Numerical simulation of detonation parameters for PETN, RDX and HMX explosives

LI De-hua1; CHENG Xin-lu; YANG Xiang-dong; WU Guo-dong

doi:10.11883/1001-1455(2005)04-0325-05

Volume 25 Issue 4

Dec. 2014

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Article Navigation > Explosion And Shock Waves > 2005 > 25(4): 325-329

LI De-hua1, CHENG Xin-lu, YANG Xiang-dong, WU Guo-dong. Numerical simulation of detonation parameters for PETN, RDX and HMX explosives[J]. Explosion And Shock Waves, 2005, 25(4): 325-329. doi: 10.11883/1001-1455(2005)04-0325-05

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LI De-hua1, CHENG Xin-lu, YANG Xiang-dong, WU Guo-dong. Numerical simulation of detonation parameters for PETN, RDX and HMX explosives[J]. Explosion And Shock Waves, 2005, 25(4): 325-329. doi: 10.11883/1001-1455(2005)04-0325-05

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Numerical simulation of detonation parameters for PETN, RDX and HMX explosives

doi: 10.11883/1001-1455(2005)04-0325-05

1.
Institute of Atomic and Molecular Science, Sichuan University, Chengdu 610065, Sichuan, China;
2.
Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China

Publish Date: 2005-07-25

Abstract

Abstract

The equilibrium compositions of detonation products of PETN, RDX and HMX explosives are calculated by solving chemical equilibrium equations based on minimizing Gibbs free energy. The results are in good agreement with the results obtained based on BKW and LJD equations of state. The Gibbs free energy of carbon is calculated based on the most probable state of dissociated carbon in detonation products, which is determined by distinguishing the following four states of carbon: graphite, diamond, graphitelike and diamondlike.The WCA equation is taken as the equation of state of detonation products, and the detonation properties of PETN, RDX and HMX explosives are calculated. The detonation velocity, pressure and temperature at CJ point are in good agreement with the experimental data.
- mechanics of explosion,
- detonation parameters,
- Gibbs free energy,
- detonation products,
- equation of state,
- numerical simulation

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