Penetration of a hypervelocity shaped charge into layered and spaced concrete targets

With the increase in the concrete thickness for protection engineering and the development of various novel concrete structures, as an important anti-hard target warhead, the conventional conical shaped charge (CSC) may not be effective against concrete targets. To increase the penetration depth of the CSC on concrete targets, a comparative study between hypervelocity shaped charge (HSC) and CSC into concrete layered and spaced targets were performed at different standoff distances. Furthermore, the effect of the thickness of the tungsten slab on the formation of HSC was investigated by simulations and experiments. The results indicated that, as the thickness (K) of the tungsten slab increases from 2.5 to 10.0 mm, the velocity of the projectile formed by HSC first increases and then decreases. A similar trend was observed for the penetration depth of HSC into the layered concrete targets. The penetration depth of layered targets caused by HSC with K = 7.5 mm increased by 31.3% than that formed by CSC.