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Journal of Projectiles, Rockets, Missiles and Guidance >

2024 , Vol. 44 >Issue 4: 72 - 81

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2024.04.009

Research on the Cushion Structure of Charge in High Speed Penetration Warhead

  • ZHAO Yifan 1, 2 ,
  • FU Jianping 2 ,
  • YANG Rui 1 ,
  • SHI Haotian 1, 2 ,
  • CHEN Zhigang 2 ,
  • ZHAO Weixing 3 ,
  • FU Liang 3 ,
  • KANG Yanshu 4
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  • 1 School of Mechanical and Electrical Engineering,North University of China,Taiyuan 030051, Shanxi,China
  • 2 Institute of Intelligent Weapons, North University of China,Taiyuan 030051, Shanxi,China
  • 3 Test and Measuring Academy of China Ordnance Industries, Huayin 714200, Shaanxi,China
  • 4 Jinxi Industrial Group Co., Ltd., Taiyuan 030027, Shanxi,China

Received date: 2023-04-25

  Online published: 2024-12-18

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Abstract

To study the influence of typical buffer structures and buffer materials on the protective performance of charge in ultra high speed penetration warheads, and to reduce the charge response caused by strong overload and harsh environment during penetration, numerical simulation of a warhead at a speed of 1 400 m/s penetrating a concrete target using LS-DYNA is carried out. By analyzing the mechanical response of unbuffered charges during projectile penetration, the direction of buffer structure design is determined, and the effects of different materials, thicknesses of buffer blocks and buffer layers on the charging environment are studied. The results show that the buffer block has a significant protective effect on the front section of the charge, and can significantly reduce the stress and overload peak of the charge; The buffer layer structure tends to improve the consistency of the overall stress changes of the charge, making the overall stress environment changes of the charge more uniform. The optimal buffer block structure is 30 mm thick polycarbonate, which can reduce the overload and stress peak of the charge by 20% and 34% respectively; The optimal buffer layer structure is 4 mm thick polytetrafluoroethylene, with a reduction of 19% and 9% in charge overload and stress peak, respectively.

Key words： penetration; buffer materials; buffer structure; numerical simulation; loading stress

Cite this article

ZHAO Yifan , FU Jianping , YANG Rui , SHI Haotian , CHEN Zhigang , ZHAO Weixing , FU Liang , KANG Yanshu . Research on the Cushion Structure of Charge in High Speed Penetration Warhead[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2024 , 44(4) : 72 -81 . DOI: 10.15892/j.cnki.djzdxb.2024.04.009

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