Numerical simulation study of composite targets with typical protective materials against shaped charge jet penetration

Abstract In order to study the law of composite target of typical protective materials against shaped charge jet penetration, five materials, namely corundum block concrete, high strength ceramic, reinforced concrete, armored steel and steel fiber concrete, were selected, and four composite target schemes were designed, and a three-dimensional model of shaped charge jet-air-composite target was established. Numerical simulation was carried out by using ANSYS/LS-DYNA software, and the composite target was analyzed in terms of the composite target invasion aperture diameter, invasion depth, and the morphology of the invasion aperture, respectively. The results show that: the composite target of the four schemes are stronger than the reinforced concrete target of the same size; the steel fiber concrete layer can effectively improve the composite target’s radial expansion ability, the corundum block concrete layer can make the direction of the jet penetration significantly shifted, the high-strength ceramic layer can effectively improve the composite target’s resistance to axial penetration, and the armored steel layer has a significant impact on the end section of the jet penetration process.