites from mixtures ... dissimilar chemical or physical properties and are merged to create a material with properties unlike the individual elements. ...
https://en.wikipedia.org/wiki/Composite_material
Emily RayfieldEmily Rayfield
Finite element analysis in vertebrate morphology. Annual Reviews in Earth and Planetary Sciences 35: 541-576. Rayfield, E. J. ... This study was expanded upon in a comparative finite element analysis of 2D theropod skulls (namely Allosaurus Coelophysis and ... using computational methods such as finite element analysis (FEA). In the landmark paper Rayfield et al. (2001), the skull of ...
https://en.wikipedia.org/wiki/Emily_Rayfield
AASHO Road TestAASHO Road Test
Helwany, Sam (n.d.). "Finite Element Analyses of Flexible Pavements". Archived from the original on February 15, 2005.[self- ...
https://en.wikipedia.org/wiki/AASHO_Road_Test
Sonic boomSonic boom
Finite Elements in Analysis and Design. 40 (15): 2101-2124. doi:10.1016/j.finel.2004.01.010. Fox, Chris (4 June 2021). "United ...
https://en.wikipedia.org/wiki/Sonic_boom
Edge crush testEdge crush test
Some have involved finite element analysis. One of the commonly referenced empirical estimations was published by McKee in 1963 ...
https://en.wikipedia.org/wiki/Edge_crush_test
AnsysAnsys
... Mechanical finite element analysis software is used to simulate computer models of structures, electronics, or machine ... At the time, engineers performed finite element analysis (FEA) by hand. Westinghouse rejected Swanson's idea to automate FEA by ... Wahab, M.A. (2014). The Mechanics of Adhesives in Composite and Metal Joints: Finite Element Analysis with Ansys. Destech ... Reh, Stefan; Beley, Jean-Daniel; Mukherjee, Siddhartha; Khor, Eng Hui (2006). "Probabilistic finite element analysis using ...
https://en.wikipedia.org/wiki/Ansys
Baháʼí Institute for Higher EducationBaháʼí Institute for Higher Education
"Finite element for cylindrical thin shells under harmonic forces". Finite Elements in Analysis and Design. 52: 83-92. doi: ...
https://en.wikipedia.org/wiki/Baháʼí_Institute_for_Higher_Education
AbsementAbsement
Finite Elements in Analysis and Design. 91: 16-29. doi:10.1016/j.finel.2014.06.011. Integral Kinesiology Feedbackfor Weight and ... 270-2. Janzen et al 2014, IEEE GEM2014 paper Bratland, Magne; Haugen, Bjørn; Rølvåg, Terje (2014). "Modal analysis of active ... Jeltsema, D. (2012). Memory elements: A paradigm shift in Lagrangian modeling of electrical circuits. IFAC Proceedings Volumes ... thusly defining PID in the context of Integrals and Derivatives of a position of a control element in the Bratland sense ...
https://en.wikipedia.org/wiki/Absement
Meshfree methodsMeshfree methods
... based on strong form governing equation for adaptive analysis of solid mechanics problems". Finite Elements in Analysis and ... Numerical methods such as the finite difference method, finite-volume method, and finite element method were originally defined ... Generalized finite difference method (GFDM) Particle-in-cell (PIC) Moving particle finite element method (MPFEM) Finite cloud ... Meshfree Interface-Finite Element Method (MIFEM) (2015) - a hybrid finite element-meshfree method for numerical simulation of ...
https://en.wikipedia.org/wiki/Meshfree_methods
Bhrigu Nath SinghBhrigu Nath Singh
Finite Elements in Analysis and Design. 44 (9-10): 602-610. doi:10.1016/j.finel.2008.02.001.[clarification needed] Sienz, ... He has been listed among top most cited papers in International Journal of Finite Elements in Analysis and Design in 2014.[ ... June 2008). "An improved higher order zigzag theory for the static analysis of laminated sandwich plate with soft core". ... AC with 0 elements, Living people, 1968 births, Indian aerospace engineers, Wright State University alumni, IIT Kanpur alumni, ...
https://en.wikipedia.org/wiki/Bhrigu_Nath_Singh
Topology optimizationTopology optimization
Finite Elements in Analysis and Design. 135: 44-55. doi:10.1016/j.finel.2017.07.005. Jenkins, Nicholas; Maute, Kurt (2016). "An ... Large numbers of finite elements increases the attainable topological complexity, but come at a cost. Firstly, solving the FEM ... This is most commonly done using the finite element method since these equations do not have a known analytical solution. There ... Solving topology optimization problems in a discrete sense is done by discretizing the design domain into finite elements. The ...
https://en.wikipedia.org/wiki/Topology_optimization
MATLABMATLAB
ISBN 978-3-540-32612-0. Ferreira, A.J.M. (2009). MATLAB Codes for Finite Element Analysis. Springer. ISBN 978-1-4020-9199-5. ... Numerical analysis software for Linux, Numerical analysis software for macOS, Numerical analysis software for Windows, ... The list of elements should be surrounded by square brackets []. Parentheses () are used to access elements and subarrays (they ... For example, mod(2*J,n) will multiply every element in J by 2, and then reduce each element modulo n. MATLAB does include ...
https://en.wikipedia.org/wiki/MATLAB
Container compression testContainer compression test
Some have involved finite element analysis. One of the commonly referenced empirical estimations was published by McKee in 1963 ... "Box Compression Analysis of World Wide Data", Wood and Fiber Science, 2006, [1] Yam, K.L., "Encyclopedia of Packaging ...
https://en.wikipedia.org/wiki/Container_compression_test
ViscoelasticityViscoelasticity
Finite Element Analysis of Composite Materials. CRC Press, Boca Raton, Florida, 2007. S.A. Baeurle, A. Hotta, A.A. Gusev, ... Wagner, Manfred (1976). "Analysis of time-dependent non-linear stress-growth data for shear and elongational flow of a low- ... Viscoelastic materials have elements of both of these properties and, as such, exhibit time-dependent strain. Whereas ... The testing can be done at constant strain rate, stress, or in an oscillatory fashion (a form of dynamic mechanical analysis). ...
