关键词: 爆炸力学 , 圆柱靶 , 有限元 , 冲击波 , 毁伤作用

Abstract: Numerical simulation for damage tests of cylindrical targets under fragments and shock waves was investigated by use of a nonlinear dynamic explicit finite element method. The damage ac?tion was modeled by separating the fragment and shock wave loading, which makes the model simple and ensures the simulating precision. The rationality of selection of material models and the stability of mesh division are verified by damage tests of cylindrical shell under shock wave. The simulation results were compared with the experimental results to validate the rationality and practicability of simulation model. The calculated results indicate that the fracture damage of cylindrical shells can be created ef?fectively by fragment and shock wave loading together under a warhead-target action distance.

Key words: explosion mechanics , cylindrical target , finite element method , shock wave , damage ac?tion