Analysis of numerical calculation methods for oblique penetration of projectiles into concrete targets

Abstract This article uses finite element software ANSYS/LS-DYNA to analyze the numerical simulation method of projectile oblique penetration into concrete targets. FEM method is commonly used for numerical simulation of projectile penetration into concrete targets, but there is a problem of large deformation of concrete when penetrating concrete targets obliquely, and FEM method is prone to mesh distortion. Based on the experimental results of oblique penetration of the projectile into concrete, this article uses FEM, SPH, and FEM-SPH numerical simulation methods to obtain the numerical simulation results of oblique penetration into concrete targets at different velocities and incident angles of the projectile. The results from the deflection angle of the projectile and the depth of the crater indicate that compared with using FEM and SPH methods separately, FEM-SPH method has higher consistency with experimental results in simulating the oblique penetration of the projectile into concrete.