https://en.wikipedia.org/wiki/Viscoelasticity
ADINAADINA
... R & D sponsored twelve bi-yearly academic conferences at M.I.T. on nonlinear finite element analysis, the proceedings of ... Finite element software, Finite element software for Linux, Computational fluid dynamics). ... Bibcode:2007emmn.book.....I. "Nonlinear Finite Element Analysis and ADINA". Computers & Structures. 72 (Proceedings of the 12th ... The AUI can be used to import solid models, and finite element models in Nastran format, providing an interface to many CAD and ...
https://en.wikipedia.org/wiki/ADINA
FEBioFEBio
... (Finite Elements for Biomechanics) is a software package for finite element analysis and was specifically designed for ... Finite element software, Finite element software for Linux). ... Nonlinear Continuum Mechanics for Finite Element Analysis. ... Maas, SA; Ellis BJ; Ateshian GA; Weiss JA (2012). "FEBio: Finite elements for biomechanics". Journal of Biomechanical ... Solid 3D linear and quadratic elements (tetrahedral, hexahedral, pentahedral). Linear and quadratic shell elements that can be ...
https://en.wikipedia.org/wiki/FEBio
Dynamic design analysis methodDynamic design analysis method
Engineers use finite element method analysis software to verify designs using DDAM computer simulations that model the known ... "Nastran Finite Element Analysis and Simulation Software". NEi Software. Archived from the original on January 30, 2013. ... Finite element method, Numerical differential equations, Partial differential equations, Structural analysis). ... Dynamic Shock Analysis, and Dynamic Shock Analysis Extension Request. Barber, Pam; Arden, Kevin. "Dynamic Design Analysis ...
https://en.wikipedia.org/wiki/Dynamic_design_analysis_method
Leaning Tower of PisaLeaning Tower of Pisa
Finite Element Analysis in Geotechnical Engineering: Application. Thomas Telford. p. 254. ISBN 9780727727831. Archived from the ... It was built by Tommaso di Andrea Pisano, who succeeded in harmonizing the Gothic elements of the belfry with the Romanesque ... It was, however, considered important to retain the current tilt, due to the role that this element played in promoting the ... Roth, Leland M. (13 March 2018). Understanding Architecture: Its Elements, History, and Meaning. Routledge. p. 98. ISBN ...
https://en.wikipedia.org/wiki/Leaning_Tower_of_Pisa
Feedback with Carry Shift RegistersFeedback with Carry Shift Registers
This can be solved with a variant of Mahler and De Weger's lattice based analysis of N-adic numbers when N = 2 {\displaystyle N ... is a finite state device with a state ( a ; z ) = ( a 0 , a 1 , … , a r − 1 ; z ) {\displaystyle (a;z)=(a_{0},a_{1},\dots ,a_{r ... This is maximized when q is prime and N is a primitive element modulo q. In this case, the period is q − 1 {\displaystyle q-1 ... z)} consisting of a vector of elements a i {\displaystyle a_{i}} in { 0 , 1 , … , N − 1 } = S {\displaystyle \{0,1,\dots ,N-1 ...
https://en.wikipedia.org/wiki/Feedback_with_Carry_Shift_Registers
Uncertainty quantificationUncertainty quantification
... various material properties in a finite element analysis for engineering, and multiplier uncertainty in the context of ... For example, the finite element method or finite difference method may be used to approximate the solution of a partial ... "Modularization in Bayesian analysis, with emphasis on analysis of computer models". Bayesian Analysis. Institute of ... In regression analysis and least squares problems, the standard error of parameter estimates is readily available, which can be ...
https://en.wikipedia.org/wiki/Uncertainty_quantification
Frame (linear algebra)Frame (linear algebra)
Suppose H is a Hilbert space, X a locally compact space, and μ {\displaystyle \mu } is a locally finite Borel measure on X. ... Frames are used in error detection and correction and the design and analysis of filter banks and more generally in applied ... without removing elements in { e k } {\displaystyle \{\mathbf {e} _{k}\}} . The coefficients c k {\displaystyle c_{k}} will no ... The adjoint operator T ∗ {\displaystyle \mathbf {T} ^{*}} of the analysis operator is called the synthesis operator of the ...
https://en.wikipedia.org/wiki/Frame_(linear_algebra)
Alexander KlugeAlexander Kluge
"Öffentlichkeit und Erfahrung" has been translated into English as Public Sphere and Experience: Toward an Analysis of the ... AC with 30 elements, 1932 births, Living people, People from Halberstadt, Mass media people from Saxony-Anhalt, People from the ... Kluge and his studio are featured in the film Finite and Infinite Games by artist Sarah Morris. The film, which focuses around ... Analysis of the Bourgeois and Proletarian Public, trans. Peter Labany, Jamie Owen Daniel, and Assenka Oksiloff (Verso Books, ...
https://en.wikipedia.org/wiki/Alexander_Kluge
Old EnglishOld English
Questions were usually formed by inverting subject and finite verb, and negatives by placing ne before the finite verb, ... independent elements, and element order Mitchell, Bruce. (1990) A Critical Bibliography of Old English Syntax to the end of ... Analyses and Reconstruction). 244 p., in German with English summary, London/Berlin 2013, ISBN 978-3-9812110-7-8. Fulk, R. D. ( ... Finite verbs agree with subjects in person and number. The future tense, passive voice, and other aspects are formed with ...
https://en.wikipedia.org/wiki/Old_English
JosephoartigasiaJosephoartigasia
... and Blanco used finite element analysis to estimate the absolute maximum possible bite force of 967-1,850 N (217-416 lbf) at ... "Predicting bite force and cranial biomechanics in the largest fossil rodent using finite element analysis". Journal of Anatomy ... Carbon isotope analyses of the enamel of giant fossil rodents, including J. monesi, report that they ate only C3 plants, such ...
https://en.wikipedia.org/wiki/Josephoartigasia
Binary relationBinary relation
... which have an n-element set S and a set of k-element subsets called blocks, such that a subset with t elements lies in just one ... Structural analysis of relations with concepts provides an approach for data mining. Proposition: If R is a serial relation and ... Finite and infinite projective and affine planes are included. Jakob Steiner pioneered the cataloguing of configurations with ... It encodes the common concept of relation: an element x is related to an element y, if and only if the pair (x, y) belongs to ...
