Numerical simulation for analyzing shock to ignition of PBXs with different compositions in meso-structural level

Wang Chen; Chen Lang; Liu Qun; Pi Zheng-di; Hu Xiao-mian

doi:10.11883/1001-1455(2014)02-0167-07

Volume 34 Issue 2

May 2014

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Wang Chen, Chen Lang, Liu Qun, Pi Zheng-di, Hu Xiao-mian. Numerical simulation for analyzing shock to ignition of PBXs with different compositions in meso-structural level[J]. Explosion And Shock Waves, 2014, 34(2): 167-173. doi: 10.11883/1001-1455(2014)02-0167-07

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Numerical simulation for analyzing shock to ignition of PBXs with different compositions in meso-structural level

doi: 10.11883/1001-1455(2014)02-0167-07

Wang Chen^{1, 2},
Chen Lang^{1
,
,},
Liu Qun¹,
Pi Zheng-di¹,
Hu Xiao-mian²

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing100081, China
2.
Institute of Applied Physics and Computational Mathematics, Beijing100094, China

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Corresponding author: Chen Lang, chenlang@bit.edu.cn
Received Date: 2012-09-03
Rev Recd Date: 2012-11-02
Publish Date: 2014-03-25

Abstract

Abstract

By considering the particle size, location in random distribution and the composite content, a three-dimensional computation model was developed for explosive particles in free deposition.The pressing process of the explosive particles from free deposition to molded explosives was numerically simulated by using the non-linear finite element method.Based on the above, the meso-structural models of PBXs(HMX+TATB+Estane)were established.Thereby, numerical simulations were conducted to analyze the shock-to-ignition processes of the PBXs with different compositions in the meso-structural level.In the above numerical simulations, the thermo-mechanical coupling effect and the self-sustained thermal reaction within the PBXs were taken into account.The influences of the composition contents on the shock-to-ignition performances of the PBXs were discussed.The simulated results show that the composite explosives containing HMX and TATB become less sensitive as the TATB content in them increases.
- mechanics of explosion,
- meso-structural model,
- three-dimensional calculation model,
- PBXs,
- shock to ignition

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References(8)

References

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