Filters








2,971 Hits in 4.1 sec

Strain-Based Regional Nonlinear Cardiac Material Properties Estimation from Medical Images [chapter]

Ken C. L. Wong, Jatin Relan, Linwei Wang, Maxime Sermesant, Hervé Delingette, Nicholas Ayache, Pengcheng Shi
2012 Lecture Notes in Computer Science  
In view of these, we present a physiology-based framework for estimating regional, hyperelastic, and orthotropic material properties.  ...  By using a strainbased objective function which properly reflects the change of material constants, the regional material properties of a hyperelastic and orthotropic constitutive law are estimated using  ...  Nevertheless, the results on the real data show that when the discrepancies between simulations and measurements are large because of the improper tissue structure, active contraction, and boundary conditions  ... 
doi:10.1007/978-3-642-33415-3_76 fatcat:7xyf4o5ytfgftkczs4n7sdxzcu

Numerical analysis of dynamic out-of-plane loading of nonwovens

E Demirci, F Farukh, M Acar, B Pourdeyhimi, V V Silberschmidt
2013 Journal of Physics, Conference Series  
This paper presents finite element (FE) modelling of deformation behaviour of thermally bonded bicomponent fibre nonwovens under out-of-plane dynamic loading.  ...  The deformation behaviour of nonwoven under out-of-plane dynamic loading computed with the numerical model was compared with that observed in the tests.  ...  The susceptibility to deform under out-of-plane dynamic loading is one of the major concerns for various applications of nonwovens such as filters and scaffolds.  ... 
doi:10.1088/1742-6596/451/1/012021 fatcat:dq6celun2zd55hjlnd7bqdygra

Anisotropic creep modeling of coated textile membrane using finite element analysis

Kyoung Ju Kim, Woong-Ryeol Yu, Min Sun Kim
2008 Composites Science And Technology  
To validate the current creep modeling and its implementation in finite element software, off-axis coupon creep tests were re-simulated and compared with the experiments, showing that the present modeling  ...  can describe the anisotropic and nonlinear creep deformation of CTM with acceptable accuracy.  ...  Acknowledgement The authors of this paper would like to thank the Korea Science and Engineering Foundation (KOSEF) for sponsoring this research through the SRC/ERC Program of MOST/KOSEF (R11-2005-065).  ... 
doi:10.1016/j.compscitech.2008.02.011 fatcat:4vatb6qeejccbhov4llnivdxkq

A thick anisotropic plate element in the framework of an absolute nodal coordinate formulation

M. Langerholc, J. Slavič, M. Boltežar
2013 Nonlinear dynamics  
In this research, the incorporation of material anisotropy is proposed for the large-deformation analyses of highly flexible dynamical systems.  ...  The second simulation deals with a static and dynamic analysis of a thick, nonlinearly elastic and orthotropic ANCF plate under a gravitational and external, time-dependent, vector-force loading.  ...  Large deformation of a highly flexible material The aim of the following simulations is to show the static and dynamic responses of the nonlinearly elastic and orthotropic ANCF plate element.  ... 
doi:10.1007/s11071-013-0778-y fatcat:p2gpzsbopzdrnjkfmqv2l2dp6y

Tape winding angle influence on subsea cable sheathing fatigue performance

Luigi Mario Viespoli, Luigi Panza, Audun Johanson, Antonio Alvaro, Aurelio Somà, Filippo Berto
2021 Engineering structures  
Loading conditions as internal pressure related to thermal dielectric expansion and cable bending are modelled.  ...  In the present work a series of finite element simulations are performed in presence of galvanized steel tapes at three different winding angles and without such reinforcement at all, obtaining a qualitative  ...  The armour is made of galvanized steel wires with a thickness of 3 mm and was modelled as an orthotropic material in the same way adopted for the steel tapes.  ... 
doi:10.1016/j.engstruct.2020.111660 fatcat:khtg6vk4dbente4mxecxpxizie

Strain localization in an orthotropic material with plastic spin

Haengsoo Lee, Seyoung Im, S.N. Atluri
1995 International journal of plasticity  
The formation and development of strain localization via shear banding is examined for an orthotropic material for the purpose of studying the effect of the plastic spin and the anisotropy upon the strain  ...  By way of finite element analysis, full numerical solution is next obtained for plane strain block of an elastoviscoplastic material under tension or compression, and the shear band development is simulated  ...  In this article, we are concerned with material instability analysis of an orthotropic elastic-plastic materials and finite element simulation for shear strain localization in an orthotropic elastoviscoplastic  ... 
doi:10.1016/s0749-6419(95)00006-2 fatcat:rvj47uvztfav5douwl355nqwl4

Modelling Cloth Buckling and Drape [article]

J.M.S. Dias, M.N. Gamito, J.M. Rebordao
1998 Eurographics State of the Art Reports  
Dynamic equilibrium is formulated using Newton's 2nd law. We model non-linear elastic material behaviour, by piecewise linear approximation of measured data.  ...  The model is able to represent known elastic behaviour in deformation, such as planar extension and shearing and out-of-plane bending, drape and buckling.  ...  We have extended previous cloth models of in-plane tensile deformation 6 , with the same theoretical framework, by allowing orthotropic material behaviour and piecewise linear approximation of non-linear  ... 
doi:10.2312/egs.19981014 fatcat:afxi7aarhrf6vadq3itefkokoq

Use of Orthotropic Plate Model Dynamics to Design for Endurance of Heat Transfer Plates

