Calculation analysis of rod-shaped projectile penetrating into concrete targets

A model of calculation analysis for rod-shaped projectiles penetrating into a concrete target was presented.First the judging criterion of penetration model was put forward based on the change in the material's state.The strength parameters of the concrete target was derived based on the quasi-static cavity expansion theory and then was applied to differentiating penetration models.The empirical model of hyper-velocity projectile penetrating into thick targets was analyzed by the method of dimension analysis and the empirical formula of rod-shaped projectile penetrating into concrete targets was brought forward.