Numerical Simulation of Double-Layer Plate Structure Destroyed by Underwater Contact Explosion

Because the experiment of underwater explosion is not easy to perform, numerical simulation of double-layer plate structures destroyed by underwater contact explosion was performed using finite element method(FEM). The results of crevasse form, and response curves of displacement, effective stress and pressure versus time of the double-layer structures under explosion load were gained and compared with the responses of the flat plate model and the stiffened plate model under same explosion load. This reseach may be applied in designs of submarine, ship as well as torpedo warhead.