Influence of rotation on damage power of an explosively-formed rod-like penetrator
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摘要: 为进一步提高周向多爆炸成型侵彻体战斗部的毁伤效能，结合数值模拟方法，设计了一种爆炸成型杆式侵彻体战斗部。基于复合装药的爆轰加载控制方式，使得药型罩成型为密实的杆式侵彻体，通过调整半预制药型罩的斜置角度，对毁伤元的旋转速度施加控制，进而提高其空中飞行姿态的稳定性，提高毁伤元的毁伤威力。对不同斜置角度的战斗部原理样机进行了静爆实验，实验结果与模拟结果的对比表明，半预制药型罩斜置角度为1.5°时，爆炸成型杆式侵彻体的着靶姿态最好，对45钢靶板侵彻深度最大。通过药型罩斜置，在保证杆式侵彻体成型质量的同时，可以有效提高侵彻体的侵彻威力。Abstract: In order to further improve the damage efficiency of a multiple explosively-formed penetrator warhead, the multiple explosively-formed rod-like penetrator warheads were designed by composite charge and were researched by numerical simulation. Based on the detonation loading control method by composite charge, the liners can be formed to be dense rod-like penetrators. By adjusting the oblique angle of a half-prefabricated liner, the rotation speed of the penetrator is controlled and the stability of its flight attitude in the air is controlled. And then, the damage power of the penetrator was improved. The principle prototypes of the warheads with different oblique notching angles were designed and the static blasting experiments were performed. The comparison between the experimental results and the numerical simulation ones displays that the impact attitude of the explosively-formed rod-like penetrator is the best and its penetration into the steel-45 plate is the deepest, when the oblique angle is 1.5°. At the base of ensuring the formed quality, the penetration power of the rod-like penetrator can be improved significantly by obliquely placing the liner.
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Key words:
- warhead /
- liner /
- composite charge /
- rod-like penetrator /
- flight stability
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图 1 爆炸成型杆式侵彻体自旋转示意图
Figure 1. Schematic of rotation of an explosively-formedrod-like penetrator
图 2 药型罩斜置战斗部原理样机结构
Figure 2. Structure of the principle prototype of the warhead with obliquely-placed liner
图 3 Ø127 mm战斗部模拟模型及杆式侵彻体的成型过程
Figure 3. The simulation model for the Ø127 mm warhead and the formation process of the rod-like penetrator
图 4 药型罩斜置不同角度的侵彻体成型结果
Figure 4. Forming results of penetrators for liners with different oblique angles
图 10 杆式侵彻体实验侵彻结果
Figure 10. Penetration results of experiments on rod-like penetrators
图 11 杆式侵彻体模拟侵彻结果
Figure 11. Penetration results of simulations on rod-like penetrators
表 1 自旋转的模拟结果和理论计算结果
Table 1. Simulation result and theoretical calculation result of rotation
倾斜角度/(°) 模拟切线速度/(m·s-1) 模拟角速度/(rad·s-1) 理论切线速度/(m·s-1) 理论角速度/(rad·s-1) 1 47.3 0.81×103 42.5 0.79×103 2 94.6 1.62×103 85.5 1.49×103 
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