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Dissertations / Theses on the topic 'Finite Element Modeling (FEM)'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Adolfsson, Erik. "Simplified finite element bearing modeling : with NX Nastran." Thesis, Uppsala universitet, Tillämpad mekanik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-255398.

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This report was produced at the request of ABB Robotics and the work was conducted at their facilities in Västerås, Sweden. In the development of industrial robots the structures are slimmed to increase the accuracy and speed. When conducting finite element analysis on the robots the accuracy of the component modelling and definitions of the boundary conditions becomes more important. One such component is the ball bearing which consist of several parts and has a nonlinear behavior where the balls are in contact with the rings. The task given was to develop new methods to model roller bearings

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2

Schatt, Nathan A. "Finite Element Modeling of Ultrasonic Wire Bonding on Polyvinyl Acetate-Nanocomposite Substrates." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396634471.

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3

PRASAD, CHANDRA SHEKHAR. "FINITE ELEMENT MODELING TO VERIFY RESIDUAL STRESS IN ORTHOGONAL MACHINING." Thesis, Blekinge Tekniska Högskola, Avdelningen för maskinteknik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3481.

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The aim of this thesis paper, to create a numerical model to examine the residual stresses induced by orthogonal machining in the finished work piece and the model is validated by comparing with experimental result. The finite element method is used to simulate and analyze the residual stresses induced by a orthogonal metal cutting process. A Dynamics explicit time integration technique with Arbitrary Lagrangian Eulerian (ALE) adaptive meshing Finite Element Method (FEM) is employed to simulate the model. The Johnson-Cook material model is used to describe the work material behaviour and fully

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4

Kleiven, Svein. "Finite Element Modeling of the Human Head." Doctoral thesis, KTH, Farkost- och flygteknik, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3347.

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The main objectives of the present thesis were to define the dimension of head injuries in Sweden over a longer period and to present a Finite Element (FE) model of the human head which can be used for preventive strategies in the future. The annual incidence of head injuries in Sweden between 1987 and 2000 was defined at over 22 000, cases most of which were mild head injuries. In contrast to traffic accidents, head injuriy due to fall was the most important etiology. Of special interest was that the number of hematoma cases has increased. A detailed and parameterized FE model of the human he

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Kleditzsch, Stefan, and Birgit Awiszus. "Modeling of Cylindrical Flow Forming Processes with Numerical and Elementary Methods." Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-97124.

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With flow forming – an incremental forming process – the final geometry of a component is achieved by a multitude of minor sequential forming steps. Due to this incremental characteristic associated with the variable application of the tools and kinematic shape forming, it is mainly suitable for small and medium quantities. For the extensive use of the process it is necessary to have appropriate simulation tools. While the Finite-Element-Analysis (FEA) is an acknowledged simulation tool for the modeling and optimization of forming technology, the use of FEA for the incremental forming processe

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6

Johansson, Robert. "Finite element modeling of straightening of thin-walled seamless tubes of austenitic stainless steel." Thesis, Högskolan Dalarna, Materialteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:du-21463.

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During this thesis work a coupled thermo-mechanical finite element model (FEM) was builtto simulate hot rolling in the blooming mill at Sandvik Materials Technology (SMT) inSandviken. The blooming mill is the first in a long line of processes that continuously or ingotcast ingots are subjected to before becoming finished products. The aim of this thesis work was twofold. The first was to create a parameterized finiteelement (FE) model of the blooming mill. The commercial FE software package MSCMarc/Mentat was used to create this model and the programing language Python was used toparameterize

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Bach, Dang Phong. "Development of a finite element strategy for the modeling of nano-reinforced materials." Thesis, Compiègne, 2020. http://bibliotheque.utc.fr/EXPLOITATION/doc/IFD/2020COMP2550.

