Simulations of shock initiation of CL-20/HMX co-crystal

LIU Hai; LI Yi; LI Junling; MA Zhaoxia; CHEN Hong

doi:10.11883/bzycj-2019-0011

Volume 40 Issue 3

Mar. 2020

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LIU Hai, LI Yi, LI Junling, MA Zhaoxia, CHEN Hong. Simulations of shock initiation of CL-20/HMX co-crystal[J]. Explosion And Shock Waves, 2020, 40(3): 032102. doi: 10.11883/bzycj-2019-0011

Citation:

LIU Hai, LI Yi, LI Junling, MA Zhaoxia, CHEN Hong. Simulations of shock initiation of CL-20/HMX co-crystal[J]. Explosion And Shock Waves, 2020, 40(3): 032102. doi: 10.11883/bzycj-2019-0011

LIU Hai, LI Yi, LI Junling, MA Zhaoxia, CHEN Hong. Simulations of shock initiation of CL-20/HMX co-crystal[J]. Explosion And Shock Waves, 2020, 40(3): 032102. doi: 10.11883/bzycj-2019-0011

Citation:

LIU Hai, LI Yi, LI Junling, MA Zhaoxia, CHEN Hong. Simulations of shock initiation of CL-20/HMX co-crystal[J]. Explosion And Shock Waves, 2020, 40(3): 032102. doi: 10.11883/bzycj-2019-0011

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Simulations of shock initiation of CL-20/HMX co-crystal

doi: 10.11883/bzycj-2019-0011

Hypervelocity Impact Research Center, China Aerodynamics Research and Development Center, Mianyang 621000, Sichuan, China

Received Date: 2019-01-06
Rev Recd Date: 2019-11-27

Available Online: 2020-02-25

Publish Date: 2020-03-01

Abstract

Abstract

The shock compression and chemical reaction behaviors of CL-20/HMX energetic co-crystal explosives were simulated by nonequilibrium molecular dynamics. The spatio-temporal distributions of density, particle velocity, shock hugoniots, shock initiation pressure, and detonation pressure were obtained. The distribution of main intermediate products and the stable products were also investigated. The simulation results show that the initial reaction pathway is N—NO₂ cleavage to form NO₂ from CL-20 in co-crystal, with N₂, CO₂ and H₂O as the main products. The decomposition rate of CL-20 and HMX increases with the increase of shock wave velocity gradually, but the attenuation rate of CL-20 is higher than that of HMX under each shock condition.
- CL-20/HMX co-crystal,
- shock wave,
- shock Huguniot,
- chemical reaction

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References(30)

References

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