In this paper, we investigate some micromechanical aspects of elasto-plasticity in heterogeneous geomaterials. The aim is to upscale the elasto-plastic behavior for a representative volume of the material which is indeed a very challenging task due to the irreversible deformations involved. Considering the plastic strains as eigen-strains allows us to employ the powerful tools offered by Continuum Micromechanics which are mainly developed for upscaling of eigen-stressed elastic media. The validity of such eigen-strain based formulation of multiscale elasto-plasticity is herein examined by comparing its predictions against Finite Element (FE) simulations.

中文翻译：

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基于连续谱微力学的非均质岩土弹塑性的多尺度建模

在本文中，我们研究了非均质岩土材料中弹塑性的一些微观力学方面。目的是针对代表体积的材料扩大弹塑性行为，由于涉及不可逆的变形，这确实是非常具有挑战性的任务。将塑性应变视为本征应变，使我们能够使用Continuum Micromechanics提供的强大工具，这些工具主要是为提高本征应力弹性介质的尺寸而开发的。本文通过将其预测与有限元（FE）模拟进行比较，来检验这种基于本征应变的多尺度弹塑性配方的有效性。