https://en.wikipedia.org/wiki/Binary_relation
Henry T. YangHenry T. Yang
... as well as a widely used textbook on finite element structural analysis. He has guided 54 Ph.D. and 20 M.S. recipients. In ... and finite elements, Yang was on the staff of Purdue University for 25 years. He first joined the faculty as an assistant ...
https://en.wikipedia.org/wiki/Henry_T._Yang
UML state machineUML state machine
Analysis by hierarchical state decomposition can include the application of the operation 'exclusive-OR' to any given state. ... In other words, these elements of the graphical notation do not add much value in representing flow of control as compared to ... UML state machine, also known as UML statechart, is an extension of the mathematical concept of a finite automaton in computer ... The goal of UML state machines is to overcome the main limitations of traditional finite-state machines while retaining their ...
https://en.wikipedia.org/wiki/UML_state_machine
Network synthesis filtersNetwork synthesis filters
The method can be viewed as the inverse problem of network analysis. Network analysis starts with a network and by applying the ... Values of prototype elements are published in tables, one of the first being due to Sidney Darlington. Both modern computing ... Otto Brune (1931) "Synthesis of a finite two-terminal network whose driving-point impedance is a prescribed function of ... The order of the filter is the number of filter elements present in the filter's ladder implementation. Generally speaking, the ...
https://en.wikipedia.org/wiki/Network_synthesis_filters
Andrew Clennel PalmerAndrew Clennel Palmer
... avoiding the need for numerically-laborious calculation of finite element analysis. In 1975, after his engagement with BP, ... He would deploy dimensional analysis, which he described as 'a magical way of finding useful results with almost no effort,' as ... as it is being laid by an S-lay barge by building a physical model and dimensional analysis, ...
https://en.wikipedia.org/wiki/Andrew_Clennel_Palmer
Suffix automatonSuffix automaton
Its elements are called "characters"; "Word" is a finite sequence of characters ω = ω 1 ω 2 … ω n {\displaystyle \omega =\omega ... one has to use the methods of amortized analysis. The value of l e n ( p ) {\displaystyle len(p)} strictly reduces with each ... In this example, the element x = 2 ∈ e n d p o s ( a b ) {\displaystyle x=2\in endpos(ab)} corresponds with the word s 3 s 4 s ... Formally, deterministic finite automaton is determined by 5-tuple A = ( Σ , Q , q 0 , F , δ ) {\displaystyle {\mathcal {A}}=(\ ...
https://en.wikipedia.org/wiki/Suffix_automaton
Frank HawthorneFrank Hawthorne
The elements of the adjacency matrix of this graph form a permutation group that is a subgroup of the symmetric group SN (where ... Infinite arrangements with translational symmetry may be represented by finite graphs via wrapping and extends this method to ... Luciano Ungaretti and Giuseppe Rossi in Pavia using large-scale crystal-structure refinement and electron-microprobe analysis ... Light lithophile elements (LLEs) can be important variable components in several groups of rock-forming minerals that were ...
https://en.wikipedia.org/wiki/Frank_Hawthorne
Asymptotic dimensionAsymptotic dimension
As shown by Guoliang Yu, finitely generated groups of finite homotopy type with finite asymptotic dimension satisfy the Novikov ... Asymptotic dimension has important applications in geometric analysis and index theory. Let X {\displaystyle X} be a metric ... Buyalo, Sergei; Schroeder, Viktor (2007). Elements of Asymptotic Geometry. EMS Monographs in Mathematics. European Mathematical ... is a finitely generated group of finite homotopy type (that is with a classifying space of the homotopy type of a finite CW- ...
https://en.wikipedia.org/wiki/Asymptotic_dimension
Lumped-element modelLumped-element model
Another way of viewing the validity of the lumped-element model is to note that this model ignores the finite time it takes ... The third assumption is the basis of the lumped-element model used in network analysis. Less severe assumptions result in the ... distributed elements but are often represented to a first-order approximation by lumped elements. To account for leakage in ... The lumped-element model is valid whenever L c ≪ λ {\displaystyle L_{c}\ll \lambda } , where L c {\displaystyle L_{c}} denotes ...
https://en.wikipedia.org/wiki/Lumped-element_model
Invariant subspace problemInvariant subspace problem
Bernstein & Robinson (1966) proved using non-standard analysis that if the operator T {\displaystyle T} on a Hilbert space is ... is an element of the Banach space H {\displaystyle H} , the orbit of x {\displaystyle x} under the action of T {\displaystyle T ... For finite-dimensional complex vector spaces, every operator admits an eigenvector, so it has a 1-dimensional invariant ... In the field of mathematics known as functional analysis, the invariant subspace problem is a partially unresolved problem ...
https://en.wikipedia.org/wiki/Invariant_subspace_problem
Mark TomfordeMark Tomforde
He works in the areas of functional analysis and algebra, and he earned his Ph.D. in mathematics at Dartmouth College in 2002. ... Desingularization allows one to extend many results for row-finite graphs to countable graphs, and it has become a standard ... Home page (Articles with short description, Short description matches Wikidata, Articles with hCards, AC with 0 elements, 20th- ... In his research, Tomforde has connected ideas from Functional Analysis and Algebra, and he has used techniques and methods from ...
https://en.wikipedia.org/wiki/Mark_Tomforde
Calculation of glass propertiesCalculation of glass properties
The finite element method may also be applied to glass forming processes. It is often required to optimize several glass ... In the form of statistical analysis glass modeling can aid with accreditation of new data, experimental procedures, and ... For modeling of the glass flow in a glass melting furnace the finite element method is applied commercially, based on data or ... sometimes combined with the finite element method. For estimating the melting enthalpy thermodynamic databases are used. If the ...
