钨合金破片对钢板和铝板的高速穿甲实验及数值模拟

研究钨合金破片对有限厚钢板和铝板的穿甲效应. 采用12.7 mm滑膛弹道枪，57.5 mm/14.5 mm二级轻气炮以及通靶速度测试装置组成实验系统进行3g（直径7 mm）球形钨合金破片对9.64，11.78，14.81，15.89和17.9 mm厚Q235A钢板和10.16，20.38 mm厚2A12铝板的穿甲实验，通过实验获得球形钨合金破片对不同厚度金属板的弹道极限以及对Q235A钢板的极限贯穿厚度；采用扫描电镜（SEM）对实验后回收破片进行了微观结构特征观察，分析了不同弹靶作用条件下钨合金破片的失效机理. 进行了与实验相同弹靶结构的数值模拟研究，通过数值模拟研究了破片对金属板侵彻过程中的阻力变化特征. 结果表明，钢板较高的密度是存在极限贯穿厚度的主要原因.

High Velocity Armor-Piercing Experiment and Numerical Simulation of Tungsten Alloy Fragment Against Steel and Aluminum Plates

The armor-piercing effect regarding tungsten alloy fragment on the finite thickness steel and aluminum plates was researched. The experiment system using by 12.7 mm smooth bore ballistic gun, 57.5 mm/14.5 mm two-stage light-gas gun and velocity measurement equipment was setup. A series of terminal ballistic experiments with the 3g (diameter 7 mm) spherical tungsten alloy fragment against different thickness metal plates, including the thickness of 9.64, 11.78, 14.81, 15.89, 17.9 mm Q235A steel plates, and the 10.16, 20.38 mm 2A12 aluminum plates, were performed to get the ultimate pierced thickness. In addition, the micro structure characterizations of the residual penetrator were analyzed by scanning electronic microscopy (SEM), and the failure mechanism of tungsten alloy fragment under different conditions were obtained. At the same time, the numerical simulations with the same projectile-target action systems were performed, and the simulation results have good agreement with experimental data. The resistance variation properties of the fragment against metal plate were obtained. The high density of steel plate should be the main reason for the ultimate pierced thickness. The research results will be an important reference for further research on related issues.