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Journal of Projectiles, Rockets, Missiles and Guidance >

2013 , Vol. 33 >Issue 5: 99 - 101,108

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2013.05.003

PROJECTILES TECHNOLOGY

Numerical Simulation of Rotational Velocity on Shaped-charge Jet Formation

  • LI Rujiang ,
  • LU Zhiyan ,
  • FANG Zhijian ,
  • SUN Sujie
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  • 1 School of Chemical Engineering and Environment, North University of China, Taiyuan 030051, China
    2 No. 52 Institute of China Ordnance Industry, Shandong Yantai 264003, China

Received date: 2012-12-07

  Online published: 2025-05-26

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Abstract

Classical experimental results show that the shaped charge jet loses its penetration capability drastically under high values of an-gular velocity. Rotating shaped charge jet formation was simulated with finite-element code LS-DYNA3D, and compared with that of rota-ting shaped charge coupled with off-center initiation. The results show that it has no obvious effect on the jet head velocity under 4000r/min, when the angular velocity is 16000r/min, the jet head velocity decreases by 4.2%. The jet and slug diameter become thinner and the jet length become shorter with the angular velocity increase. Angular couple with eccentric initiation has serious effect on the jet formation, the shaped charge jet head has lower velocity under the condition that 16000r/min and eccentric distance 1mm, while the jet diameter be-comes larger than that of the only rotating shaped charge, and with the jet stretching, it will bifurcate into two thinner jets at the middle and back of the formed jet.

Key words： mechanics of explosion; shaped charge jet; angular velocity; eccentric initiation; numerical simulation

Cite this article

LI Rujiang , LU Zhiyan , FANG Zhijian , SUN Sujie . Numerical Simulation of Rotational Velocity on Shaped-charge Jet Formation[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2013 , 33(5) : 99 -101,108 . DOI: 10.15892/j.cnki.djzdxb.2013.05.003

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