Investigation on interaction of explosively formed projectile with multi-layer medium targets

To investigate the influence of liner material, charge diameter and standoff on explosively formed projectile (EFP) penetrating into multi-layer targets, a large number of experiments were performed and the experimental data on crater diameter, hole diameter, crater depth and penetration depth were obtained. Meanwhile, the numerical simulation have been done to study the formation and penetration processes of all the EFP with AUTODYN software. The numerical results of penetration depth are in good agreement with the experimental ones. The results indicate that the optimal liner material of EFP to achieve a larger penetration hole diameter and depth are aluminum and copper, respectively.