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
Citation:
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
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
Citation:
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
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.
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