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La modélisation des matériaux nano-renforcés nécessite de prendre en compte l’effet de taille induit par les phénomènes locaux à l’interface entre la nanoinclusion et la matrice. Cet effet de taille est interprété par une augmentation du rapport interface/volume et peut être pris en compte en introduisant une élasticité surfacique à l’interface. Alors que de nombreux travaux ont été développés du point de vue analytique, peu de contributions ont trait à la description numérique et à la mise en œuvre de cette élasticité surfacique dans la méthode des éléments finis (FEM). Nos études visent à dé

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8

Zhu, Zimo. "Techniques for Finite Element Modeling and Remodeling of Bones with Applications to Pig Skulls." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1512045879980572.

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9

PADUR, DIVYACHAPAN SRIDHARAN. "DEVELOPMENT AND TESTING OF AN ENHANCED PREPROCESSOR FOR CREATING 3D FINITE ELEMENT MODELS OF HIGHWAY BRIDGES AND A POST PROCESSOR FOR EFFICIENT RESULT GENERATION." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1078472870.

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10

Zula, Daniel Peter. "Design and Finite Element Modeling of a MEMS‐scale Aluminum Nitride (AlN) EnergyHarvester with Meander Spring Feature." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1560261406397638.

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11

Mozzi, Giuliana. "Finite Element Modeling of an Innovative Headband : A study about the headband design and its safety properties." Thesis, KTH, Skolan för teknik och hälsa (STH), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211176.

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One of the most recent challenges faced worldwide is the so-called “ageing population” phenomenon. Besides the disabilities and illnesses that the elderly is prone to, traumatic brain injuries represent a common and potentially fatal factor that greatly affects this population. Other subjects are however also likely to experience traumatic brain injuries i.e. people affected by some kinds of diseases and disorders such as epilepsy and dementia that are known to have a high risk of falling. Furthermore, sports accidents can also lead to traumatic brain injuries, for example cycling. Current sol

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12

Fan, Ang-Xiao. "Geometric and numerical modeling of facial mimics derived from Magnetic Resonance Imaging (MRI) using Finite Element Method (FEM)." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2307.

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Le visage humain joue un rôle important dans la communication interpersonnelle. La dysfonction du visage ou le défigurement due aux traumatismes ou pathologies peuvent entraver les activités sociales normales. Le traitement chirurgical est souvent nécessaire. De nos jours, le résultat du traitement chirurgical et l’état d’établissement ne sont estimé qu’avec les méthodes qualitatives telles que l’observation visuelle et la palpation. Dans l’attente de fournir des critères quantitatifs, cette thèse a pour l’objectif de modéliser la mimique faciale utilisant MEF (Méthode d’Éléments Finis) sur la

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Mitchell, Caleb. "Finite Element Analyses and Proposed Strengthening of a Reinforced Concrete Box Girder Bridge Subjected to Differential Settlement." Thesis, Kansas State University, 2018. http://hdl.handle.net/2097/38789.

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Master of Science<br>Department of Civil Engineering<br>Hayder A. Rasheed<br>The Kansas Department of Transportation’s (KDOT) Bridge 059-045 is a reinforced concrete box girder bridge constructed in 1965 to connect the rural Shawnee Drive across Interstate 135 near McPhearson, Kansas, in between Salina and Wichita. The bridge was observed, during an annual inspection in 1998, to have experienced some settlement, which was further found to be due to its proximity to a sinkhole. This settlement progressed to noticeable levels in 2012 necessitating a semi-annual elevation profile survey that was

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Pothapragada, Raja Mahesh. "FEM of nanoindentation on micro- and nanocrystalline Ni: Analysis of factors affecting hardness and modulus values." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4844/.

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Nanoindentation is a widely used technique to measure the mechanical properties of films with thickness ranging from nanometers to micrometers. A much better understanding of the contact mechanics is obtained mostly through finite element modeling. The experiments were modeled using the software package Nano SP1 that is based on COSMOSM (Structural Research & Analysis Corp, www.cosmosm.com), a finite element code. The fundamental material properties affecting pile-up are the ratio of the effective modulus to yield stress Eeff/σ and the work hardening behavior. Two separate cases of work harde

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Myers, Eric J. "Finite Element Modeling (FEM) of Porous Additively Manufactured Ferromagnetic Shape Memory Alloy Using Scanning Electron Micrograph (SEM) Based Geometries." Youngstown State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ysu149399154152881.

