Dynamic structural response of perforated plates subjected to water impact load

The objective of the present work is to investigate the dynamic structural response of perforated plates subjected to water impact load. A fully coupled ALE/FEM method, is used to simulate the fluid-structure coupling problem. The deformations of the plate and of the water are coupled through the hydrodynamic pressure subjected by the water on the plate, and the velocities of the structural particles affecting the deformation of the water. Considering plates with various numbers of openings resulting in a different degree of opening intensity, the structural deformations around the plate are analysed. The effects of the number, degree and location of the openings on the maximum distortion and recovering rate of the plate are analysed. The predictions of the plates' distortions at two typical time moments during the impact loading are estimated by the proposed mathematical equations.