| 相似等参单元 |
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| 引用本文： | 郭仲衡.相似等参单元[J].科学通报,1979,24(13):577-577. |
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| 作者姓名： | 郭仲衡 |
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| 作者单位： | 北京大学数学力学系 |
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| 摘 要： | 在二维的有限单元法里,为了解决内角大于π的边界角点上解的奇性问题,发展了无限相似单元法.文献1,2]用于解决LaPlace方程的边值问题,文献3]用于解决二维线性弹性断裂力学问题(这时裂纹尖端的内角等于2π)。这些工作的要点在于利用相似三角形单元有相
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SIMILAR ISOPARAMETRIC ELEMENTS |
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| Institution: | Guo ZHONG-HENG |
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| Abstract: | In this paper the concept of similar elements has been extended to the ease of highly accurate but arbitrary isoparametric elements. For lack of special expressiona for the stiffness matrix for isoparametric elements, some demonstrations are required.By means of finite similar isoparametrie element schemes the problem of stress concentration can be solved with high accuracy; and the computation problem of the stress-intensity factor can also be solved with the help of infinite similar isoparametrie elements. |
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