双锥药型罩聚能射流侵彻钢靶板试验与高精度仿真

Biconical shaped charge has a stronger destructive effect on armored targets, and tests and high-precision Simulation are of great significance for improving destructive Performance of biconical shaped charge. Here, to investigate effects of different structures and materials of biconical shaped charges on penetration Performance of steel target plates, 5 different structures of biconical shaped charges liners were designed. At the same time, effects of different charge liner materials of copper and high entropy alloy as well as shells on penetration Performance of biconical shaped charge jet were considered, and static armor penetration tests of steel target plates were conducted using biconical shaped charges. Based on fluid elastoplastic governing equations, a high-precision Euler algorithm suitable for simulating formation and penetration of shaped charge jet was constructed. The algorithm was integrated as a computational program to simulate test working conditions. Numerical Simulation results and test ones were compared to verify the correctness of the independently constructed high-precision numerical method. The study results showed that for different structures of copper biconical shaped charge shields, with increase in inner cone angle, their jet head velocities decrease, jet lengths gradually decrease, effective penetration mass and penetration depth gradually increase; for copper and high entropy alloy shaped charge liners with the same structure, differences in their shaped charge jets' penetration diameters and depths are not large, high entropy alloy jet has a higher head velocity and a more consistent penetration diameter from top to bottom.