| 耐热钢高温蠕变疲劳内部微裂纹的数值模拟 |
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| 引用本文： | 郭隽,郑长江,郭成璧,梁莎莉,周玮生.耐热钢高温蠕变疲劳内部微裂纹的数值模拟[J].大连理工大学学报,2000,40(2):140-143. |
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| 作者姓名： | 郭隽 郑长江 郭成璧 梁莎莉 周玮生 |
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| 作者单位： | 1. 大连理工大学,动力工程系,辽宁,大连,116024
2. 日本立命馆大学,理工学部,京都 |
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| 基金项目： | 国家自然科学基金资助项目 !(59675001) |
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| 摘 要： | 介绍了一种内部随机均匀分布微裂纹的数值模拟晶界破坏抵抗模型 .利用该模型对耐热合金钢SUS30 4高温蠕变疲劳内部微裂纹的萌生、扩展、合体全过程进行了数值模拟和分析 ,模拟结果与实验结果相吻合
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| 关 键 词： | 蠕变疲劳 内部微裂纹 数值模拟 耐热钢 高温 |
Visual simulation on inner stochastic cracks of polycrystalline heat-resistant materials under creep-fatigue conditions |
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| GUO Jun,ZHENG Chang-jiang,GUO Cheng-bi,LIANG Sha-li,ZHOU Wei-sheng.Visual simulation on inner stochastic cracks of polycrystalline heat-resistant materials under creep-fatigue conditions[J].Journal of Dalian University of Technology,2000,40(2):140-143. |
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| Authors: | GUO Jun ZHENG Chang-jiang GUO Cheng-bi LIANG Sha-li ZHOU Wei-sheng |
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| Institution: | GUO Jun 1,ZHENG Chang\|jiang 1,GUO Cheng\|bi 1,LIANG Sha\|li 1,ZHOU Wei\|sheng 2 |
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| Abstract: | The behavior of micro\|cracks leads to the damage process of high\|temperature fatigue. In this paper, a model is proposed for simulating the spatial and temporal distribution of inner stochastic cracks and evaluating the process of fatigue damage. A visual simulation on SUS304 stainless steel during creep\|fatigue is conducted. Some features of inner stochastic cracks are obtained through the analysis of simulation results. This paper also presents the connections between numerical parameters and test conditions. |
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| Keywords: | creep\|fatigue inner crack numerical simulation |
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