Theoretical analysis on the interface defeat of a conical-nosed projectile penetration

Based on Alekseevski-Tate model, the present paper theoretically analyses the interface defeat of a conical-nosed projectile in its penetration process, and the corresponding formulae of velocity decay and mass erosion of projectile are conducted out. The effects of half apex angle on the kinetic energy loss of conical-nosed projectile are discussed. A ballistic impact case of a small armor piercing projectile (APP) against ceramic/metal composite target validates the present theoretical scheme. In addition, the comparison of the kinetic energy loss during the interface defeat with among of a conical-nosed long rod, a small rod and a flat-nosed long APP is investigated.