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Journal of Projectiles, Rockets, Missiles and Guidance >

2021 , Vol. 41 >Issue 3: 115 - 118

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2021.03.025

Numerical Simulation of Fin EFP Forming and Aerodynamics

  • DING Feng 1, 2 ,
  • ZHAO Taiyong 2 ,
  • YANG Baoliang 3 ,
  • FU Jianping 2 ,
  • YIN Likui 2 ,
  • CHEN Zhigang 2 ,
  • WANG Weizhan 2
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  • 1 College of Mechatronics Engineering, North University of China, Taiyuan 030051, China
  • 2 National Defense Key Laboratory of Underground Damage Technology,North University of China, Taiyuan 030051, China
  • 3 Xi’an Modern Control Technology Research Institute, Xi’an 710065, China

Received date: 2020-09-01

  Online published: 2025-02-20

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Abstract

In order to study the formation of the Fin EFP and the aerodynamic characteristics during flight, LS-DYNA is used to simulate the formation process of the Fin EFP, and the FIin EFP will be obtained through UG software to realize the transmission of the shape data. The aerodynamic analysis is carried out with the fluid mechanics calculation software Fluent, and the aerodynamic parameters such as the drag coefficient, the lift coefficient and the stable reserve amount of the warhead at different detonation radii and different angles of attack are obtained. The results show that the detonation radius affects the length-diameter ratio and speed of the EFP, and then affects its lift coefficient, drag coefficient, and static stability reserve. Through comprehensive analysis, it is found that when the detonation radius is between 0.2D and 0.3D, it is more conducive to exert the damage effect of EFP.

Key words： EFP with fins; aerodynamic characteristics; multi-point initiation; numerical simulation

Cite this article

DING Feng , ZHAO Taiyong , YANG Baoliang , FU Jianping , YIN Likui , CHEN Zhigang , WANG Weizhan . Numerical Simulation of Fin EFP Forming and Aerodynamics[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2021 , 41(3) : 115 -118 . DOI: 10.15892/j.cnki.djzdxb.2021.03.025

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