The effect of hydroelasticity in numerical modeling of slamming

In the present study the slamming problem is simulated by numerical methods for investigating the hydroelastic effect during the slamming process. Slamming with two viewpoints of rigid and elastic structures (hydroelastic effect) had been modeled. Due to high impact speed of slamming، inertial and kinematic effects are quite evident in hydroelastic model. The results showed that considering hydroelastic effect especially in high impact speeds reduces the structural deformations and stresses in comparison with statically analysis. The effect of hydroelasticity is studied as a function of different parameters such as boundary condition، plate properties، wedge dead rise angle and impact velocity. Comparison of results for aluminum and steel plate showed that plate density and added mass has a determinant role in hydroelasticity. Finally hydroelasticity effect investigated for one high speed craft and observed that in direct design hydroelasticity effect reduces the plate thickness.