https://en.wikipedia.org/wiki/Calculation_of_glass_properties
Van der Waals radiusVan der Waals radius
A more recent analysis of the Cambridge Structural Database, carried out by Santiago Alvarez, provided a new set of values for ... Atomic radii of the elements (data page) van der Waals force van der Waals molecule van der Waals strain van der Waals surface ... a is a correction for intermolecular forces and b corrects for finite atomic or molecular sizes; the value of b equals the van ... "van der Waals Radius of the elements". Wolfram. Weast, Robert C., ed. (1981). CRC Handbook of Chemistry and Physics (62nd ed ...
https://en.wikipedia.org/wiki/Van_der_Waals_radius
Homoscedasticity and heteroscedasticityHomoscedasticity and heteroscedasticity
The existence of heteroscedasticity is a major concern in regression analysis and the analysis of variance, as it invalidates ... ISBN 978-0-07-337577-9. Kmenta, Jan (1986). Elements of Econometrics (Second ed.). New York: Macmillan. pp. 269-298. ISBN 978-0 ... if all its random variables have the same finite variance. This is also known as homogeneity of variance. The complementary ... Thus, regression analysis using heteroscedastic data will still provide an unbiased estimate for the relationship between the ...
https://en.wikipedia.org/wiki/Homoscedasticity_and_heteroscedasticity
Cantor setCantor set
As to cardinality, almost all elements of the Cantor set are not endpoints of intervals, nor rational points like 1/4. The ... The ternary representation of these fractions terminates (i.e., is finite) or - recall from above that proper ternary fractions ... The "universal" property has important applications in functional analysis, where it is sometimes known as the representation ... All these endpoints are proper ternary fractions (elements of Z ⋅ 3 − N 0 {\displaystyle \mathbb {Z} \cdot 3^{-\mathbb {N} _{0 ...
https://en.wikipedia.org/wiki/Cantor_set
Flip-flop (electronics)Flip-flop (electronics)
In the special cases of 1-of-3 encoding, or multi-valued ternary logic, such an element may be referred to as a flip-flap-flop ... When used in a finite-state machine, the output and next state depend not only on its current input, but also on its current ... State Space Analysis, Stability and Robustness. Springer. pp. 63-64. ISBN 9783540264101. Farhat, Hassan A. (2004). Digital ... Flip-flops and latches are used as data storage elements. A flip-flop is a device which stores a single bit (binary digit) of ...
https://en.wikipedia.org/wiki/Flip-flop_(electronics)
CapacitorCapacitor
Fourier analysis allows any signal to be constructed from a spectrum of frequencies, whence the circuit's reaction to the ... They can also be used in charge pump circuits as the energy storage element in the generation of higher voltages than the input ... The capacitor therefore has a finite parallel resistance, and slowly discharges over time, which may vary greatly depending on ... The usual methods of network analysis can then be applied. In other cases, such as with breakdown voltage, the effect is non- ...
https://en.wikipedia.org/wiki/Capacitor
Modern searches for Lorentz violationModern searches for Lorentz violation
1997). "Bayesian analysis of the polarization of distant radio sources: Limits on cosmological birefringence". Physical Review ... It is generally assumed that neutrino oscillations require a certain finite mass. However, oscillations could also occur as a ... level by examining Keplerian orbital elements of a test particle acted upon by Lorentz-violating gravitomagnetic accelerations ... method and analysis see, discussion e.g.). Besides terrestrial tests also astrometric tests using Lunar Laser Ranging (LLR), i. ...
https://en.wikipedia.org/wiki/Modern_searches_for_Lorentz_violation
Parametric determinismParametric determinism
A synthesis cannot be achieved without a preceding analysis. So dialectical analysis is not a "philosopher's stone" that ... but also with those elements from the past which are contained in the present and elements that point to the future. It ... While the past and the present rule out some courses of action, a human choice is always possible between a finite number of ... In historical analysis and portrayals, the analytical challenge is to understand what part of a course of events is ...
https://en.wikipedia.org/wiki/Parametric_determinism
Dermal boneDermal bone
... a biomechanical model based on a finite element analysis". Paleobiology. 45 (1): 182-200. doi:10.1017/pab.2018.48. S2CID ...
https://en.wikipedia.org/wiki/Dermal_bone
Real closed fieldReal closed field
... such that every element of L is less than every element of U, there is an element x in F with x larger than every element of L ... It is not an ultrapower but it is a hyperreal field, and hence a suitable field for the usages of nonstandard analysis. It can ... F is not algebraically closed, but its algebraic closure is a finite extension. F is not algebraically closed but the field ... There is a total order on F making it an ordered field such that, in this ordering, every positive element of F has a square ...
https://en.wikipedia.org/wiki/Real_closed_field
Constantine A. BalanisConstantine A. Balanis
doi:10.1109/74.997945 A. C. Polycarpou, P. A. Tirkas and C. A. Balanis, "The finite-element method for modeling circuits and ... Antenna Theory: Analysis and Design (2016, 2005, 1997, 1982), John Wiley & Sons, Publishers, Inc., New York. The book has been ... P. A. Tirkas and C. A. Balanis, "Finite-difference time-domain method for antenna radiation," in IEEE Transactions on Antennas ... doi:10.1109/8.135478 S. V. Georgakopoulos, C. R. Birtcher, C. A. Balanis and R. A. Renaut, "Higher-order finite-difference ...
https://en.wikipedia.org/wiki/Constantine_A._Balanis
Head-directionality parameterHead-directionality parameter
In more traditional analysis the entire phrase (including any elements denoting tense or aspect) is considered to be simply a ... In a finite verb phrase (or tense/aspect phrase) the verb (tense/aspect) is initial, although it may move to final position in ... In the following example, the non-finite verb phrase es finden is head-final, whereas in the tensed main clause ich werde es ... In the tense phrase in (b), the tense-marking element (T) precedes its verb phrase (VP) complement. (The subject of the tense ...
https://en.wikipedia.org/wiki/Head-directionality_parameter
Robin boundary conditionRobin boundary condition
J. E. Akin (2005). Finite Element Analysis with Error Estimators: An Introduction to the FEM and Adaptive Error Analysis for ... ISBN 3-540-00889-6. Atkinson, Kendall E.; Han, Weimin (2001). Theoretical numerical analysis: a functional analysis framework. ... ISBN 0-521-56738-6. Mei, Zhen (2000). Numerical bifurcation analysis for reaction-diffusion equations. Berlin; New York: ...
https://en.wikipedia.org/wiki/Robin_boundary_condition
Global/local finite element analysis for textile composites - NASA Technical Reports Server (NTRS)Global/local finite element analysis for textile composites - NASA Technical Reports Server (NTRS)
Global/local methodology combined with special macro elements is proposed herein as a practical alternative. Initial tests ... Conventional analysis of textile composites is impractical because of the complex microstructure. ... Global/local finite element analysis for textile composites. Conventional analysis of textile composites is impractical because ... Global/local methodology combined with special macro elements is proposed herein as a practical alternative. Initial tests ...
https://ntrs.nasa.gov/citations/19930050048
Finite Element Analysis of Compressor Valve Dynamics by S. Akella, N. J. Rao et al."Finite Element Analysis of Compressor Valve Dynamics" by S. Akella, N. J. Rao et al.
