中文摘要：

多相单一颗粒材料集合而成的材料称为多相颗粒复合材料．为了废弃材料的再生利用，人们经常将多种单相废弃材料打碎成颗粒后黏结在一起形成多相颗粒复合材料．本文把多相颗粒复合材料中的任意一颗粒看成夹杂，通过等效夹杂法和本征应变自洽法，给出多相颗粒复合材料的宏观弹塑性应力一应变增量关系，寻找出颗粒复合材料的宏观弹塑性力学性质与各相弹塑性颗粒材料力学性质的关系．

英文摘要：

Assume that a composite material is an aggregate of numerous several phase elastoplastic grains, where any grain in the composite material only belongs to one phase material. For the recovery of waste products, people often cut several kinds of waste products into numerous tiny grains and then paste them together to form a composite material of several phase tiny grains. In this paper, any grain in the composite material is taken as an inclusion. By the equivalent inclusion method and the self - consistent method on eigenstrain, we give the macroscopic constitutive relation of the composite material of several phase elastoplastic grains. We find out the relations of material properties between the composite material and its tiny grains.