| 惩罚函数法在三维等参杂交元的应用 |
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| 引用本文： | 陈道政,焦兆平.惩罚函数法在三维等参杂交元的应用[J].应用数学和力学,2005,26(8):929-936. |
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| 作者姓名： | 陈道政 焦兆平 |
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| 作者单位： | 1. 合肥工业大学,土木建筑工程学院,合肥,230009
2. 番禺职业技术学院,广州,511483 |
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| 摘 要： | 提出在等参杂交元中用惩罚函数法引入平衡约束条件，具体讨论了惩罚函数法在三维等参杂交元中的运用，并提出采用分项罚数的方法，建立最佳的罚平衡杂交元模型．罚平衡法可以在不增加自由度的前提下，有效地扼制寄生应力．数值实验表明，新建立的单元，可以有效地抑制单元畸变对计算精度的影响，从而大幅度提高畸变网格下的计算精度，方法带有普遍性．
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| 关 键 词： | 惩罚函数法 杂交元 三维 应用 计算精度 约束条件 数值实验 单元畸变 畸变网格 自由度 平衡法 元模型 大幅度 普遍性 |
| 文章编号： | 1000-0887(2005)08-0929-08 |
| 修稿时间： | 2004年4月16日 |
Application of Penalty Function Method in Isoparametric Hybrid Finite Element Analysis |
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| CHEN Dao-zheng,JIAO Zhao-ping.Application of Penalty Function Method in Isoparametric Hybrid Finite Element Analysis[J].Applied Mathematics and Mechanics,2005,26(8):929-936. |
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| Authors: | CHEN Dao-zheng JIAO Zhao-ping |
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| Institution: | CHEN Dao_zheng~1,JIAO Zhao_ping~2 |
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| Abstract: | By aid of the penalty function method, the equilibrium restriction conditions were introduced to the isoparametric hybrid finite element analysis, and the concrete application course of the penalty function method in three_dimension isoparametric hybrid finite element was discussed.The separated penalty parameters method and the optimal hybrid element model with penalty balance were also presented. The penalty balance method can effectively refrain the parasitical stress on the premise of no additional degrees of freedom. The numeric experiment shows that the presented element not only is effective in improving greatly the numeric calculation precision of distorted grids but also has universality. |
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| Keywords: | hybrid element equilibrium restriction condition penalty function method |
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