Numerical simulation of ellipsoid shaped charge penetrating concrete

Abstract

Based on the finite element analysis with centered finite difference, this paper focuses on 3-D analysis of three kinds of shaped charge penetrating to concrete. The process of forming penetrators is depicted in the test together with the process of penetration, which shows that under the same condition of diameter, the one with higher axis can form the rod-shaped penetrator with high velocity, large slenderness and rational mass distribution, but the effectiveness of caviting is much worse than the other two. Under the concrete model of Johnson-Holmquist-Concrete(JHC), the process of concrete board damage are analyzed, and we also obtained the data related to the depth and the cavity radius at the same time. Penetration and damage of concrete target simulated agree well with test-data, which indicate that: the simulation in this paper is feasible and reliable. © 2011 Shanghai Jiaotong Univ.