A multi-component Duan-Zhang-Kim mesoscopic reaction rate model for shock initiation of multi-component PBX explosives

BAI Zhiling; DUAN Zhuoping; WEN Lijing; ZHANG Zhenyu; OU Zhuocheng; HUANG Fenglei

doi:10.11883/bzycj-2018-0410

Volume 39 Issue 11

Nov. 2019

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BAI Zhiling, DUAN Zhuoping, WEN Lijing, ZHANG Zhenyu, OU Zhuocheng, HUANG Fenglei. A multi-component Duan-Zhang-Kim mesoscopic reaction rate model for shock initiation of multi-component PBX explosives[J]. Explosion And Shock Waves, 2019, 39(11): 112101. doi: 10.11883/bzycj-2018-0410

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A multi-component Duan-Zhang-Kim mesoscopic reaction rate model for shock initiation of multi-component PBX explosives

doi: 10.11883/bzycj-2018-0410

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing 100082, China
3.
Institute of Technical Physics, College of Science, National University of Defense Technology, Changsha 410073, Hunan, China

Received Date: 2018-10-26
Rev Recd Date: 2019-01-10

Available Online: 2019-09-25

Publish Date: 2019-11-01

Abstract

Abstract

This paper offers a new method for calculating the reaction rate of the pore collapse hot-spot ignition in multi-component PBX explosives, and proposes a new mesoscopic reaction rate model capable of describing and predicting the shock initiation and detonation behavior of multi-component PBX explosives with any explosive components proportion as well as any explosive particle size. The pressure-time histories in the explosive samples calculated using this mesoscopic reaction rate model are in good agreement with the experimental data. The shock initiation and detonation process of PBX explosives is mainly controlled by both the hot-spot ignition processes and the combustion reaction processes. The PBXC03 explosive with the dominant component of HMX is mainly controlled by the hot-spot ignition and shows the accelerated reaction characteristics. With the dominant component of insensitive TATB, the critical initiation pressure of PBXC10 is high and the shock initiation behavior is controlled by the combustion reaction process, which shows a stable reaction characteristics.
- shock initiation,
- multi-component PBX explosives,
- mesoscopic reaction rate model,
- reaction rate-time histories

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References(22)

References

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