| 一种新边界积分方程在三维裂纹分析中的应用 |
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| 引用本文： | 彭述平,黎在良.一种新边界积分方程在三维裂纹分析中的应用[J].华中科技大学学报(自然科学版),1997(9). |
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| 作者姓名： | 彭述平 黎在良 |
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| 作者单位： | 华中理工大学力学系 |
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| 摘 要： | 在推导出一种新的边界积分方程的基础上，分别对三维单个裂纹、多个周期裂纹进行了数值计算．单个裂纹的计算结果表明，最大裂纹张开位移能达到误差低于１．０％的精确结果；多裂纹的计算结果表明，在退化为二维问题时与解析解相吻合，该方法可用于断裂力学对多裂纹的研究．
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| 关 键 词： | 裂纹张开位移 应力强度因子 裂尖单元 |
The Application of a New Boundary Integration Equation to Three Dimensional Crack Analysis |
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| Abstract: | A new boundary integration equation based on crack opening displacement has been developed. Single crack and multiple periodic cracks in three dimensional space are numerically calculated. Calculation results of the case with single crack are obtained with an error of less than 1.0 % while those of periodic oracks agree well with those of the analytic solution when the problem is reduced to a two dimensional one. |
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| Keywords: | crack opening displacement stress intensity factor crack tip element |
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