| 陈颂英,孙树勋.完备型二次边界轮廓法的研究及J积分和应力强度因子的计算[J].计算力学学报,1999,16(3):370~374 |
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| 完备型二次边界轮廓法的研究及J积分和应力强度因子的计算 |
| Research of perfect quadratic boundary contour method and the evaluations of J integral and stress intensity factor |
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| DOI：10.7511/jslx19993061 |
| 中文关键词: 边界元 J积分 应力强度因子 二次边界轮廓法 |
| 英文关键词:boundary
element methods,J integral,stress intensity factor |
| 基金项目:山东省自然科学基金 |
| 陈颂英 孙树勋 |
| [1]山东工业大学化工系 [2]山东工业大学工程力学研究所 |
| 摘要点击次数: 1394 |
| 全文下载次数: 2 |
| 中文摘要: |
| 选择二次完全多项多作为位移形函数，对边界轮廓法作了进一步的发展，证明二维弹性断裂问题的Ｊ积分方程的被积分函数的散度等于零，将Ｊ积分化为边界点的势函数数值的计算，无需计算数值积分，算例表明，该方法较传统边界元法求得的结果精度更好。 |
| 英文摘要: |
| Some developments of boundary contour method with perfect
quadratic polynomial selected as displacement shape function are presented in this paper.
Divergence free property of J integral in two dimensional elastic fracture problem is testified
and J integral problems can be reduced can be reduced to merely evaluation of potential
functions at points on the boun dary of a body without numerical integrals. Numerical
results are given to show that the accuracy of the method is very excellent. |
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