By S. Akella, N. J. Rao, E. V. Venugopal, et al., Published on 01/01/88
https://docs.lib.purdue.edu/icec/634/
Finite Element Analysis (FEA) engineering Forum - Eng-TipsFinite Element Analysis (FEA) engineering Forum - Eng-Tips
Professional forum and technical support for engineers for Finite Element Analysis (FEA) engineering. Includes problem solving ... Finite Element Analysis (FEA) engineering. (36027 members). forum727 - Professional forum and technical support for engineers ... Creep and Shrink Analysis is Successful for Solid Section but Unsuccessful for Hollow Section. ... Creep and Shrink Analysis is Successful for Solid Section but Unsuccessful for Hollow Section. ...
https://www.eng-tips.com/threadminder.cfm?pid=727&page=6
Applying finite element analysis to industrial problems - Swansea UniversityApplying finite element analysis to industrial problems - Swansea University
Find out more about the Economic benefits of finite element/discrete element analysis applied to industrial problems. ... Our internationally-leading computational research work, concerned with finite element/discrete element analysis, has made a ...
https://www.swansea.ac.uk/science-and-engineering/research/engineering/impact/benefits-of-finite-element-analysis/
Design, Analysis and Optimization of Engine Mounting Bracket for SAE Supra Car Using Finite Element AnalysisDesign, Analysis and Optimization of Engine Mounting Bracket for SAE Supra Car Using Finite Element Analysis
... 2020-28-0374. ... Analysis and Optimization of Engine Mounting Bracket for SAE Supra Car Using Finite Element Analysis," SAE Int. J. Adv. & Curr ... The current paper discusses the modelling of bracket in Catia, Static and Modal Analysis of bracket was carried out in FEAST ... By careful designing and analysis of engine mounting bracket we can mitigate the vibration produced in the vehicle. ...
https://www.sae.org/publications/technical-papers/content/2020-28-0374/
Finite Element Analysis in MATLAB, Part 1: Structural Analysis Using Finite Element Method in MATLAB Video - MATLABFinite Element Analysis in MATLAB, Part 1: Structural Analysis Using Finite Element Method in MATLAB Video - MATLAB
Learn how to perform structural analysis using the finite element method in MATLAB with Partial Differential Equation Toolbox. ... Finite Element Analysis in MATLAB, Part 1: Structural Analysis Using Finite Element Method in MATLAB. From the series: Finite ... We will be using the model object later on to set up the analysis. In a typical finite element analysis workflow, we go through ... One of the most popular approaches for doing structural analysis is using the finite element method (FEM). Learn how to perform ...
https://www.mathworks.com/videos/finite-element-analysis-in-matlab-part-1-structural-analysis-using-finite-element-method-in-matlab-1600851689410.html
Scan and Solve Finite Elements Analysis simulation Classic Pilot Cutter structure - Scan-and-Solve for RhinoScan and Solve Finite Elements Analysis simulation Classic Pilot Cutter structure - Scan-and-Solve for Rhino
Scan and Solve Finite Elements Analysis simulation Classic Pilot Cutter structure the hull and deck framing structure has been ... Scan and Solve Finite Elements Analysis simulation Classic Pilot Cutter structure. *Added by Andrei Rochian on July 1, 2019 at ... Scan and Solve Finite Elements Analysis simulation Classic Pilot Cutter structure the hull and deck framing structure has been ... Finite Elements Analysis Studies of the wood stru…. * Structural analysis of furniture for woodworkers…. ...
http://www.scan-and-solve.com/video/scan-and-solve-finite-elements-analysis-simulation-classic-pilot?xg_source=activity
finite element analysis (FEA) Archives - IEEE Transactions on Biomedical Engineering (TBME)finite element analysis (FEA) Archives - IEEE Transactions on Biomedical Engineering (TBME)
Computational Study on the Thermal Effects of Implantable Magnetic Stimulation Based on Planar Coils https://www.embs.org/tbme/wp-content/uploads/sites/19/2015/12/B16-01304image1.gif 170 177 IEEE Transactions on Biomedical Engineering (TBME) IEEE Transactions on Biomedical Engineering (TBME) //www.embs.org/tbme/wp-content/uploads/sites/19/2022/06/ieee-tbme-logo2x.png ...
https://www.embs.org/tbme/articles/tag/finite-element-analysis-fea/
British Library EThOS: Finite element analysis of fluid-structure interaction in turbomachinesBritish Library EThOS: Finite element analysis of fluid-structure interaction in turbomachines
Finite element analysis of fluid-structure interaction in turbomachines Author: Franco, Flavio Jose Borges Fortes ISNI: 0000 ...
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.508888
Finite Element Analysis of Subsea Pipelines subjected to Underwater Explosion | FugroFinite Element Analysis of Subsea Pipelines subjected to Underwater Explosion | Fugro
To assess the safety of pipelines exposed to an underwater explosion, finite element analyses are performed to predict the ... In this paper, a finite element model is presented to simulate the transient response of a subsea pipeline subjected to an ...
https://www.fugro.com/about-fugro/our-expertise/research-and-development/technical-papers/technical-papers-details/finite-element-analysis-of-subsea-pipelines-subjected-to-underwater-explosion
Experimental, Mathematical and Finite Element Analysis (FEA) of Temperature Distribution through Rectangular Fin with Circular...Experimental, Mathematical and Finite Element Analysis (FEA) of Temperature Distribution through Rectangular Fin with Circular...
