摘要
本文基于连续介质损伤力学中有效应力的概念,研究弹塑性蠕变问题中的损伤耦合,并应用由最优控制理论基本思想发展起来的参变量变分原理建立起用于弹塑性蠕变损伤问题结构分析的变分原理.文中给出了原理的证明.该原理的物理意义明确,表达式简单且规范,容易为数值手段实现.
Based on the concept of the effective stress in Continuum Damage Mechanics,the paper studies thedamage-coupled problem in elastoplastic creep.By the parametric variational principle developed fromthe optimum control theory,the numerical principle for the discussed problem has been established,theproof for which is given also.The proposed principle is easy to be put into practice by computer.
出处
《固体力学学报》
CAS
CSCD
北大核心
1992年第2期95-100,共6页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金资助
关键词
弹塑性
蠕变损伤
变分原理
effective stress
elastoplasticity
creep
damage
parametric variational principle
