| 边界元区域积分奇异性的半解析处理法 |
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| 引用本文： | 许晶月,杜善义,孟庆元. 边界元区域积分奇异性的半解析处理法[J]. 哈尔滨工业大学学报, 1993, 0(2) |
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| 作者姓名： | 许晶月 杜善义 孟庆元 |
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| 作者单位： | 哈尔滨工业大学航天学院，哈尔滨工业大学航天工程与力学系，哈尔滨工业大学航天工程与力学系 讲师 |
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| 摘 要： | 本文提出一种处理二维弹塑性边界元区域奇异积分的半解析方法。首先通过三角极坐标变换降低奇异阶数,对八节点等参元,可利用其形状函数和基本解的特点消除强奇异性。最终得到的计算式简明易于程序实现,算例结果表明了该方法的有效性。
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| 关 键 词： | 边界元 弹塑性 坐标变换 奇异性 |
A Semi-Analytical Method to Handle Singular Regional Integrals of BEM |
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| Xu Jingyue Du Shanyi Meng Qingyuan. A Semi-Analytical Method to Handle Singular Regional Integrals of BEM[J]. Journal of Harbin Institute of Technology, 1993, 0(2) |
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| Authors: | Xu Jingyue Du Shanyi Meng Qingyuan |
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| Affiliation: | Department of Astronautics and Mechanics |
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| Abstract: | A semi-analytical method to handle the singular regional intergrals of 2-Delasto-plastic BEM is reported in this paper.The singular integrals is reduled by one orderby introduing triangle polar coordinates and can be eliminated finally by using the featureof quadratic shape function and fundamental solution.The expressions obtained finally aresimple and can be programmed easily.The calculational results show the validity of this meth-od. |
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| Keywords: | BEM elasto-plasticity coordinate transformation singutarity |
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