Jet formation behavior of damaged shaped charge warhead

被引：0
|
作者：
Wang Y.-Z. [1 ]
Yu Q.-B. [1 ]
Zheng Y.-F. [1 ]
Wang H.-F. [1 ]
机构：
[1] State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2016年 / 24卷 / 08期
关键词：
Active defense; Ammunition engineering; Fragment; Jet deviation; Shaped charge;
D O I：
10.11943/j.issn.1006-9941.2016.08.004
中图分类号：
学科分类号：
摘要：
Numerical simulations for the jet formation behavior and its terminal effect of damaged shaped charge warhead were carried out using the AUTODYN-3D to investigate the influence of hole location, hole depth and hole diameter on jet lateral velocity and its penetration ability. Results show that any hole in the shaped charge can increase the radial velocity obviously and cause deviation of jet from the axis,which even results in jet break up into small fragments and reduced the penetration ability of jet severely. Compared to the intact shaped charge, the penetration power for damaged shaped charge with hole diameter d=0.278 times charge diameter is reduced 24% on equal conditions. It is a fact that hole location and hole diameter are the main influence factors of radial velocity for jet. With distance between the hole and the top of liner decreasing, the radial velocity of jet increases significantly and the penetration depth of the target plate decreases. The radial velocity of jet is 19.0 m·s-1 for the hole location x=0 times of charge diameter. The radial velocity of the jet increases with the hole-diameter increasing and it can reach up to 41.1 m·s-1 for the hole diameter d=0.278 times of charge diameter. © 2016, Editorial Board of Chinese Chinese Journal of Energetic Materials. All right reserved.
引用
收藏
页码：747 / 751
页数：4
相关论文
共 11 条
  • [1] Perelman A., Shima T., Rusnak I., Cooperative differential games strategies for active aircraft protection from a homing missile, Journal of Guidance, Control and Dynamics, 34, 3, pp. 761-773, (2011)
  • [2] Farinella M.D., Hafer T.F., Moeller C., Et al., Vehicle protection system
  • [3] Meyer T.J., Active protection systems: impregnable armor or simply enhanced survivability, Armor Mag, pp. 7-11, (1998)
  • [4] Wey P., Fleck V., Chanteret P.Y., Analysis of active protection systems: when athena meets arena, Proceedings of the 19th International Symposium on Ballistics, pp. 905-912, (2001)
  • [5] Kashin V., Kharkin V., Active protection system for tanks, Military Parade, 5, pp. 32-35, (1996)
  • [6] Ma X.-F., Xu Y.-X., Li Y., Et al., Research on fragment impact initiation of simulating charge of shaped charge warhead, Tactical Missile Technology, 2, pp. 29-32, (2010)
  • [7] Pham J., Daniels A., Baker E., Et al., PIMS: particle impact mitigation sleeves, 24th International Symposium on Ballistics, (2008)
  • [8] Ayisit O., The influence of asymmetries in shaped charge performance, International Journal of Impact Engineering, 35, 12, pp. 1399-1404, (2008)
  • [9] John B., Softley I.D., Edwards P., Experimental study of shaped charges with built-in asymmetries, Propellants, Explosives, Pyrotechnics, 18, 5, pp. 255-258, (1993)
  • [10] Pack D.C., Curtis J.P., On the effect of asymmetries on the jet from a linear shaped charge, Journal of Applied Physics, 67, 11, pp. 6701-6704, (1990)
12