Fragments' velocity of eccentric warheadwith double symmetric detonators

Wang Li; Han Feng; Chen Fang; Ma Xiaoqing

doi:10.11883/1001-1455(2016)01-0069-06

Volume 36 Issue 1

Oct. 2018

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Wang Li, Han Feng, Chen Fang, Ma Xiaoqing. Fragments' velocity of eccentric warheadwith double symmetric detonators[J]. Explosion And Shock Waves, 2016, 36(1): 69-74. doi: 10.11883/1001-1455(2016)01-0069-06

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Wang Li, Han Feng, Chen Fang, Ma Xiaoqing. Fragments' velocity of eccentric warheadwith double symmetric detonators[J]. Explosion And Shock Waves, 2016, 36(1): 69-74. doi: 10.11883/1001-1455(2016)01-0069-06

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Fragments' velocity of eccentric warheadwith double symmetric detonators

doi: 10.11883/1001-1455(2016)01-0069-06

National Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Received Date: 2014-06-30
Rev Recd Date: 2014-10-25
Publish Date: 2016-01-25

Abstract

Abstract

Eccentric warhead is a typical directional warhead, and its explosive wave is adjusted to improve the fragments' velocity in a specified area. The kinematic equation of a case was established in the polar coordinate system, and the Whitham method was adopted to realize the interaction of a double symmetric explosive wave, thus obtaining the trace of the triple wave point, the pressure and the height of the Mach stick, which were then calculated. By the combination of the kinematic equation and the Mach reflection, formula were deduced to evaluate the fragments' velocity in the Mach area. Comparison of the results obtained with AUTODYN 2D simulation shows that they are in good agreement. Double symmetric initiations increase the fragment's velocity by more than 30%, and the variation of the angle between initiations has little effect on the fragments' distribution and velocity.
- mechanics of explosion,
- Mach effects,
- AUTODYN software,
- eccentric initiation,
- explosive wave

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References

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