About: A Nonlocal Constitutive Model for Trabecular Bone Softening in Compression

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	A constitutive law is proposed which captures the compressive behavior of trabecular bone as a porous material with accumulation of irreversible strain and loss of stiffness beyond its yield point and softening beyond its ultimate point. To account for these features, a constitutive law based on damage coupled with hardening anisotropic elastoplasticity is formulated using density and fabric-based tensors. To prevent mesh dependence of the solution, a nonlocal averaging technique is adopted. The law has been implemented into a FE software and some simple simulations are first presented to illustrate its behavior. Finally, examples dealing with compression of vertebral bodies clearly show the impact of softening on the localization of the inelastic process. A constitutive law is proposed which captures the compressive behavior of trabecular bone as a porous material with accumulation of irreversible strain and loss of stiffness beyond its yield point and softening beyond its ultimate point. To account for these features, a constitutive law based on damage coupled with hardening anisotropic elastoplasticity is formulated using density and fabric-based tensors. To prevent mesh dependence of the solution, a nonlocal averaging technique is adopted. The law has been implemented into a FE software and some simple simulations are first presented to illustrate its behavior. Finally, examples dealing with compression of vertebral bodies clearly show the impact of softening on the localization of the inelastic process. (en)
Title	A Nonlocal Constitutive Model for Trabecular Bone Softening in Compression A Nonlocal Constitutive Model for Trabecular Bone Softening in Compression (en)
skos:prefLabel	A Nonlocal Constitutive Model for Trabecular Bone Softening in Compression A Nonlocal Constitutive Model for Trabecular Bone Softening in Compression (en)
skos:notation	RIV/68407700:21110/10:00164527!RIV11-GA0-21110___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA106/08/1508)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Jirásek, Milan Charlebois, Mathieu
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta stavební
http://linked.open...dnocenehoVysledku	244789
http://linked.open...ai/riv/idVysledku	RIV/68407700:21110/10:00164527
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	trabecular bone; damage; plasticity; softening; localization; nonlocal continuum (en)
http://linked.open.../riv/klicoveSlovo	trabecular bone damage nonlocal continuum plasticity softening localization
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[CEFEA2A9C958]
http://linked.open...i/riv/nazevZdroje	Biomechanics and Modeling in Mechanobiology
http://linked.open...in/vavai/riv/obor	JJ
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Regularized model for localized compressive failure of trabecular bone
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	9
http://linked.open...iv/tvurceVysledku	Jirásek, Milan Charlebois, Mathieu Zysset, P. K.
http://linked.open...ain/vavai/riv/wos	000281842800010
issn	1617-7959
number of pages	15 (xsd:int)
http://localhost/t...ganizacniJednotka	21110
is http://linked.open...avai/riv/vysledek of	A Nonlocal Constitutive Model for Trabecular Bone Softening in Compression A Nonlocal Constitutive Model for Trabecular Bone Softening in Compression A Nonlocal Constitutive Model for Trabecular Bone Softening in Compression

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