Simulation on Structural Response of Torpedo-Target Collision

In view of the particularity and complexity of target structure and collision environment in the collision process of a torpedo and a target, the internal mechanism of ship collision is utilized and the fluid-solid coupling and additional mass method are employed to carry out finite element simulation of the structural response of a torpedo when it hits a target. The structural damage of a target and the variation of torpedo velocity and acceleration during collision are studied. Simulation results show that: 1) The hitting process has strong nonlinear characteristics, and the hitting angle has a certain influence on the motion of a torpedo and the deformation of a target; 2) The higher the torpedo hitting velocity is, the higher the peak acceleration response of torpedo head and the damage degree of target become. This research may provide a reference for the structure design and dynamic characteristic design of targets.