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热力藕合问题的交替算法 预览 被引量:1

An alternate computing method of thermo-mechanical coupling problems
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摘要 在极大的加热速率下,针对CV型非Fourier介质,提出一个热力耦合问题的解耦交替计算方法,即交替地计算两个解除了耦合的问题,逐步地得到足够精度的解。这两个问题分别是已知温度时空分布的热Hooke介质的应力分析问题和已知位移、应变和应力时空分布的非Fourier介质的热传导问题。这个方法也适用于Fourier介质,与每一解耦问题实施计算的方法无关。用简例说明了随交替计算次数的增加,其结果趋近于准确解;同时给出了对Fourier介质板一个瞬态问题的应用例子。 For CV non-Fourier media subjected to high heating rates,an iteration method was proposed for the solution of the coupled thermal-mechanical problem. Two uncoupling problems were computed alternately, and the sufficient precision solution was obtained step by step. These two problems were thermo-stress analysis when temperature was given and the non-Fourier thermal conduction problems when displacement, strain and stresses were provided respectively. The method is adaptable to the Fourier media and independent of the uncoupling problem's computing method. The transient response of a Fourier plate was discussed as an application. Results show that the more the times of alternate computing, the more the orecision of the result.
作者 张晓敏 彭向和 张培源 ZHANG Xiao-min , PENG Xiang-he, ZHANG Pei-yuan (Department of Engineering Mechanics, Chongqing University, Chongqing, 400044)
出处 《爆炸与冲击》 EI CAS CSCD 北大核心 2006年第4期 309-314,共6页 Explosion and Shock Waves
基金 国家自然科学基金项目(19272119)
关键词 热学 交替算法 非Fourier定律 热力耦合 theory of heats alternate computing methods non-Fourier laws thermo-mechanical coupling problem
作者简介 张晓敏(1974-),男,讲师,博士研究生。E-mail address:xiaomin@cqu.edu.cn Telephone: 023-66802279
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