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Pablos, Rabano Alejandro. "Modeling of a PMSynRel stator with concentrated windings using FEM and non-linear reluctance networks." Thesis, KTH, Elektrisk energiomvandling, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124543.

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Permanent magnets synchronous reluctance (PMSynRel) motors are attractive due to their high torque density and because a lower quantity of permanent magnets is necessary in comparison with other permanent magnet machines. This thesis deals with the analysis of PMSynRel machines using a finite element method (FEM) and reluctance networks. First, a PMSynRel machine model is built in order to carry out simulations using a finite element method package. The effect of different design parameters such as the combination of the number of poles and slots, the number of flux barriers or the number of m

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17

Qiqi, Kristos. "Finite Element Approximation of a Moving Boundary Problem Arising in the Modeling of the Spin Coating Process for Thin Films." Thesis, Karlstads universitet, Institutionen för matematik och datavetenskap (from 2013), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-78234.

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Using the Navier-Stokes equations along with a continuity equation, a one-dimensional model is developed to describe the spin coating process of thin polymeric films. The resulting model is a system of a parabolic partial differential equation coupled with an integral equation as well as with an ordinary differential equation describing the motion of a moving boundary. Viscosity and diffusivity are allowed to be varied in the model. To be able to perform the finite element approximation of the model equations, the moving boundary is fixed. Then the finite element method is applied along with t

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18

Anwar, Aamir. "Low Frequency Finite Element Modeling of Passive Noise Attenuation in Ear Defenders." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/31186.

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Noise levels in areas adjacent to high performance jets have increased monotonically in the past few years. When personnel are exposed to such high noise fields, the need for better hearing protection is inevitable. Adequate hearing protection may be achieved through the use of circumaural ear defenders, earplugs or both. This thesis focuses on identifying the dominant physical phenomena, responsible for the low frequency (0 â 300 Hz) acoustic response inside the earmuffs. A large volume earcup is used with the undercut seal for the study. The significance of this research is the use o

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Scarton, Alessandra. "COMBINING MUSCULOSKELETAL MODELING AND FEM IN DIABETIC FOOT PREVENTION." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3427130.

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Recently the development of Patient-specific models (PSMs) tailored to patient-specific data, has gained more and more attention in clinical applications. PSMs could represent a solution to the growing awareness of personalized medicine which allow the realization of more effective rehabilitation treatments designed on the subject capabilities. PSMs have the potential of improving diagnosis and optimizing clinical treatments by predicting and comparing the outcomes of different approaches of intervention. Furthermore they can provide information that cannot be directly measured, such as muscle

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20

Frem, Leonardo A. "Hall Effect Modeling in FEM Simulators and Comparison to Experimental Results in Silicon and Printed Sensors." DigitalCommons@CalPoly, 2016. https://digitalcommons.calpoly.edu/theses/1618.

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Finite element method simulation models for thin-film semiconductor-based Hall sensors were developed using secondary data in order to understand their behavior under strong magnetic fields. Given a device geometry and charge carrier density and mobility, the models accurately calculated sensor resistance, Hall voltage under a normally-incident constant magnetic field, and expected offset from a population of Hall devices. The model was successfully matched against data from integrated chip Hall sensors from St. Jude Medical. Additionally, the feasibility of creating Hall effect devices with c

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Martinho, Lucas Blattner. "Numerical modeling of electromagnetic coupling phenomena in the vicinities of overhead power transmission lines." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3143/tde-28062016-152807/.

