%0 Conference Proceedings
%T Annulus fibrosus microstructure: an explanation to local heterogeneities
%+ Department of Mechanical Engineering [Sheffield]
%+ Laboratoire de Mécanique et Génie Civil (LMGC)
%+ Biomécanique des Interactions et de l'Organisation des Tissus et des Cellules (BIOTIC)
%A Baldit, Adrien
%A Ambard, Dominique
%A Cherblanc, Fabien
%A Royer, Pascale
%< avec comité de lecture
%B 39ème congrès de la Société de Biomécanique
%C Valenciennes, France
%3 39ème congrès de la Société de Biomécanique
%8 2014-08-27
%D 2014
%R 10.1080/10255842.2014.931092
%K Annulus Fibrosus
%K Intervertebral Disc
%K Hydro-Chemo-Mechanical Model
%K Finite Element
%K Digital Image Correlation
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Biomechanics [physics.med-ph]
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]
%Z Engineering Sciences [physics]/Mechanics [physics.med-ph]Conference papers
%X Annulus fibrosus (AF) is the outer tissue ofintervertebral discs (IVD). Its peculiarmicrostructure and biphasic composition define byan oriented fibre network embedded in a highlyhydrated matrix (60−70%) is usually assimilated toporous composite material. It confers to AF a nonlinear,viscous and anisotropic behaviour.Many experimental and numerical studiesunderlined the anisotropic and non-linearmechanical behaviours on averaged values[Ambard and Cherblanc, 2009; Malandrino et al,2011] but fail to represent the experimental strainheterogeneities [Baldit et al, 2013a; Michalek et al,2010], that would be related to the microstructureand the biphasic constitution. On the other hand,characterization rarely relies on volumic behaviorbut it’s relevant when models deal with soft porousmedia [Baldit et al, 2013b].This work aims to couple a poro-hyper-elasticmodel identification with homogenized anddiscretized geometries highlighting modelsensitivity and limits regarding experimentaltransverse strains measurements.
%G English
%2 https://hal.science/hal-01219449/document
%2 https://hal.science/hal-01219449/file/Annulus_fibrosus_microstructure_Baldit_al_2014.pdf
%L hal-01219449
%U https://hal.science/hal-01219449
%~ CNRS
%~ LMGC
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021