Effects of Liner Material and Structure on Penetration Characteristics of Small-Diameter Shaped Charge

摘要

Based on the AUTODYN-2D nonlinear dynamics platform, numerical simulations and experiments are conducted to study the effect of 44mm small-caliber shaped charge on penetration characteristics. Copper as the suitable material is chosen for small-caliber shaped charges, and the influence of the cone and the thickness of liner on the penetration of the jet into the steel target is obtained. The results show that the penetration depth decreases with the growth of the cone angle. Moreover, with the thickness of liner increasing, the penetration depth increases first and then decreases. Based on the numerical simulation, structural parameters of the double cone liners were optimized: the optimum thickness liner was 1.2mm, and the optimal upper and lower cone of the double-cone liner was 40° and 60°. Besides, a static explosion test that the optimized double cone of the copper-type liner penetrated 45# steel targets is performed to verify the numerical simulation.