Reference : On the micro-scale modelling by homogenization schemes in geomechanics
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/66652
On the micro-scale modelling by homogenization schemes in geomechanics
English
Levasseur, Séverine mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
Collin, Frédéric mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
Charlier, Robert mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur >]
Zhu, Qizhi [Université Paris Est > > > >]
Kondo, Djimédo [Laboratoire de mécanique de Lille > > > >]
2010
USNCTAM 2010
Yes
No
International
16th US National Congress on Theoretical and Applied Mechanics USNCTAM 2010
du 27 juin au 2 juillet 2010
Penn State University
State College
USA
[en] The mechanical behaviors of geomaterials are significantly affected by the presence of voids or cracks-like defects. The modeling of such behavior is classically performed by considering purely macroscopic or micromechanically-based damage models. In the perspective of applications in civil engineering or in geomechanics, we propose in this paper to evaluate a homogenization approach, based on Mori-Tanaka scheme, applied to micro-cracked materials. In order to provide an appropriate interpretation of the nonlinear behavior at macro-scale, the crack-induced damage is coupled to friction phenomena on closed cracks lips. The predictions of the coupled model are first analyzed on laboratory tests performed on Callovo-Oxfordian Clay. Then, they are extended to a numerical analysis of excavation damaged zones around tunnels
http://hdl.handle.net/2268/66652

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