| 无网格法在断裂力学中的应用 |
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| 引用本文： | 李卧东,王元汉,陈晓波. 无网格法在断裂力学中的应用[J]. 岩石力学与工程学报, 2001, 20(4): 462-466 |
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| 作者姓名： | 李卧东 王元汉 陈晓波 |
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| 作者单位： | 1. 华中科技大学土木工程学院,武汉,430074
2. 第二炮兵指挥学院四系,武汉,430012 |
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| 摘 要： | 采用罚函数法满足无网格法的本征边界条件，给出了罚参数的选择方案。对单裂纹体的应力场进行了分析，讨论了积分围线对应力强度因子计算结果的影响。数值结果表明，该方法可以有效地计算裂纹尖端的应力集中和应力强度因子，并能准确地模拟裂纹的传播。
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| 关 键 词： | 无网格法 移动最小二乘法 断裂力学 应力强度因子 |
| 文章编号： | 1000-6915(2001)04-0462-05 |
| 收稿时间： | 1999-12-24 |
| 修稿时间： | 1999-12-27 |
APPLICATION OF MESHLESS METHOD IN FRACTURE MECHANICS |
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| Li Wodong,Wang Yuanhan,Chen Xiaobo. APPLICATION OF MESHLESS METHOD IN FRACTURE MECHANICS[J]. Chinese Journal of Rock Mechanics and Engineering, 2001, 20(4): 462-466 |
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| Authors: | Li Wodong Wang Yuanhan Chen Xiaobo |
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| Abstract: | Penalty method is used to satisfy essential boundary conditions for meshless method, and the penalty parameters are studied for the selection. The stress field of elasticity including single crack is analyzed and the effect of integral contour on computed efforts of stress intensity factors is discussed. Numerical examples show that the present implementation effectively computes stress concentrations and stress intensity factors at cracks, and crack propagation can be accurately modeled. |
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| Keywords: | meshless method moving least squares fracture mechanics stress intensity factors |
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