Normal impact of ogive nosed projectiles on thin plates

Single plates of aluminium of various thicknesses were subjected to normal impact by ogive nosed projectiles at velocities normally greater than their ballistic limit. The observed values of the residual velocity and ballistic limit are presented and influence thereon of various parameters is discussed. Based on the mechanism of deformation observed and the data of residual and incident velocities, analytical and empirical relations have respectively been developed for the determination of both residual velocity and ballistic limit. These relations are seen to match the experiments well.