起爆方式对杆式弹丸成型和穿甲的影响

用LS—DYNA软件模拟了中心点起爆、平面起爆和环形起爆方式下所形成的爆轰波波阵面、压力场及杆式弹丸的外形和速度分布。结果表明，平面起爆和环形起爆方式下形成的爆轰波对药型罩的压垮角小而压垮速度大，最终所形成的高速杆式弹丸速度和长径比都优于中心点起爆。采用实验方法研究了中心点起爆、环形起爆和三点同时起爆以及不同起爆半径对高速杆式弹丸的速度和穿甲能力的影响。实验结果表明，环形起爆和三点起爆后的弹丸速度和穿甲深度明显优于中心点起爆，大环起爆优于小环起爆，但对弹丸形状和穿孔孔径影响不明显。

Influence of Initiation Way on the Formation and Armor-piercing Performance of the Rod Projectile

The LS-DYNA software was applied to simulate the detonation wave front, pressure field and shape and velocity distribition of the rod projectile under center point initiation, plane wave initiation and annular wave initiation. The results indicated that the detonation waves formed under the plane wave initiation and annular wave initiation will collapse the liner with smaller angle and larger speed, and then their final velocities and length/ diameter rate of the high velocity rod projectile weve was better than those formed under point initiation. The effects of point initiation, annular initiation, three-point initiation and different initiation radius on the speed and armor piercing power of the rod projectiles were studied by experiments. The experimental results showed that the velocity and armor-piercing depth of the rod projectiles formed under annular initiation and three-point initiation exceeded those formed under the center point initiation significantly. The performance of large annular initiation was better than that of small annular initiation. But the effect of initiation ways on the shape of the rod projectile and perforating aperture was not obvious.