| 单变量有限元的新思考:精化直接刚度法 |
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| 引用本文： | 陈万吉. 单变量有限元的新思考:精化直接刚度法[J]. 计算力学学报, 1993, 10(4) |
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| 作者姓名： | 陈万吉 |
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| 作者单位： | 大连理工大学工程力学研究所 大连 |
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| 摘 要： | 对单变量有限元和多变量有限元进行了综合分析和比较。其中包括有限元法的单元的可靠性问题:收敛性,坐标不变性,伪零能模式;单元的性能:计算精度,对畸变网格的适应性及解除闭锁、解的晃动现象等问题。进一步对单变量有限元提出新的思考,用精化直接刚度法发展单变量有限元,使之能兼备单变量有限元与多变量有限元之长,克服两者之短。
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| 关 键 词： | 单变量有限元 多变量有限元 精化直接刚度法 |
New Ideology of the Single Variable Model:the Refined Direct Stiffness Method |
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| Chen Wanji. New Ideology of the Single Variable Model:the Refined Direct Stiffness Method[J]. Chinese Journal of Computational Mechanics, 1993, 10(4) |
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| Authors: | Chen Wanji |
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| Abstract: | Integrated analysis and comparison of the single model and multivariable models of the finite element method are given in which the element reliability such as convergence, coordinate invariance and extra zero energy models and the performances of the element such as accuracy, sensitivity to geometric distortion, free form locking and solution oscillation have been discussed.An approach for improving the single variable model which is the refined direct stiffness method is suggested. |
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| Keywords: | single variable model multivariable model finite element method refined direct stiffness method |
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