• 中国科技核心期刊
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Volume 30 Issue 3
Jul  2022
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2022  >  30(3): 338-341
FENG Wei, LI Heng, LIU Hai-xiao, ZHAO Jiang, JIAO Jun-jie. Analysis of Influencing Factors of Underwater EFP Forming Based on Sandwich Charge[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 338-341. doi: 10.11993/j.issn.2096-3920.2022.03.009
Citation: FENG Wei, LI Heng, LIU Hai-xiao, ZHAO Jiang, JIAO Jun-jie. Analysis of Influencing Factors of Underwater EFP Forming Based on Sandwich Charge[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 338-341. doi: 10.11993/j.issn.2096-3920.2022.03.009
shu

Analysis of Influencing Factors of Underwater EFP Forming Based on Sandwich Charge

doi: 10.11993/j.issn.2096-3920.2022.03.009

  • 1. Naval Equipment Research Institute, Beijing 100073, China;

  • 2. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

  • Received Date: 2022-02-28
    Available Online: 2022-07-18
    Abstract
  • To study the influence of a sandwich charge structure on the underwater explosively formed projectile(EFP) forming process, a numerical simulation and analysis of an underwater EFP forming process of different sandwich charge structures were conducted using AUTODYN. With an increase in the air blast height in water, the forming speed and aspect ratio of the composite charge increased, and with an increase in the top width of the outer charge, the crushing speed difference at each Gaussian point of the charge hood decreased and the forming speed dropped gradually. Under the influence of water, the aspect ratio became increasingly smaller. A sandwich charge in water can reduce the influence of water on the EFP forming process and improve the EFP forming speed and posture. This study provides guidance for improving the power of EFPs in water.

     

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