Numerical Simulation of Rigid Projectiles Penetration into Concrete Targets with Different Warhead Shapes

Abstract

When the projectiles with different head shapes impact and penetrate the concrete targets, the resistances of the target plates to the projectiles are significantly different, which is manifested by the time history curve of different accelerations, velocities and the penetration depths of the projectiles, resulting in the obvious differences of the penetration ability of the projectiles to the targets with a same compressive strength. In order to determine the influence degree of projectiles with different head shapes on the penetration ability, ANSYS/LS-DYN is adopted. The finite element numerical simulation software is used to simulate and analyze the three kinds of rigid projectiles: oval (including double oval and oval), conical (including double conical and conical) and cone oval. Among them, the projectiles all penetrated C40 concrete cylindrical targets vertically at an initial velocity of 700m/s. The results show that the penetration ability of the optimal oval, conical and cone oval projectile is gradually reduced, and the highest penetration ability is the oval projectile numbered as dan001, whose final penetration depth is 539cm.