| 预测复合材料开裂方向的比应变能密度准则 |
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| 引用本文： | 张双寅,蔡良武.预测复合材料开裂方向的比应变能密度准则[J].应用数学和力学,1993,14(1):79-87. |
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| 作者姓名： | 张双寅 蔡良武 |
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| 作者单位： | 中国科学院力学研究所 |
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| 摘 要： | 本文提出预测复合材料中裂纹方向的比应变能密度准则,并将Tsai-Hill与Norris准则扩展来预测复合材料中的开裂方向.用这三个准则预测了具有各种不同纤维方向的单向纤维复合材料的裂纹扩展方向,预测结果与现有的比正应力准则和应变能密度准则进行了对比.
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| 关 键 词： | 复合材料 开裂方向 各向异性 线弹性断裂力学 |
| 收稿时间： | 1989-11-06 |
The Strain Energy Density Ratio Criterion for Predicting Cracking Direction in Composite Materials |
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| Zhang Shuang-yin Cai Liang-wu.The Strain Energy Density Ratio Criterion for Predicting Cracking Direction in Composite Materials[J].Applied Mathematics and Mechanics,1993,14(1):79-87. |
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| Authors: | Zhang Shuang-yin Cai Liang-wu |
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| Institution: | Institute of Mechanics, Chinese Academy of Sciences, Beijing |
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| Abstract: | The strain energy density ratio criterion for predicting cracking direction in composite materials is proposed. The Tsai-Hill criterion and Norris criterion of composite materials are extended to predict the cracking direction in compsites. The three criteria are used to analyse the crack propagation problem of the unidirectional fibre composite sheet with various fibre directions. The predicted results are compared with those of the existing normal stress ratio criterion and strain energy density criterion. |
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| Keywords: | composite materials cracking direction anisotropy linear elastic frac- ture mechanics |
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