Homogenization of anisotropic elastoplastic behaviors of a porous polycrystal with interface effects - École des Ponts ParisTech Access content directly
Journal Articles International Journal for Numerical and Analytical Methods in Geomechanics Year : 2013

Homogenization of anisotropic elastoplastic behaviors of a porous polycrystal with interface effects

Abstract

This paper is devoted to develop a theoretical framework to predict the macroscopic transversely isotropic elastoplastic behavior of clay-like material, which is viewed as a porous polycrystal. We consider evolutions of two local plastic mechanisms of grains and interface simultaneously, for which a Schmid criterion is used for the strength of sheet-like grains and a Tresca criterion for the strength of interfaces between particles. By adapting the standard incremental method, we propose firstly a classic self-consistent model, which does not consider the effect of interface, then a generalized self-consistent model in which the solid phase is represented by laminated (or isotropic) spherical grains surrounded by interfaces. Comparisons of numerical predictions between these two methods are performed and have demonstrated the validity of the generalized self-consistent model taking account of interface effects. Numerical simulations of uniaxial compression tests have shown that the macroscopic elastoplastic behavior of polycrystalline (clay-like) material can be successfully predicted by the way of considering the two local plastic mechanisms at microscopic scale. © 2013 John Wiley and Sons, Ltd.

Dates and versions

hal-00946103 , version 1 (14-02-2014)

Identifiers

Cite

Z. He, G. Caratini, Luc Dormieux, D. Kondo. Homogenization of anisotropic elastoplastic behaviors of a porous polycrystal with interface effects. International Journal for Numerical and Analytical Methods in Geomechanics, 2013, 37 (18), pp.3213-3236. ⟨10.1002/nag.2186⟩. ⟨hal-00946103⟩
142 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More