DYNAMIC RESPONSE OF A TYPICAL SUBMARINE COMPARTMENT SUBJECTED TO UNDERWATER EXPLOSION

Based on the explicit finite element code ANSYS-LSDYNA,non-linear dynamic response of an immersed typical submarine compartment subjected to underwater explosion is analyzed. According to the theory of underwater explosion and numerical calculation results, the actions of shock wave, local cavitation and afterflow induced by expanding bubble in different phases of a single-hull submarine subjected to near-field underwater explosion are investigated in detail. the responses of the single-hull submarine subjected to near-field underwater explosion are computed and they are compared with those of the double-hull submarine. The results presented here are important not only for understanding the phenomena of underwater explosion, but also for anti-shock design of submarine structure.