Elastoplastic homogenization of particulate composites complying with the Mohr–Coulomb criterion and undergoing isotropic loading  

作　　者：D.Yang Q.C.He 

机构地区：[1]School of Mechanical Engineering, Southwest Jiaotong University [2]Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle UMR 8208 CNRS

出　　处：《Acta Mechanica Sinica》2015年第3期392-405,共14页力学学报（英文版）

摘　　要：This work aims at determining the overall response of a two-phase elastoplastic composite to isotropic loading. The composite under investigation consists of elastic particles embedded in an elastic perfectly plastic matrix governed by the Mohr-Coulomb yield criterion and a non-associated plastic flow rule. The composite sphere assemblage model is adopted, and closed-form estimates are derived for the effective elastoplastic properties of the composite either under tensile or compressive isotropic loading. In the case when elastic particles reduce to voids, the composite in question degenerates into a porous elastoplastic material. The results obtained in the present work are of interest, in particular, for soil mechanics.This work aims at determining the overall response of a two-phase elastoplastic composite to isotropic loading. The composite under investigation consists of elastic particles embedded in an elastic perfectly plastic matrix governed by the Mohr-Coulomb yield criterion and a non-associated plastic flow rule. The composite sphere assemblage model is adopted, and closed-form estimates are derived for the effective elastoplastic properties of the composite either under tensile or compressive isotropic loading. In the case when elastic particles reduce to voids, the composite in question degenerates into a porous elastoplastic material. The results obtained in the present work are of interest, in particular, for soil mechanics.

关 键 词：Composite Porous medium. Elastoplasticity Mohr-Coulomb yield criterion Non-associated flow rule HOMOGENIZATION 

分 类 号：TB33[一般工业技术—材料科学与工程]