A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
APPLICATIONS TO GEOTECHNICAL PROBLEMS OF A MICROMECHANICAL MODELING OF DAMAGE
Summary The mechanical behaviors of geomaterials are significantly affected by the presence of voids or crack-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.
APPLICATIONS TO GEOTECHNICAL PROBLEMS OF A MICROMECHANICAL MODELING OF DAMAGE
Summary The mechanical behaviors of geomaterials are significantly affected by the presence of voids or crack-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.
APPLICATIONS TO GEOTECHNICAL PROBLEMS OF A MICROMECHANICAL MODELING OF DAMAGE
Levasseur, Séverine (author) / Collin, Frédéric (author) / Charlier, Robert (author) / Kondo, Djimédo (author)
2011-01-01
4 pages
Article/Chapter (Book)
Electronic Resource
English
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