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任意的拉格朗日欧拉边界元-有限元混合法分析物体撞水响应
引用本文:钱勤,黄玉盈,王石刚,刘志宏,赵宇征,朱达善.任意的拉格朗日欧拉边界元-有限元混合法分析物体撞水响应[J].固体力学学报,1994(1).
作者姓名:钱勤  黄玉盈  王石刚  刘志宏  赵宇征  朱达善
作者单位:武汉华中理工大学
摘    要:计算物体的撞水响应目前已有了一些专用的算法.本文在分析和比较这些算法的基础上,提出了一个解撞水问题的任意的拉格朗日欧拉边界元-有限元混合法(ALE-BE-FEM),这个方法不仅充分发挥了边界元法计算半空间流场的优越性,而且还能计及液面大晃动的非线性边界条件和物体变形所造成的影响.文中给出圆柱刚体和楔形刚柱体两个撞水算例,结果有力表明该方法的可靠性和有效性。

关 键 词:撞水响应,有限元法,边界元法,液面大晃动,液固相互作用

FLUID-STRUCTURE IMPACT ANALYSIS WITH A MIXED METHOD OF ARBITRARY LAGRANGIAN-EULERIAN BE AND FE
Qian Qin, Huang Yuying, Wang Shigong, Liu Zhihong, Zhao Yuzheng, Zhu Deshan.FLUID-STRUCTURE IMPACT ANALYSIS WITH A MIXED METHOD OF ARBITRARY LAGRANGIAN-EULERIAN BE AND FE[J].Acta Mechnica Solida Sinica,1994(1).
Authors:Qian Qin  Huang Yuying  Wang Shigong  Liu Zhihong  Zhao Yuzheng  Zhu Deshan
Abstract:A mixed method of arbitrary Lagrangian-Eulerian boundary element and finite element is proposed for treating the impact of a deformable structure with an inviscid and incompressible fluid. This method enables us to analyze the effect of nonlinear free surface conditions of the impact response. Two examples of an impacting cylinder and an impacting wedge into initially calm water are presented. It shows that the proposed method is effective for solving the fluid-structure impact problems with a serious nonlinearities.
Keywords:fluid-structure impact response  finite element method  boundary element method  large-amplitude sloshing  fluid-structure interaction
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