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Les phénomènes de couplage électromagnétique entre les lignes aé- riennes de transmission d\'énergie et des structures voisines sont inévitables, surtout dans les zones densément peuplées. Les effets indésirables découlants de cette proximité sont variés, allant de l\'établissement des tensions dangereuses à l\'apparition de phénomènes de corrosion dus au courant alternatif. L\'étude de cette classe de problèmes est nécessaire pour assurer la sécurité dans les alentours de la zone d\'interaction et aussi pour préserver l\'intégrité des équipements et des dispositifs présents. Cependant, la mod

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22

Grasso, Eva. "Modelling visco-elastic seismic wave propagation : a fast-multipole boundary element method and its coupling with finite elements." Phd thesis, Université Paris-Est, 2012. http://tel.archives-ouvertes.fr/tel-00730752.

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The numerical simulation of elastic wave propagation in unbounded media is a topical issue. This need arises in a variety of real life engineering problems, from the modelling of railway- or machinery-induced vibrations to the analysis of seismic wave propagation and soil-structure interaction problems. Due to the complexity of the involved geometries and materials behavior, modelling such situations requires sophisticated numerical methods. The Boundary Element method (BEM) is a very effective approach for dynamical problems in spatially-extended regions (idealized as unbounded), especially s

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Elfridsson, Jon. "3D parameterized FEM modelling of a piston ring in a marine diesel engine : a simulation approch using FEM." Thesis, Umeå universitet, Institutionen för fysik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-38315.

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The piston ring in a marine two-stroke diesel engine operates in demanding conditions, involving high temperatures and pressures. Its main purposes are to seal the combustion chamber of the engine, minimize the frictional contact against the cylinder liner and transfer heat from the piston. The development of new piston ring designs for marine diesel engines is mainly based on engineering knowledge and expertise but is somewhat unstructured. A new method which may be used to overcome this lack of structure is to simulate the working conditions for the piston ring. This is the main objective of

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PIOVANO, GIOVANNA. "Combined finite-discrete element modelling of key instabilities which characterise deep-seated landslides from massive rock slope failure." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2502740.

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The expression “landslide from massive rock slope failure” (MRSF) is used to indicate large-scale landslides characterised by a variety of complex initial failure processes and unpredictable postfailure behaviour. In this context, deep-seated landslides are classified as “landslides from massive rock slope failure”. Typically, deep-seated landslides are slow mountain deformations which may involve movement along discrete shear surfaces and deep seated mass creep. The long-term development of deep-seated slope deformations creates suitable conditions for the subsequent occurrence of other slop

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Yilmaz, Oguz. "Detailed Fem Analysis Of Two Different Splice Steel Connections." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609895/index.pdf.

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Beam splices are typically located at moment contraflexure points (where M=0). Most design specifications require these splices to develop a strength either to meet design forces or a minimum value set by specifications. The design forces are typically determined through elastic analysis, which does not include flexibility of splice connections. In this research, two types of splice connections, an extended end plate splice connection and a flange and web plate bolted splice connection, were tested and analyzed to investigate the effect of the partial strength splice connections on structural

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Livingston, Richard Verile. "Comparison of Heat Generation Models in Finite Element Analysis of Friction Welding." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7686.

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Finite element models of friction welding can be used to estimate internal conditions of welds which are useful for weld analysis and developing experimental welding procedures. Many modeling techniques are used to accomplish these goals, each with relative strengths and weaknesses. A comparative analysis of friction welding models using different heat generation methods is presented. The three different heat generation methods examined were viscoplastic friction, constant steady-state generation, and experimentally measured power data. The models were compared against each other using three o

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Mazor, Alon. "Modelling of roll compaction process by finiite element method." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2017. http://www.theses.fr/2017EMAC0009/document.

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Dans l’industrie pharmaceutique, la granulation sèche par compactage à rouleaux est un procédé d’agglomération de poudres en granulés pour améliorer les propriétés d’écoulement nécessaire pour le procédé de compression en matrice. Comprendre le procédé de compactage à rouleaux et optimiser l’efficacité de production est limitée par l’utilisation de l’approche expérimentale à cause du coût élevé des poudres, le temps des essais et la complexité du procédé. Dans ce travail, une méthode d’éléments finis en 3D, est développée dans le but d’identifier les paramètres critiques du matériau et du proc

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Almahmoud, Omar H. M. "Design Optimization of Functionalized Silica-Polymer Nanocomposite through Finite Element and Molecular Dynamics Modeling." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1707245/.