... experimentally and its validity through finite element analysis for its temperature distribution along the length. From the ... Finite Element Analysis (FEA). Element types used for the analysis are: SOLID70 element and SURF152 element. The steps involved ... Experimental, Mathematical and Finite Element Analysis (FEA) of Temperature Distribution through Rectangular Fin with Circular ... Hemanth, J. (2017) Experimental, Mathematical and Finite Element Analysis (FEA) of Temperature Distribution through Rectangular ...
https://scirp.org/journal/paperinformation.aspx?paperid=77833
MATLAB Codes for Finite Element Analysis | Ebook | Ellibs EbookstoreMATLAB Codes for Finite Element Analysis | Ebook | Ellibs Ebookstore
MATLAB Codes for Finite Element Analysis - Author: Ferreira, A. J. M. - Price: 87,95€ ... 8. Analysis of 3D frames. 9. Analysis of grids. 10. Analysis of Timoshenko beams. 11. Plane stress. 12. Analysis of Mindlin ... MATLAB Codes for Finite Element Analysis. 87,95€. Add to cart. Ebook, PDF with Adobe DRM. ISBN: 9781402092008. DRM Restrictions ... A First Introduction to the Finite Element Analysis Program MSC Marc/Mentat. Öchsner, Andreas ...
https://www.ellibs.com/book/9781402092008/matlab-codes-for-finite-element-analysis
Finite Element Analysis Archives - Nor-TechFinite Element Analysis Archives - Nor-Tech
FEA (Finite Element Analysis) Accelerates Work in HPC with Tesla GPUs. May 30, 2013. ... Nor-Tech is Delivering HPC Clusters with Simulia Abaqus FEA (Finite Element Analysis) Integrated. May 10, 2013. ...
https://www.nor-tech.com/tag/finite-element-analysis/
Finite Element Analysis of Stimulated Brillouin Scattering in Integrated Photonic WaveguidesFinite Element Analysis of Stimulated Brillouin Scattering in Integrated Photonic Waveguides
... Björn C. P. Sturmberg, Kokou ... "Finite Element Analysis of Stimulated Brillouin Scattering in Integrated Photonic Waveguides," J. Lightwave Technol. 37, 3791- ... We describe a finite element algorithm for modeling stimulated Brillouin scattering in optical waveguides of arbitrary cross- ...
https://opg.optica.org/jlt/abstract.cfm?uri=jlt-37-15-3791
Femap finite element modeling, simulation, and analysis toolFemap finite element modeling, simulation, and analysis tool
CAD independent finite element modeling and simulation to create, edit, and analyze finite element models. ... and modify finite element models. Simcenter Femap is a premier CAD- and solver-independent finite element analysis (FEA) ... Optimize product designs to speed product development, improve quality, and save on material costs with powerful finite element ... Post-Processing for Easy Results Analysis. View and analyze results and output data to gain a thorough understanding of how a ...
https://www.mayahtt.com/products/simcenter-femap
FINITE ELEMENT ANALYSIS OF REINFORCED CONCRETE
... CRACKING, CRUSHING, AND YIELDING OF REINFORCED CONCRETE BEAMS IS INVESTIGATED ... BY THE FINITE ELEMENT TECHNIQUE. THREE-DIMENSIONAL, 20-NODE ISOPARAMETRIC ELEMENTS ARE USED. THE ANALYSIS INCORPORATES THE ... TRT Terms: Beams; Crushing; Elastoplasticity; Finite element method; Fracture mechanics; Reinforced concrete; Reinforcing steel ...
https://trid.trb.org/view/100487
Finite element analysis of the forced oscillations of ship hull formsFinite element analysis of the forced oscillations of ship hull forms
The solutions are obtained with a FORTRAN IV computer program based on the finite element method using isoparametric elements. ... Feasibility study and cost benefit analysis of conference coordinating at the Naval Postgraduate School  Dotson, Angela S.; ... First-order added mass and damping in heave for a semicircular and bulb hull form including finite depth effects are presented ... Second-order solutions for the semi-circular hull form in heave also including finite depth effects are obtained. The solutions ...
https://calhoun.nps.edu/handle/10945/17021
Validation of initial crack propagation under vibration fatigue by Finite Element analysis<...Validation of initial crack propagation under vibration fatigue by Finite Element analysis<...
Magi F, Maio DD, Sever I. Validation of initial crack propagation under vibration fatigue by Finite Element analysis. ... Magi, F, Maio, DD & Sever, I 2017, Validation of initial crack propagation under vibration fatigue by Finite Element analysis ... Validation of initial crack propagation under vibration fatigue by Finite Element analysis. / Magi, Fabrizio; Maio, Dario Di; ... Validation of initial crack propagation under vibration fatigue by Finite Element analysis. In: International Journal of ...
https://research-information.bris.ac.uk/en/publications/validation-of-initial-crack-propagation-under-vibration-fatigue-b
Displacement Patterns in Magnetomotive Ultrasound Explored by Finite Element Analysis<...Displacement Patterns in Magnetomotive Ultrasound Explored by Finite Element Analysis<...
Displacement Patterns in Magnetomotive Ultrasound Explored by Finite Element Analysis. Sandra Sjöstrand, Maria Evertsson, ... Displacement Patterns in Magnetomotive Ultrasound Explored by Finite Element Analysis. / Sjöstrand, Sandra; Evertsson, Maria; ... Displacement Patterns in Magnetomotive Ultrasound Explored by Finite Element Analysis. I: Ultrasound in Medicine and Biology. ... Displacement Patterns in Magnetomotive Ultrasound Explored by Finite Element Analysis. Ultrasound in Medicine and Biology. 2022 ...
https://portal.research.lu.se/sv/publications/displacement-patterns-in-magnetomotive-ultrasound-explored-by-fin
Three-Dimensional Finite Element Formulation and Scalable Domain Decomposition for High Fidelity Rotor Dynamic Analysis -...Three-Dimensional Finite Element Formulation and Scalable Domain Decomposition for High Fidelity Rotor Dynamic Analysis -...
