Experimental study on penetration effects of projectiles with different hardnesses on target

The hardness of projectile influences its penetration capability greatly. Three kinds of 30CrMnSiNi2A projectiles with different hardnesses penetrate ship-building steel in the experiments. The results show that the projectile break degree decreases with the increase of its hardness in a range of HRC41~47; the kinetic energy of the projectile with lower hardness is mostly consumed in the projectile break, and it can not form the penetration channel in the target; the kinetic energy of the projectile with high hardness is mostly consumed to enlarge hole in the target, and the projectile break occurs in the initial stage of impacting target, when the projectile tip impinge in the target, the projectile is hardly broken, the penetration capability of projectile increases with the increase of its hardness. The investigated results provide an important reference for analyzing projectile-target interaction and its relative design.