Finite Element Modeling of Water Slamming on Sandwich Hull Structures

Abstract

This article evaluates the structural response of ship hull sandwich panels subjected to water slamming. Structural responses were obtained from several finite element (FE) model simulations developed by using the commercial code LS-DYNA. Models were analyzed for hull sandwich panels impacting initially calm surface water at two different deadrise angles 10 and 15, under three impact velocities, 5 m/s, 4 m/s, and 3 m/s. Structural responses were dependent of the slamming conditions as hydrodynamic pressures propagate from the keel to the chine. Panel’s deflection, core shear stresses, and skin tensile stresses showed to be decreased at lower impact velocities and higher deaderise angles. Keywords - Finite Element Analysis, FluidStructure Interaction, Sandwich Composite Hulls, Water Slamming.