Three-Dimensional Finite Element Formulation and Scalable Domain Decomposition for High Fidelity Rotor Dynamic Analysis ... Three-Dimensional Finite Element Formulation and Scalable Domain Decomposition for High Fidelity Rotor Dynamic Analysis. ... Three-Dimensional Finite Element Formulation and Scalable Domain Decomposition for High Fidelity Rotor Dynamic Analysis. * ... Three-Dimensional Finite Element Formulation and Scalable Domain Decomposition for High Fidelity Rotor Dynamic Analysis. ...
https://vtol.org/store/product/threedimensional-finite-element-formulation-and-scalable-domain-decomposition-for-high-fidelity-rotor-dynamic-analysis-2392.cfm
Australian Steel Institute - Finite element analysis on axial compressive behaviors of high- performance steel stiffened plates...Australian Steel Institute - Finite element analysis on axial compressive behaviors of high- performance steel stiffened plates...
Finite element analysis on axial compressive behaviors of high- performance steel stiffened plates i ... Finite element analysis on axial compressive behaviors of high- performance steel stiffened plates i. ... Finite element analysis on axial compressive behaviors of high- performance steel stiffened plates i ... Free vibration analysis of thin circular cylindrical shell with closure using finite element method ...
https://www.steel.org.au/resources/elibrary/library/finite-element-analysis-on-axial-compressive-behaviors-of-high-performance-steel-stiffened-plates-i/
RUA: Geometrical processing of real data for Finite Element Analysis of historical fortified structuresRUA: Geometrical processing of real data for Finite Element Analysis of historical fortified structures
The use of Finite Elements Analysis (FEA) for ancient structures and artefacts has recently shown great potentialities. The ... Geometrical processing of real data for Finite Element Analysis of historical fortified structures. Please use this identifier ... Geometrical processing of real data for Finite Element Analysis of historical fortified structures. In: González Avilés, Ángel ... Geometrical processing of real data for Finite Element Analysis of historical fortified structures. ...
http://rua.ua.es/dspace/handle/10045/70531?mode=simple
SP-306: Analytical and Finite Element Concrete Material Models - Comparison of Blast Response Analysis of One Way SlabsSP-306: Analytical and Finite Element Concrete Material Models - Comparison of Blast Response Analysis of One Way Slabs
The mission of ACI-ASCE Committee 447 is to develop and report information on the application of finite element analysis ... SP-306: Analytical and Finite Element Concrete Material Models - Comparison of Blast Response Analysis of One Way Slabs Price: ... Finite Element Analysis and Experimental Validation of Reinforced Concrete Single-Mat Slabs Subjected to Blast Loads ... The mission of ACI-ASCE Committee 447 is to develop and report information on the application of finite element analysis ...
https://www.concrete.org/store/productdetail.aspx?ItemID=SP306&Format=DOWNLOAD&Language=English&Units=US_Units
Realistically Improved Finite Element Analysis of Spring Supports in a Nuclear Fuel Spacer Grid | ICONE | ASME Digital...Realistically Improved Finite Element Analysis of Spring Supports in a Nuclear Fuel Spacer Grid | ICONE | ASME Digital...
Realistically Improved Finite Element Analysis of Spring Supports in a Nuclear Fuel Spacer Grid Jae-Yong Kim, Jae-Yong Kim ... Finite Element Analysis Using Nonconforming Mesh J. Comput. Inf. Sci. Eng (September,2008) ... Kim, J, Yoon, K, & Kim, H. "Realistically Improved Finite Element Analysis of Spring Supports in a Nuclear Fuel Spacer Grid." ... Finite Element Solution of Boundary Value Problems: Theory and Computation. Classics in Applied Math, Vol. 35 Appl. Mech. Rev ( ...
https://asmedigitalcollection.asme.org/ICONE/proceedings-abstract/ICONE16/48140/731/328892
Higher-order finite element methods for elliptic problems with interfaces | ESAIM: Mathematical Modelling and Numerical...Higher-order finite element methods for elliptic problems with interfaces | ESAIM: Mathematical Modelling and Numerical...
Mathematical Modelling and Numerical Analysis, an international journal on applied mathematics ... ESAIM: Mathematical Modelling and Numerical Analysis (ESAIM: M2AN). Editors-in-Chief: Raphaèle Herbin and Christian Rohde - ... Higher-order finite element methods for elliptic problems with interfaces∗ Johnny Guzmán1, Manuel A. Sánchez1 and Marcus Sarkis ... A trace finite element method for a class of coupled bulk-interface transport problems ESAIM: M2AN 49 (2015) 1303-1330. ...
https://www.esaim-m2an.org/articles/m2an/abs/2016/05/m2an150096/m2an150096.html
Reliability Analysis of Mechanical Components Using the Stochastic Finite Element Code Permas - RAReliability Analysis of Mechanical Components Using the Stochastic Finite Element Code Permas - RA
... Show simple item record ... Reliability Analysis of Mechanical Components Using the Stochastic Finite Element Code Permas - RA. ...
https://repository.lib.ncsu.edu/handle/1840.20/23547?show=full
Approximating Stochastic Partial Differential Equations with Finite Elements: Computation and AnalysisApproximating Stochastic Partial Differential Equations with Finite Elements: Computation and Analysis
In this thesis fully discrete approximations of such equations are considered, with an emphasis on finite element methods ... The paper also includes an error analysis of an approximation of this equation and an analysis of the weak error, with respect ... The second paper sets up a framework for the analysis of the asymptotic mean square stability, the stability as measured in a ... The fourth paper considers the analysis of the weak error for the approximation of the semilinear stochastic wave equation. In ...
https://research.chalmers.se/publication/513538
What Is Finite Element Analysis? - MATLAB & SimulinkWhat Is Finite Element Analysis? - MATLAB & Simulink
Resources include videos, examples, and documentation covering finite element analysis and other topics. ... Learn how to perform finite element analysis (FEA) in MATLAB. ... Finite Element Analysis in MATLAB, Part 1: Structural Analysis ... Finite Element Analysis of Electrostatically Actuated MEMS Device - Example * Accelerating Finite Element Analysis in MATLAB ... Finite Element Analysis in MATLAB, Part 1: Structural Analysis Using Finite Element Method in MATLAB ...
