| 两种材料中界面裂纹能量释放率的仿真研究及与单一材料裂纹比较 |
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| 引用本文： | 李成,常向前,郑艳萍. 两种材料中界面裂纹能量释放率的仿真研究及与单一材料裂纹比较[J]. 船舶力学, 2007, 11(4): 622-627 |
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| 作者姓名： | 李成 常向前 郑艳萍 |
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| 作者单位： | 郑州大学机械工程学院,河南,郑州,450001;黄委会水科院工程力学研究所,河南,郑州,450003 |
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| 摘 要： | 针对两种材料界面裂纹,采用弹性断裂理论和复变函数理论建立计算模型.用能量释放率来描述裂纹的扩展情况,并根据界面裂纹能量释放率解析计算方法对不同的材料性质和外荷载,以及不同的板厚度对裂纹扩展时的能量释放率进行了仿真分析,得到了能量释放率和两种材料的弹性模量、外荷载及板的厚度之间的关系变化的曲线.并对界面裂纹和单一材料裂纹的情况进行了分析和比较.
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| 关 键 词： | 两种材料界面裂纹 能量释放率 仿真 有限宽板 复变函数 |
| 文章编号： | 1007-7294（2007）04-0622-06 |
| 修稿时间： | 2007-01-10 |
Simulation analysis on interfacial crack energy release rates in two materials' structure and comparison with those in the single material |
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| LI Cheng,CHANG Xiang-qian,ZHENG Yan-ping. Simulation analysis on interfacial crack energy release rates in two materials' structure and comparison with those in the single material[J]. Journal of Ship Mechanics, 2007, 11(4): 622-627 |
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| Authors: | LI Cheng CHANG Xiang-qian ZHENG Yan-ping |
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| Affiliation: | 1 School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450002, China; 2 Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou 450003, China |
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| Abstract: | A calculation model on interfacial crack analysis in two materials' structure was developed upon the elastic fracture theory and the complex function.The expansion was described by the crack energy release rate.Simulation analysis was made on the energy release rate during the crack expansion processes for various materials,outer loads and plate depth.And the relationship curves between crack energy release rate and elastic modulus of the two materials,various outer loads and plate depths were plotted respectively.Analysis and compares were made on interfacial cracks in the two materials' structure and those in the single material. |
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| Keywords: | interfacial cracks in two materials' structure energy release rate simulation limited depths plate complex functions |
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