| 对Stokes问题的几种杂交应力元含秩状况的讨论 |
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| 引用本文： | 陈大鹏,赵忠.对Stokes问题的几种杂交应力元含秩状况的讨论[J].西南交通大学学报,1988(4). |
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| 作者姓名： | 陈大鹏 赵忠 |
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| 摘 要： | Stokes流的杂交应力有限单元,可以由π_R型变分泛函出发,进行推导,这更便于在选择应力偏量场与压力场的早期控制单元含秩状态。Bratianu-Atluri的三种Stokes流杂交应力元,在单元一级上额外缺秩,皆含有兼容性多余机动模式,尤其无法形成在组合一级上的正确含秩的组合元。
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| 关 键 词： | 杂交应力法 斯托克斯流 含秩状态控制 |
Remarks on the Rank Situations of Several Types of the Hybrid-Stress Elements for Stokes Problem |
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| Chen Dapeng,Zhao Zhong.Remarks on the Rank Situations of Several Types of the Hybrid-Stress Elements for Stokes Problem[J].Journal of Southwest Jiaotong University,1988(4). |
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| Authors: | Chen Dapeng Zhao Zhong |
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| Institution: | Chen Dapeng;Zhao Zhong |
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| Abstract: | Hybrid-stress elements for Stokes problem can be formulated starting with the Reissner-typed variational functional to facilitate rank-control effort in early stages when deviatoric stresses and pressure assumptions are opted. Studies on the CPQSE-8, LPQSE-8 and QPQSE-8 hybrid-stress elements lead naturally to the identification of the spurious kinematic modes therein conceived on element level. Among them, the admissible spurious kinematic modes are specifically emphasized since it is impossible to have modes of such kind suppressed on paired- combination level. |
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| Keywords: | Hybrid stress fem stokes flow rank control |
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