CHINESE JOURNAL OF ENERGETIC MATERIALS
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Influence of Initiation Point Position on Formation of MEFP
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School of Mechatronic Engineering,North University of China,School of Mechatronic Engineering,North University of China,School of Mechatronic Engineering,North University of China

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    Abstract:

    To study the influence of initiation point position on formation of circle-shaped multiple explosively formed projectile (MEFP), numerical simulation of the forming process of the circle-shaped MEFP was carried out with the ALE method using LS-DYNA, and the influence of the cutting reseau distance on radial dispersion angle was analyzed. Results indicate that such a charge structure can produce five pieces of sub-explosively formed projectile which has a definite mass, direction, and a velocity between 1600 m·s-1 and 2 400 m·s-1. Under fixed cutting reseau distance, with the increase of initiation point distance, the speed of MEFP increases, the radial dispersion angle of MEFP reduces gradually. The initiation point distance should be in a proper range from 0.56 to 0.89 times as long as Dk (Dk is the charge caliber) in order to form ideal sub-explosively formed projectile, and it has a best formation at 0.78 Dk.

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臧立伟,尹建平,王志军.起爆点位置对网栅切割式MEFP成型的影响[J].含能材料,2012,20(6):710-714.
ZANG Li-wei, YIN Jian-ping, WANG Zhi-jun . Influence of Initiation Point Position on Formation of MEFP[J]. Chinese Journal of Energetic Materials,2012,20(6):710-714.

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History
  • Received:June 18,2012
  • Revised:July 04,2012
  • Adopted:August 14,2012
  • Online: December 25,2012
  • Published: