摘要
本文在塑性应变空间内通过材料变形历史定义了一系列记忆曲面,引入了塑性应变幅度和平均塑性应变的概念,并在此基础上建立了内变量型的本构方程。它较好地描述了材料的循环硬(软)化、再硬(软)化、离散记忆和Masing特性,对H60黄铜所进行的实验研究和数值模拟表明:理论与实验相当一致。
In this paper, a set of memory surfaces were defined in plastic strain space. Based on them, a new constitutive model of cyclic plasticity with internal variables was proposed. Experiments and numerical simulation were made for H60 copper and a fairly good agreement was achieved between them.
出处
《力学学报》
EI
CSCD
北大核心
1989年第6期705-713,共9页
Chinese Journal of Theoretical and Applied Mechanics
基金
国家自然科学基金
关键词
金属材料
循环
载荷
本构关系
constitutive relations, cyclic plasticity, memory surface
