Simulation study on penetration depth of spherical fragments into concrete

Abstract

In order to study the influence of different spherical fragments on the penetration depth of concrete targets, AUTODYN-2D software is used to model and simulate the penetration of fragments with different diameters, materials and velocities. Through the analysis of penetration depth data, it is found that the penetration depth of tungsten alloy fragments will not continue to increase at higher speeds (when v > 1400 m / s, the penetration depth of tungsten alloy fragments begins to decrease). The process of spherical fragment penetrating concrete is analyzed, and the relationship between the penetration depth and the velocity, diameter, material parameters and concrete strength of spherical fragment is clarified. The simulation results show that the penetration depth curve parameters of different materials are quite different, due to the high utilization rate of tungsten alloy fragments, the calculation formula of penetration depth of tungsten alloy spherical fragments with respect to fragment parameters is obtained by fitting the penetration data. The penetration depth of tungsten alloy spherical fragments under different diameters and velocities can be predicted accurately by this formula.