关键词: 爆炸力学 , 侵彻 , 爆轰 , 混凝土 , SPH算法

Abstract: The numerical simulation of penetration-then-detonation of concrete with projectile was pre?sented using smooth particle hydrodynamic (SPH) algorithm. In the penetrative stage the projectile was divided into standard Lagrangian finite element meshes, but the concrete was divided into ^PH nodes. The finite element meshes of the projectile were converted into smooth particles before the cal?culation of detonations. Through the 2-D computations of the penetration-then-detonation to concrete target with projectile, the final volume of the crater at concrete target and the curve of pressure vs. time of the products and the curve of expanding velocity vs. time of warhead shell are obtained.

Key words: explosive mechanics , penetration , detonation , concrete , SPH algorithm