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| 考虑损伤累积的热弹塑性问题变分原理及其有限元方法 | |
| 引用本文： | 曹文衔 沈祖炎. 考虑损伤累积的热弹塑性问题变分原理及其有限元方法[J]. 力学季刊, 1996, 17(4): 271-277 |
| 作者姓名： | 曹文衔 沈祖炎 |
| 作者单位： | 同济大学(曹文衔，沈祖炎)，同济大学(董宝) |
| 基金项目： | 国家科委攀登(B)计划资助项目 |
| 摘 要： | 本文基于连续介质损伤力学中有效应力的概念，研究建筑结构抗火分析中遇到的热弹塑性问题与损伤的耦合，并运用参变量变分原理，建立起用于热弹塑性损伤问题结构分析的变分原理。本文给出了原理应用的有限元列式。具有明确的物理意义，表达形式规范，便于数值手段实现。 |
| 关 键 词： | 热弹塑性 损伤累积 变分原理 有限元 |
A VARIATIONAL PRINCIPLE AND ITS FEM IMPLEMENTATION FOR AN ELASTO-PLASTICITY THERMAL PROBLEM WITH DAMAGE CUMULATION |
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| Cao Wenxian Shen Zuyan Dong Bao. A VARIATIONAL PRINCIPLE AND ITS FEM IMPLEMENTATION FOR AN ELASTO-PLASTICITY THERMAL PROBLEM WITH DAMAGE CUMULATION[J]. Chinese Quarterly Mechanics, 1996, 17(4): 271-277 | |
| Authors: | Cao Wenxian Shen Zuyan Dong Bao |
| Abstract: | This paper presents a research report of an elasto-plasticity thermal problem coupling with damage cumulation which occurs in analysing the fire resistant behavior of a building strucrure. Relying upon the parametric variational principle, a variational principle and its FEM implementation for an elasto-plastcity thermal problem with damage cumulation is proposed. This proposed principle posseses clear physical meaning and is in standard formulation such that it is feasible for numerical application. |
| Keywords: | effective stress thermal elasto-plasticity damage cumulation vanational principle FEM. |
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