Dynamic response of projectile and charge during penetration into concrete target with high velocity

Abstract

To study the dynamic response characteristics of the penetrating warhead under the impact load, experiments of projectile penetration into a concrete target were performed based on a 30-mm ballistic gun. Penetration resistance model of the projectile penetration into the concrete target was modified by considering the wake separation and cratering effects associated with oblique penetration. The projectile deformation process during penetration was analyzed by the modified penetration model and validated by experimental results. In particular, the deformation, stress, and strain distribution characteristics of the projectile and charge were analyzed. Results show that during oblique penetration of the target by the projectile, the nose of projectile endures substantial compressive forces due to the compression wave. This results in considerable deformation within a region spanning from 0.32 to 0.59 times the projectile’s length from the nose. Additionally, a coupling effect of compression and tension waves induces significant transverse deformation at the projectile’s tail, spanning from 0.88 to 1.0 times the projectile’s length from the tail end.