Numerical Study on the Slamming Impact of Wedge Shaped Obstacles considering Fluid-Structure Interaction (FSI)

摘要

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.