Numerical Study On the Slamming Impact of Wedge Shaped Obstacles Considering Fluid-Structure Interaction (FSI)
Numerical Study On the Slamming Impact of Wedge Shaped Obstacles Considering Fluid-Structure Interaction (FSI)
复制标题
考虑流固耦合（FSI）的楔形障碍物撞击影响数值研究
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
M. Oka
中科院分区：
文献类型：
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作者：
Yasuhira Yamada;Tomoki Takami;M. Oka
本研究的目的是研究船舶砰击冲击以及探讨适用的非线性显式有限元程序LS-DYNA船舶砰击冲击模拟。本文利用LS-DYNA软件进行了一系列二维砰击碰撞数值模拟，其中海水采用欧拉实体单元，楔形体采用拉格朗日壳单元。在时域模拟的每一个时间步中，通过耦合流体分析和结构分析来考虑流固耦合效应。为了验证数值模拟的正确性，对刚性楔体入水进行了数值模拟，并与传统的瓦格纳理论计算结果进行了比较。
The purpose of the present study is to investigate slamming impact of ships as well as to investigate applicability of nonlinear explicit finite element code LS-DYNA to simulations of slamming impact of ships. In this study a series of two-dimensional slamming impact simulations were carried out with using LS-DYNA where sea water is modeled by Euler solid elements and wedge is modeled by Lagrange shell elements. Fluid structure interaction (FSI) is taken into account by coupling fluid analysis and structural analysis in each time step of time domain simulations. In order to validate numerical simulation, water entry of rigid wedge is simulated, and pressure distribution and slamming impact estimated by simulations are compared with those by conventional Wagner theory.