| 张建海,陈大鹏.考虑固体域几何非线性的固液耦合系统瞬态有限元分析[J].计算力学学报,1995,12(4): |
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| 考虑固体域几何非线性的固液耦合系统瞬态有限元分析 |
| Finite element analysis of solid-fluid interaction considering the geometric nonlinearitv of the solid |
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| DOI：10.7511/jslx19954067 |
| 中文关键词: 有限元法／固液耦合 几何非线性 T．L．列式 |
| 英文关键词:finite element method/solid-fluid interaction,geometric nonlinearity,T,L,formu-lation, |
| 基金项目:国家自然科学基金和国家教委博士点基金 |
| 张建海 陈大鹏 |
| 西南交通大学计算工程科学研究所 |
| 摘要点击次数: 1190 |
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| 中文摘要: |
| 本文基于理想可压缩流体压力传输方程及增量型ＴｏｔａＩＬａｇｒａｎｇｉａｎ列式，建立了考虑固体域几何非线性的固液耦合系统有限元方程，并开展了非线性分析工作。本文的方法可用于流体域远大于固体域，从而可仅仅研究固体域非线性响应的情况。由于流体域每个节点仅有一个未知量（压力），故流体域的计算规模得以大大减缩。同时，因为本文方法仅需对固体域进行非线性分析，故显著地简化了固液耦合非线性问题的求解工作。本文的方法亦可用于三维分析。 |
| 英文摘要: |
| Based on the pressure propagation equation of invisid,compressible fluid and incrementalTotal Lagrangian formulaion,the finite element equations of the solid-fluid interaction sys-tem are es-tablished.The method presented here is valid in such cases as the fluid domain be-ing much larger than the solid domain,so that only the nonlinearty of the solid needs to bestudied.Because there is only one unknown(pressure)at each nodal point of the fluid do-main,the computational effort for fluid is greatly reduced.At the same time,only the nonlin-earity of the solid domain needs to be studied,so that it is simplified to analyze the nonlinear-ity of the solid-fluid problems. The present method can be extended into 3-D analysis. |
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