https://se.mathworks.com/discovery/finite-element-analysis.html
Ordnance Sciences Services | Finite Element Analysis | NTSOrdnance Sciences Services | Finite Element Analysis | NTS
Projectile Design and Analysis with PRODAS. *Projectile Modeling *Mass Properties Analysis. *Aerodynamics Analysis *Spin, Fin ... Nonlinear Structural Analysis: Large Deformation, Hyper-elastic Materials, and Material Plasticity. *Dynamic Analysis For: Time ... "Analysis of Inter-Chamber Energy and Mass Transport in High-Low Pressure Gun Systems" by Ryan Hill and Dr. Logan McLeod ... "Methodology for Transient Thermal Analysis of Machine Gun Barrels Subjected to Burst Firing Schedules" by Ryan Hill and Dr. ...
https://nts.com/services/testing/defense/ordnance-science/

No FAQ available that match "finite element analysis"

Sheppard J. Salon: Finite Element Analysis of Electrical Machines - bei eBook.de
Sheppard J. Salon: Finite Element Analysis of Electrical Machines - bei eBook.de (ebook.de)
Reconfigurable soft body trajectories using unidirectionally stretchable composite laminae | Nature Communications
Reconfigurable soft body trajectories using unidirectionally stretchable composite laminae | Nature Communications (nature.com)
Materials | Free Full-Text | Concurrent Lamination and Tapering Optimization of Cantilever Composite Plates under Shear
Materials | Free Full-Text | Concurrent Lamination and Tapering Optimization of Cantilever Composite Plates under Shear (mdpi.com)
Electronics Theme Crossword Puzzle for December 13, 2020 - RF Cafe
Electronics Theme Crossword Puzzle for December 13, 2020 - RF Cafe (rfcafe.com)
The Science of Footwear | Ravindra S. Goonetilleke | Taylor & Francis
The Science of Footwear | Ravindra S. Goonetilleke | Taylor & Francis (taylorfrancis.com)
Computational Methods in Applied Mathematics Volume 14 Issue 4
Computational Methods in Applied Mathematics Volume 14 Issue 4 (degruyter.com)
Finite Element Analysis of Compressor Valve Dynamics by S. Akella, N. J. Rao et al.
"Finite Element Analysis of Compressor Valve Dynamics" by S. Akella, N. J. Rao et al. (docs.lib.purdue.edu)
Finite Element Analysis in MATLAB, Part 1: Structural Analysis Using Finite Element Method in MATLAB Video - MATLAB
Finite Element Analysis in MATLAB, Part 1: Structural Analysis Using Finite Element Method in MATLAB Video - MATLAB (mathworks.com)
CDC - Mining - Simplified Technique for Performing FEA of Deep Mines - NIOSH
CDC - Mining - Simplified Technique for Performing FEA of Deep Mines - NIOSH (cdc.gov)
Solving Complex Geotechnical Analysis Challenges | Geoengineer.org
Solving Complex Geotechnical Analysis Challenges | Geoengineer.org (geoengineer.org)
Mechanical Engineer with Finite Element Analysis (FEA) Skills Salary in Rochester, New York | PayScale
Mechanical Engineer with Finite Element Analysis (FEA) Skills Salary in Rochester, New York | PayScale (payscale.com)
Professor Eduardo De Souza Neto - Swansea University
Professor Eduardo De Souza Neto - Swansea University (swansea.ac.uk)
BE/MEng in Civil Engineering | University of Limerick
BE/MEng in Civil Engineering | University of Limerick (ul.ie)
Aerospace Engineering | Cal Poly
Aerospace Engineering | Cal Poly (calpoly.edu)
ART 9 SERIE - RCF
ART 9 SERIE - RCF (rcf.it)
MATLAB Codes for Finite Element Analysis | Ebook | Ellibs Ebookstore
MATLAB Codes for Finite Element Analysis | Ebook | Ellibs Ebookstore (ellibs.com)
Dr Evangelia Ganniari Papageorgiou - Staffordshire University
Dr Evangelia Ganniari Papageorgiou - Staffordshire University (staffs.ac.uk)
Engineering Projects & Systems Management Masters (MSc) - Postgraduate degree course - Kingston University London
Engineering Projects & Systems Management Masters (MSc) - Postgraduate degree course - Kingston University London (kingston.ac.uk)
Henry Petroski, Aleksander S. Vesic Distinguished Professor Emeritus
Henry Petroski, Aleksander S. Vesic Distinguished Professor Emeritus (fds.duke.edu)
Freelance SolidWorks Designers & Developers for Hire Online - Guru
Freelance SolidWorks Designers & Developers for Hire Online - Guru (guru.com)
Keyword: cellular column
Keyword: cellular column (easychair.org)
Page Comparison - ANSYS AIM - Bike Crank (v.3 vs v.4) - SimCafe - Dashboard
Page Comparison - ANSYS AIM - Bike Crank (v.3 vs v.4) - SimCafe - Dashboard (confluence.cornell.edu)
Directorio de ubicaciones | SIMULIA™ - Dassault Systèmes®
Directorio de ubicaciones | SIMULIA™ - Dassault Systèmes® (3ds.com)
Nonlinear finite elements - Wikiversity
Nonlinear finite elements - Wikiversity (en.wikiversity.org)
Alain Nussbaumer - People - EPFL
Alain Nussbaumer - People - EPFL (people.epfl.ch)
People ‒ FLEXLAB ‐ EPFL
People ‒ FLEXLAB ‐ EPFL (epfl.ch)
Fundamentals of Mechanical Vibrations | Ebook | Ellibs Ebookstore
Fundamentals of Mechanical Vibrations | Ebook | Ellibs Ebookstore (ellibs.com)
SURF - Research - College of Engineering - Purdue University
SURF - Research - College of Engineering - Purdue University (engineering.purdue.edu)
Copy this link to clipboard
Copy this link to clipboard (spectrum.ieee.org)