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This dissertation focuses on studying membrane air dehumidification for a membrane moisture exchanger in a membrane heat pump system. The study has two parts: an optimization of membrane moisture exchanger for air dehumidification in the macroscale, and diffusion of water vapor in polymer nanocomposites membrane for humid air dehumidification in the nanoscale. In the first part of the research, the mass transport of water vapor molecules through hydrophilic silica nanochannel chains in hydrophobic polyurethane matrix was studied by simulations and experiments for different membrane moisture ex

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Mkhonta, Sizwe. "Development of a finite element matrix (fem)three-phase three-limb transformer model for Geomagnetically Induced Currents (GIC) experiments." Master's thesis, Faculty of Engineering and the Built Environment, 2020. http://hdl.handle.net/11427/32805.

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Geomagnetically Induced Currents (GIC) have been a growing concern within power system operators and researchers as they have been widely reported to lead to power system related issues and material damage to system components like power transformers. In power transformers, GIC impacts are evidenced by part-wave saturation, resulting in transformers experiencing increased presence of odd and even harmonics. The three-phase three-limb (3p3L) transformer has been found to be the most tolerant to high dc values compared to other core types. The research was based on a hypothesis which reads “tran

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Liu, Chih-Hsing. "A finite element based dynamic modeling method for design analysis of flexible multibody systems." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/39605.

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This thesis develops a finite element based dynamic modeling method for design and analysis of compliant mechanisms which transfer input force, displacement and energy through elastic deformations. Most published analyses have largely based on quasi-static and lump-parameter models neglecting the effects of damping, torsion, complex geometry, and nonlinearity of deformable contacts. For applications such as handling of objects by the robotic hands with multiple high-damped compliant fingers, there is a need for a dynamic model capable of analyzing the flexible multibody system. This research

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31

Kokkinos, Filis-Triantaphyllos T. "Three-dimensional layerwise modeling of layered media with boundary integral equations." Diss., This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-02132009-170805/.

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Lucassen, Mattheüs. "Infuence of the modelling of truss joints made of hollow tube sections in finite element models." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263912.

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Several boom segments form the crane boom. These segments are often truss structures formed out of circular hollow sections, which are welded together forming the truss joints. A adequate modelling of these truss joints is very important for operational strength and life. Due to the large boom sizes, efficient models are used in the finite element method, generally built of beam elements. These models have problems capturing the proper bending moments working in the truss joints. This is caused by a insufficient portrayal of the joint stiffness. In the literature several modelling techniques w

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Liu, Deqi. "Thermomechanical modeling of the solidification process of an aqueous urea solution." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI029.

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De nombreux liquides subissent un changement de volume lorsqu'ils gèlent. Pour l'eau et certaines solutions aqueuses, l'expansion volumétrique au cours de la solidification peut entraîner une série de problèmes mécaniques. Dans l'industrie automobile, l'expansion de changement de phase (ECP) met en cause la sécurité des réservoirs des véhicules aux saisons froides. Une des questions les plus problématiques est l'expansion de la solution aqueuse d'urée (SAU) dans le réservoir du système SCR des véhicules diesels. Lorsque le liquide gèle, les composants intérieurs ainsi que le réservoir lui-même

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Videla, Marió Javier Andrés. "Fracture modelling directly from computer-aided design (CAD) by the extended isogeometric finite element method (X-IGA FEM) with trimmed nurbs." Tesis, Universidad de Chile, 2017. http://repositorio.uchile.cl/handle/2250/146434.

