关于复合材料弹塑性的一个理论描述

根据格林函数理论和微扰方法，提出了描述复合材料弹塑性（非线性应力－应变关系）行为的简单理论．对陶瓷颗粒增强金属基复合材料，给出了两个不同的解。ＳｉＣ／Ａｌ复合材料的计算实例表明，理论结果与实验结果是相符合的．

ON A THEORY FOR ELASTOPLASTICITY OF COMPOSITES

A simple theory for describing elastoplastic behavior(nonlinear stress-strainrelations) of composites has been developed in terms of Green’s function theory and per-turbation method. For the metal-matrix composites reinforced with ceramic particles, twodifferent solutions,namely average t- matrix approximation(ATA) and coherent-potential ap-proximation(CPA), have been given. A calculation exainple of SiCp /Al composites indicatesthat the theoretical predictions are consistent with experimental results。