Short Pulse Shock Initiation Criteria for HNS-Ⅳ Explosive

GUO Junfeng; ZENG Qingxuan; LI Mingyu; YU Qingxia

doi:10.11858/gywlxb.20170582

Volume 32 Issue 2

Jan 2018

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Chinese Journal of High Pressure Physics > 2018 > 32(2): 025101.

GUO Junfeng, ZENG Qingxuan, LI Mingyu, YU Qingxia. Short Pulse Shock Initiation Criteria for HNS-Ⅳ Explosive[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 025101. doi: 10.11858/gywlxb.20170582

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GUO Junfeng, ZENG Qingxuan, LI Mingyu, YU Qingxia. Short Pulse Shock Initiation Criteria for HNS-Ⅳ Explosive[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 025101. doi: 10.11858/gywlxb.20170582

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Short Pulse Shock Initiation Criteria for HNS-Ⅳ Explosive

doi: 10.11858/gywlxb.20170582

GUO Junfeng^{1, 2
,},
ZENG Qingxuan^{1, 2,*
,
,},
LI Mingyu^{1,*
,
,},
YU Qingxia¹

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
National Key Laboratory of Applied Physics and Chemistry, Shaanxi Applied Physics

Received Date: 18 May 2017
Rev Recd Date: 31 May 2017

Abstract

Abstract

Flyer shock-initiated HNS-Ⅳ explosive is an important topic in the research of the in-line explosive train.In this study, with the influence of the energy loading method, which may be electrical explosion, laser and micro charge detonation, and flyer material on the shock initiation taken into consideration, the parameters of pⁿτ and the James criteria for HNS-Ⅳ explosive were obtained according to flyer threshold velocity measured by literatures.Meanwhile, the process of initiating HNS-Ⅳ explosive the flyer driven by copper azides was simulated using the ANSYS/LS-DYNA program, based on whose results the parameters of pⁿτ and the James criteria for HNS-Ⅳ explosive were adjusted.It was found that the pⁿτ criteria for HNS-Ⅳ explosive should be adjusted to p^2.08τ>1.54 GPa^2.08·μs(0.001 μs <τ < 0.14 μs, 3.8 GPa <p < 28.0 GPa), while the James criteria should be adjusted to 0.215/Σ+0.108/E < 1.The two adjusted criteria, which might have a higher practicability, were consistent with the simulation results.
- shock initiation,
- HNS-Ⅳ,
- initiation criteria,
- numerical simulation

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References(14)

References

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Short Pulse Shock Initiation Criteria for HNS-Ⅳ Explosive

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