Numerical Simulation of Penetration Process of Depleted Uranium Alloy Based on an FEM-SPH Coupling Algorithm

In order to quantitatively study the penetration capability of depleted uranium alloy, a simulation model bullet impact on target plate with FEM-SPH coupling algorithm was established by using LS-DYNA software, which combined Johnson-Cook intrinsic model, fracture criterion, and equation state conduct alloy bullets made tungsten high-strength steel penetrate at 1400 m/s initial velocity. The results show that under same conditions kinetic energy, velocity, volume, residual energy is 1.14 times 1.20 steel, velocity 1.18 volume 1.13 1.23 after completed. shape penetrating relatively sharp, diameter hole formed about 1.70 projectile, significantly larger than 1.54 1.39 indicating excellent performance alloy.