弹塑性损伤问题的自洽分析方法<sup>*</sup>

弹塑性损伤问题的自洽分析方法^*

基金项目: 国家自然科学基金(19762002);江西省自然科学基金

1.
Institute of Engineering Mechanics, Nanchang University, Nanchang 330029, P. R. China;
2.
Institute for Mechanics(Civil Engineering), Stuttgart University, Federal Republic of Germany, D-70550

摘要: 基于不可逆热力学理论和内变量理论,提出平均意义下的Clausius-Duhem不等式方程.与以往弹塑性空洞损伤研究不同,本文旨在利用自洽分析法建立起既考虑空洞形状影响又考虑空洞之间相互作用的场方程,并使之能够处理空洞体积比较大的弹塑性损伤问题.
- 弹塑性损伤 /
- 自洽分析 /
- 热力学定理 /
- 夹杂
Abstract: Based on irreversible thermodynamics and internal state variable theory,the volnme-averaged Clausius-Duhem inequality is presented,In contrast to former investigations on damage-elastoplasticity,our evalustions are founded on the volume-averaged field equations of the analyzed elements and the self-consistent method.Hence,our results not only include the influence of void shapes but also consider the interaction among voids.Further,previous work about coupled elastoplastic damage problems only takes into account small initial void volume fractions.Our work,however,will be able to deal with elastoplastic damage problems with larger initial void volume fractions.
- elastoplastic damage /
- self-consistent method /
- law of thermodynamics /
- inclusions

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