Modeling on mass abrasion of kinetic energy penetrator

An engineering model on mass abrasion of kinetic energy (KE) penetrator is presented to predict the nose shape and mass loss of the residual projectile after high speed penetration into concrete. The experimental analysis indicates that the kinetic energy of penetrator (i.e., mass and velocity of projectile) and the hardness of aggregate of concrete noticeably affect the mass abrasion of projectile. Generalized relationship between mass loss and impact function I of projectile is constructed. Graphical analysis shows that the most mass loss occur on the nose of projectile and the eroding nose approach to an ogival shape with a small value of caliber-radius-head (CRH). The mass loss from abrasion on KE penetrator may be evaluated through the variation of nose shapes.