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A non-linear homogeneous model for bone-like materials under compressive load.
Mengoni, Marlène; Voide, Romain; Toye, Dominique et al.
2011In Nithiarasu, P.; Löhner, R.; van Loon, R. et al. (Eds.) Conference Proceedings - 2nd International Conference on Computational & Mathematical Biomedical Engineering
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Keywords :
trabecular bone; fabric; anisotropy
Abstract :
[en] Using morphological data provided by computed tomography, finite element (FE) models can be used to compute the mechanical response of bone and bone-like materials without describing the complex local microarchitecture. A constitutive law is here developed and proposed for this purpose. It captures the non-linear structural behavior of bone-like materials through the use of fabric tensors. It also allows for irreversible strains using a plastic material model, allowing hardening of the yield parameters. These characteristics are expressed in a constitutive law based on the anisotropic continuum damage theory coupled with isotropic elastoplasticity in a finite strains framework. This law is implemented into Metafor, a non-linear FE software. Simulations of cylindrical samples undergoing stepwise compression are presented.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Mechanical engineering
Author, co-author :
Mengoni, Marlène ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Milieux continus et thermomécanique
Voide, Romain;  ETH Zurich > Institute for Biomechanics
Toye, Dominique  ;  Université de Liège - ULiège > Département de chimie appliquée > Génie de la réaction et des réacteurs chimiques
Léonard, Angélique  ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Procédés et développement durable
van Lenthe, Gerrit Hendrik;  Katholieke Universiteit Leuven - KUL > Department of Mechanical Engineering > Biomechanics and Engineering Design Section - BMGO
Ponthot, Jean-Philippe  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Language :
English
Title :
A non-linear homogeneous model for bone-like materials under compressive load.
Publication date :
2011
Event name :
2nd International Conference on Computational & Mathematical Biomedical Engineering
Event organizer :
George Mason University
Event place :
Washington D.C., United States
Event date :
April 2011
Audience :
International
Main work title :
Conference Proceedings - 2nd International Conference on Computational & Mathematical Biomedical Engineering
Editor :
Nithiarasu, P.
Löhner, R.
van Loon, R.
Sazonov, I.
Xie, X.
ISBN/EAN :
978-0-9562914-1-7
Pages :
355-358
Peer reviewed :
Peer reviewed
Available on ORBi :
since 01 February 2011

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