Numerical Simulation of Projectile Shape Effects on Craters in Hypervelocity Impact on Thick Alloy Aluminum Target

The numerical simulation of projectile shape effects on craters in hypervelocity impact on thick alloy aluminum target at normal angles has been carried out using the AUTODYN hydro-codes.The results of 2D and 3D simulation are given.The effect of projectile with different shapes and aspect ratios as well as impact orientations etc.on damage characteristics sizes and shapes of craters produced by hypervelocity impact on alloy aluminum targets have been investigated at the same mass and velocity.The simulation results are compared with the cratering created by spherical projectiles.It is shown that projectile has a larger aspect ratio,it has a larger crater depth;the damage sizes and shapes of craters created by non-spherical projectiles impact depend on the projectile shapes and impact orientations.