Heikki Martikka, Ilkka Pollanen
2013 Mechanical Engineering Research  
In this study results are presented of a study of applying surrogate plate models for dynamic design of structurally orthotropic heat transfer plates.  ...  In this study the orthotropic plate surrogate material approach is chosen. The dynamic behaviors are measured .The surrogate model predictions and measurements agree well.  ...  Plate Parameters The first objective in this section is to develop a methodology for formulating surrogate plate models to simulate accurately enough the dynamic and static behavior of an orthotropic  ... 
doi:10.5539/mer.v3n2p28 fatcat:44xnlxxvivbcxnjj4r24domqui

Finite Element Analysis of High-Speed Machining of CFRP Material [chapter]

K. Gobivel, K. S. Vijay Sekar, G. Prabhakaran
2018 Lecture Notes in Mechanical Engineering  
The FE simulations are carried out and the deformation characteristics and stress patterns of the composite tube are analyzed.  ...  Hence FE studies are imperative in understanding the material deformation characteristics of these lightweight materials.  ...  The main objective of this study is to develop a 2D FE model to simulate the chip formation in orthogonal cutting of UD-CFRP.  ... 
doi:10.1007/978-981-13-1780-4_15 fatcat:dk4g4sfpcrbbndsuwspwzsiz7e

Incorporating Fiber Controls into FEM Model for Transversely Isotropic Materials [article]

Cai Jianping, Lin Feng, Lee Yong Tsui, Qian Kemao, Seah Hock Soon
2014 Pacific Conference on Computer Graphics and Applications  
However, most of the existing models focus on isotropic materials, while elastic objects with complex anisotropic properties are less studied.  ...  This proposed model can provide a control for directable deformations, and yields realistic anisotropic deformations.  ...  The sketch-based interface is based on Kenshi's paper and code [TAI * 08] -for non-FEM models.  ... 
doi:10.2312/pgs.20141243 dblp:conf/pg/CaiLLQS14 fatcat:wvmgzserufd27ksvsjrr5nrnte

Inertia-based identification of elastic anisotropic properties for materials undergoing dynamic loadings using the virtual fields method and heterogeneous impact tests

Jiawei Fu, Kaiyu Zhu, Xiangfan Nie, Yuyuan Tang, Zefei Yang, Lehua Qi
2021 Materials & design  
Next, the simulated full-field strain and acceleration data are utilized to extract the input target orthotropic stiffness components.  ...  The characterization of material anisotropic properties at high strain rates remains a challenging work due to the limitations of the conventional dynamic testing methods.  ...  Table 1 1 Simulation parameters of the FE models.  ... 
doi:10.1016/j.matdes.2021.109594 fatcat:fe7auintbzcltbhvsvqhswgmbe

An effective parameterization of texture-induced viscous anisotropy in orthotropic materials with application for modeling geodynamical flows [article]

Javier Signorelli, Riad Hassani, Andréa Tommasi, Lucan Mameri
2020 arXiv   pre-print
The implementation was validated by comparison with results of the analytical solution and of the SO-VPSC model for simple shear and axial compression of a homogeneous anisotropic material.  ...  In this article, we describe the mathematical formulation and the numerical implementation of an effective parametrization of the viscous anisotropy of orthorhombic materials produced by crystallographic  ...  Acknowledgments We are grateful to Ricardo Lebensohn and Carlos Tomé for making the VPSC7c code  ... 
arXiv:2008.11494v2 fatcat:6vqvdp6wunfr3ok7u26bxebuvu

An Experimental and Computational Study on the Orthotropic Failure of Separators for Lithium-Ion Batteries

Marian Bulla, Stefan Kolling, Elham Sahraei
2020 Energies  
The model succeeded in predicting the anisotropic response of the PE separator due to deformation and failure. The proposed failure model can also be combined with other constitutive material laws.  ...  Finally, a simulation model of a PE separator was developed combining the novel failure criterion with Hill's yield surface and a Swift–Voce hardening rule.  ...  Acknowledgments: The authors would like to thank to Boston Powers for providing the isolator materials. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/en13174399 fatcat:w6gve6ovpvcjrcivd35ncsusze

Finite element modelling of off-road tyres for radial tyre model parameterization

Johannes Martinus Conradie, Pieter Schalk Els, Philippus Stephanus Heyns
2015 Proceedings of the Institution of mechanical engineers. Part D, journal of automobile engineering  
This paper investigates the possibility of using a coarse finite element model with bulk material properties, to model the vertical force-displacement characteristics of a tyre, for the purpose of tyre  ...  The global behaviour of the finite element model is analysed by comparing experimental and simulation data on a flat surface as well as various lateral and longitudinal cleats.  ...  in radial direction polyester, nylon and steel cords polyester, nylon and steel cords Material model: carcass Orthotropic Orthotropic Orthotropic Material model parameters Radial:  ... 
doi:10.1177/0954407015590018 fatcat:svj277gqtbhx7minzkja4mbjha

Non-orthogonal constitutive equation for woven fabric reinforced thermoplastic composites

Woong Ryeol Yu, Farhang Pourboghrat, Kwansoo Chung, Michael Zampaloni, Tae Jin Kang
2002 Composites. Part A, Applied science and manufacturing  
In particular, the current model aims to account for the effect of the fiber strength difference and orientation on anisotropy and also to simulate shear deformation without significant length change,  ...  For validation purposes, the model was implemented in an explicit dynamic finite element code and tested for in-plane simple shear, pure shear, uniaxial tension, and draping behavior of woven composites  ...  Materials and Structures Center (CMSC) at Michigan State University.  ... 
doi:10.1016/s1359-835x(02)00053-2 fatcat:mij37geyzrgpbd4tsx6ikk22sa
« Previous Showing results 1 — 15 out of 2,971 results