Simulation of variation of projectile nose during high-speed penetration into concrete

A formula for estimating total mass loss of projectile was developed with the assumptions of the peeling of molten surface in projectile nose as the primary cause of mass loss and the frictional heat totally accepted by projectile. In combination of the linear relationship between friction work and work done by pressure, the receding displacement of every point on projectile surface, which is vertical to the projectile symmetry axis, is obtained based on the formula for estimating total mass loss. Thereby, the variation of projectile shape is simulated. The shape of residual projectile, the depth of penetration (DOP) and projectile mass loss obtained by calculation are in good consistency with the corresponding experimental results.