环形及线形聚能装药侵彻体对长杆式穿甲弹穿甲过程干扰的试验和数值模拟

为进一步提高聚能型爆炸反应装甲防护性能，增强坦克在战场上的生存能力，设计一种以环形聚能装药结构为基本结构的新型爆炸反应装甲，来拦截高速长杆式穿甲弹（简称长杆弹）。利用有限元软件ANSYS/LS-DYNA对环形爆炸成型结构干扰钨合金长杆弹穿甲过程进行数值模拟，分析了环形爆炸成型侵彻体成型过程及干扰长杆弹穿甲过程机理。在相同条件下，与线形爆炸侵彻体干扰长杆弹穿甲过程进行了对比。结果表明：环形聚能装药结构爆炸成型侵彻体具备更高的防御性能，长杆弹有效侵彻深度与线形装药结构相比降低32.5%，弹坑长度增加10.4%，且在环形爆炸侵彻体干扰下长杆弹弹杆断裂、偏航；模拟结果与试验结果吻合良好。

Test and Numerical Simulation for Annular and Linear Shaped Charge Projectiles Interfering the Penetrating Process of Long Rod Penetrators

A new explosive reactive armor based on the structure of annular shaped charge is designed to further improve the protective performance of explosive reactive armor and the survivability of tanks on the battlefield, which is used to intercept the high speed and large length-to-diameter ratio rod penetrators. The process of annular explosively formed projectile (EFP) interfering on the rod penetrators is numerically simulated using the finite element software ANSYS/LS-DYNA, and both the process of annular EFP forming and the mechanism of interfering on the armor piercing projectile are analyzed. Under the same conditions, the processes of interfering on the rod penetrators by linear and annular EFPs are compared. The results shows that EFP with annular shaped charge has the higher defense performance. The effective penetration depth of long rod projectile is reduced by 32.5% compared to EFP with linear shaped charge, and the length of crater is increased by 10.4%. The long rod projectile is broken and yaws under the interference of annular EFP. The simulated results are in good agreement with the test results.