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Ingeniero Civil Mecánico<br>Tanto los software de Diseño Asistido por Computadora (CAD) como las herramientas de análisis por medio del Método de Elementos Finitos (FEM) han tenido un enorme impacto en la actividad ingenieril en las últimas décadas. Aun así, tienen la desventaja de que las geometrías CAD no son directamente compatibles con las geometrías utilizas en FEM, lo cual resulta en la necesidad de re-mallar la geometría varias veces durante un ciclo de soluciones FEM. Para solucionar esto, IGA ha sido propuesto como una metodología capaz de generar un vínculo directo entre el diseño me

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Hutten, Victoria Elizabeth. "Process Modeling of Thermoplastics and Thermosetting Polymer Matrix Composites (PMCs) Manufactured Using Fused Deposition Modeling (FDM)." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1513073294210094.

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Schiefer, Matthew Anthony. "Optimized Design of Neural Interfaces for Femoral Nerve Clinical Neuroprostheses: Anatomically-Based Modeling and Intraoperative Evaluation." Cleveland, Ohio : Case Western Reserve University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1237683232.

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Merlo, García Ramón. "Glass-fibre reinforcement on steel to timber connections. : A parametric study through FEM modelling on double-shear single-dowelled connections." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-66848.

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In a context where timber is gaining popularity as a building material and glass-fibre reinforced composites (GFRC) are becoming more accessible in a wide variety of formats, it is considered appropriate to reconsider the combination of these two materials. Additionally, given the increasing use of laminated timber elements where stiffness and strength are better controlled, attention is drawn back to the connection between elements. For these reasons, it is considered of interest to study reinforcing possibilities for connections within timber structures. This work consists in a parametric st

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Bolmsvik, Åsa. "Structural-acoustic vibrations in wooden assemblies: : Experimental modal analysis and finite element modelling." Doctoral thesis, Linnéuniversitetet, Institutionen för bygg- och energiteknik (BE), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-24562.

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This doctoral thesis concerns flanking transmission in light weight, wooden multi-storey buildings within the low frequency, primarily 20-120 Hz. The overall aim is to investigate how the finite element method can contribute in the design phase to evaluate different junctions regarding flanking transmission. Two field measurements of accelerations in light weight wooden buildings have been evaluated. In these, two sources; a stepping machine, and an electrodynamic shaker, were used. The shaker was shown to give more detailed information. However, since a light weight structure in field exhibit

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Szegda, Damian. "Experimental investigation and computational modelling of the thermoforming process of thermoplastic starch." Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/3445.

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Plastic packaging waste currently forms a significant part of municipal solid waste and as such is causing increasing environmental concerns. Such packaging is largely non-biodegradable and is particularly difficult to recycle or to reuse due largely to its complex compositions. Apart from limited recycling of some easily identifiable packaging wastes that can be separated economically, such as bottles, most packaging waste ends up in landfill sites. In recent years, in an attempt to address this problem in plastic packaging, the development of packaging materials from renewable plant resource

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Zeng, Sai. "Knowledge-based FEA Modeling Method for Highly Coupled Variable Topology Multi-body Problems." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4772.

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The increasingly competitive market is forcing the industry to develop higher-quality products more quickly and less expensively. Engineering analysis, at the same time, plays an important role in helping designers evaluate the performance of the designed product against design requirements. In the context of automated CAD/FEA integration, the domain-dependent engineers different usage views toward product models cause an information gap between CAD and FEA models, which impedes the interoperability among these engineering tools and the automatic transformation from an idealized design model

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Sylliaasen, Scott J. "The Development and Validation of a Finite Element Model of a Canine Rib For Use With a Bone Remodeling Algorithm." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/415.

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Studies are currently being performed to determine the effects of bisphosphonate treatments on the structure and density of bone tissue. One of the pathways for gaining a better understanding of the effects of this and other treatments involves creating a computer simulation. Theory suggests that bone tissue structure and density are directly related to the manner in which the tissue is loaded. Remodeling is the process in which bone tissue is resorbed in areas of low stress distributions, and generated in areas of high stress distributions. Previous studies have utilized numerical methods

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Willis, Brice Matthew. "Applying Finite Element Analysis with a Focus on Tensile Damage Modeling of Carbon Fiber Reinforced Polymer Laminates." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1373887044.

