超空泡射弹水下毁伤特性研究

Based on the finite element software ANSYS/LS-DYNA and the fluid-solid coupling technology, the process of the underwater supercavitating projectile penetrating metal target board were studied by numerical simulation. Then the supercavitation high-speed projectile model and the penetration target were built, and according to the ballistic characteristics of the high-speed projectile, the suitable computational domain and mesh for projectile and target plate were designed. The structural damage of the projectile and the penetrating characteristics were obtained on the condition of underwater movement. Compared with the penetration characteristics of the projectile in different medium, the result shows that the exit holes of target board in water is bigger than that in the air under the same velocity ,and the maximum stress are almost the same.