| 边界奇异权法在复合型裂纹计算中的应用 |
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| 引用本文： | 杜烨,汤红卫,王卫东.边界奇异权法在复合型裂纹计算中的应用[J].山东大学学报(工学版),2008,38(3):123-126. |
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| 作者姓名： | 杜烨 汤红卫 王卫东 |
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| 作者单位： | 1. 山东科技大学资源与环境学院,山东,青岛266510
2. 山东大学土建与水利学院,山东,济南250061 |
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| 摘 要： | 将边界奇异权法引入无网格方法中,通过对移动最小二乘近似(MLS)形函数进行修正，实现了本质边界条件在结点处的精确施加.将其应用于线弹性断裂力学问题的求解,计算了复合型裂纹的应力强度因子,分析了裂尖附近应力场,并与完全变换法的计算结果进行了对比.
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| 关 键 词： | 无网格法 边界奇异权法 应力强度因子 |
| 收稿时间： | 2006-08-14 |
Application of the boundary singular kernel method in mixed-mode cracks |
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| DU Ye,TANG Hong-wei,WANG Wei-dong.Application of the boundary singular kernel method in mixed-mode cracks[J].Journal of Shandong University of Technology,2008,38(3):123-126. |
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| Authors: | DU Ye TANG Hong-wei WANG Wei-dong |
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| Affiliation: | 1. College of Natural Resources and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266510, China; 2. School of Civil Engineering, Shandong University, Jinan 250061, China |
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| Abstract: | The essential boundary conditions were imposed in mesh free method by applying the boundary singular kernel method and revising the moving least square(MLS) shape function.This method was used in linear elastic fracture mechanics.The stress intensity factors of mixed-mode cracks were calculated and the stress field near the crack tip was analyzed.The results were also compared with those of full transformation methods. |
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| Keywords: | mesh-free method boundary singular kernel method stress intensity factor |
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