| 基于组合杂交变分原理的4节点轴对称元 |
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| 引用本文： | 尹云辉,聂玉峰. 基于组合杂交变分原理的4节点轴对称元[J]. 数值计算与计算机应用, 2005, 26(1): 36-43 |
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| 作者姓名： | 尹云辉 聂玉峰 |
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| 作者单位： | 1. 西安理工大学理学院计算数学系,西安,710048
2. 西北工业大学理学院应用数学系,西安,710072 |
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| 摘 要： | 本文基于组合杂交变分原理推导四节点的轴对称元,依据能量协调条件,导出含有8个参数的轴对称应力模式.其优越性能突出表现在离散模型对于计算背景(如单元畸变和材料的不可压缩性等)的广泛适应性.数值算倒结果表明,该轴对称元位移和应力明显优于其它的轴对称元.
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| 关 键 词： | 组合杂交元 轴对称 高性能 能量协调 优化 |
| 修稿时间： | 2003-09-05 |
FOUR-NODE AXISYMMETRIC ELEMENT BASED UPON COMBINED HYBRID FUNCTIONAL |
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| Yin Yunhui,Nie Yufeng. FOUR-NODE AXISYMMETRIC ELEMENT BASED UPON COMBINED HYBRID FUNCTIONAL[J]. Journal on Numerical Methods and Computer Applications, 2005, 26(1): 36-43 |
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| Authors: | Yin Yunhui Nie Yufeng |
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| Abstract: | A new four-node axtisymmetric element is derived based on the combined hybrid variational principle. After the energy compatibility condition is applied to the linear stress with Wilson's bubble, a hybrid scheme of high performance using eight parameter stress fields is achieved. The resulting elements exhibit excellent performance at nearly incompressible limit and distortions of the element, geometry. Example problems all indicate that the new elements lead to better results in displacements and stresses than the other schemes. |
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| Keywords: | combined hybrid method axisvmmetric high performance energy compatibility optimization |
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