A Study on Square Plate Dynamic Response under Underwater Explosion

To obtain more precise prediction of dynamic deformation, theoretical analysis and experimental investigations were carried out on the plasticity dynamic response of clamped square plates subject to underwater explosion loading in a water tank. Based on the principle of the energy equilibrium, the more reasonable deductive expressions were obtained for the final deflections of the shock wave upon the built-in plates subjected to the impulse loading, and the maximum large plasticity deformation solution were also obtained by the analytical plasticity method of equal-moment calculation. The different plastic deformations of the plates were measured for different charge weights and propagating distances. Both of the deformation displacements of test and theoretical calculation are quite agreement to within an about 10% discrepancy.