Study on Trajectory of Composite Penetrator Obliquely Penetrating Multilayer Steel Target

Abstract

In order to optimize the shape design of the projectile head, reduce the impact of head erosion on ballistic deflection during penetration, and then improve the ballistic stability of the projectile oblique penetration into multi-layer targets, a composite penetrator was designed. The ballistic deflection of the composite penetrator penetrating three-layer spaced steel target at the velocity of 500-800 m/s was calculated by ANSYS/LS-DYNA. The ballistic offset of the composite penetrator and the integral penetrator was compared, and the influence mechanism of the cap material on the trajectory of the composite penetrator was discussed. Experimental verification was carried out. The results show that in the velocity range of 500-800 m/s, the penetration of each layer and the final ballistic offset of the composite penetrator are significantly smaller than those of the integral penetrator. With the penetration velocity increasing from 500 m/s to 800 m/s, the ballistic stability increases by 54%, 50%, 60% and 32% respectively. At the penetration speed of 500 m/s, the total ballistic offset of 35CrMnSiA cap composite penetrator is slightly less than that of 93WNiFe cap composite penetrator. When the speed increases to 800 m/s, the final ballistic offset of 93WNiFe cap composite penetrator is less than that of 35CrMnSiA cap composite penetrator.