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Wang, Shen. "Modeling and Design of Planar Integrated Magnetic Components." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/34400.

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Recently planar magnetic technologies have been widely used in power electronics, due to good cooling and ease of fabrication. High frequency operation of magnetic components is a key to achieve high power density and miniaturization. However, at high frequencies, skin and proximity effect losses in the planar windings become significant, and parasitics cannot be ignored. This piece of work deals with the modeling and design of planar integrated magnetic component for power electronics applications. First, one-dimensional eddy current analysis in some simple winding strategies is discussed

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Tilton, Gregory J. "Finite Element Modeling of Thermal Expansion in Polymer/ZrW₂O₈ Composites." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1321465255.

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Lu, Fei [Verfasser]. "Induction Machine Control: State Observation, Electromagnetic Analysis, Modeling for Control, Finite Element Simulation, and Rotor Temperature Estimation / Fei Lu." Düren : Shaker, 2021. http://d-nb.info/1240853866/34.

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Sverrisdóttir, Kristín. "Improvements and Validation of THUMS Upper Extremity : Refinements of the Elbow Joint for Improved Biofidelity." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261099.

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Introduction One out of five reported motor vehicle collision injuries occur to the upper extremities. Certain parts of The Total HUman Model for Safety (THUMS) lack validation against experimental data, including the elbow. The aim of this project is to refine and validate the elbow joint of THUMS, with focus on anatomical response of the elbow during axial impact applied to the wrist. Methods Internal contacts in the elbow were modified and new contacts assigned between bones and ligaments of the elbow. The posterior part of the radial- and ulnar collateral ligaments, and joint capsule was i

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Parris, Kadri. "Extension Of Stress-Based Finite Element Model Using Resilient Modulus Material Characterization To Develop A Theoretical Framework for Realistic Response Modeling of Flexible Pavements on Cohesive Subgrades." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437623013.

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Xie, Mengyin. "X-ray and neutron diffraction analysis and fem modelling of stress and texture evolution in cubic polycrystals." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:c5f8b36c-4728-4c17-8e2e-82b926200019.

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The thesis reports improvements in the characterization techniques for stress and texture in crystalline materials by x-ray and neutron powder diffraction. Furthermore, advances are made in texture evolution modelling and validation against experimental observations. In the beginning, the fundamental assumption of diffraction strain analysis is numerically examined and verified, namely, that the lattice parameter value determined from fitting the diffraction pattern is equal to the average lattice parameter within the gauge volume. Next, the task of shear strain determination from powder diffr

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Källgren, Therese. "Investigation and modelling of friction stir welded copper canisters." Doctoral thesis, KTH, Materialvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11999.

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This work has been focused on characterisation of FSW joints, and modelling of the process, both analytically and numerically. The Swedish model for final deposit of nuclear fuel waste is based on copper canisters as a corrosion barrier with an inner pressure holding insert of cast iron. Friction Stir Welding (FSW) is the method to seal the copper canister, a technique invented by The Welding Institute (TWI). The first simulations were based on Rosenthal’s analytical medium plate model. The model is simple to use, but has limitations. Finite element models (FEM) were developed, initially with

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Pongpairote, Asia Nichackarn, and Mariam Bayat. "Arm Injury Prediction withTHUMS SAFER : Improvements of the THUMS SAFER upperextremity." Thesis, KTH, Lättkonstruktioner, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290154.

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Globally, approximately 1.2 million people die each year due to trac accidents. Upperextremity injuries account for 18% to 25% of all car accident injuries. In order to beable to analyze these crash-related injuries, Human body models(HBMs) are used as acomplement to FE simulations. An example of a HBM is the THUMS SAFER that isbased on a 50 percentile American male. The aim of this study was to improve the upperextremity of the THUMS SAFER with respect to Autoliv's requirements to better predictfractures. In addition, this was validated against the Forman experiment(Forman, et al.,The journal

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