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Chinese Journal of High Pressure Physics  > 2011  >  25(1): 8-14 .
FU Hua, ZHAO Feng, TAN Duo-Wang, WANG Wen-Qiang, SHANG Hai-Lin. Mesoscale Simulation of Cavity Collapse Hot Spot Mechanism in HMX under Shock Loading[J]. Chinese Journal of High Pressure Physics, 2011, 25(1): 8-14 . doi: 10.11858/gywlxb.2011.01.002
Citation: FU Hua, ZHAO Feng, TAN Duo-Wang, WANG Wen-Qiang, SHANG Hai-Lin. Mesoscale Simulation of Cavity Collapse Hot Spot Mechanism in HMX under Shock Loading[J]. Chinese Journal of High Pressure Physics, 2011, 25(1): 8-14 . doi: 10.11858/gywlxb.2011.01.002
shu

Mesoscale Simulation of Cavity Collapse Hot Spot Mechanism in HMX under Shock Loading

doi: 10.11858/gywlxb.2011.01.002

  • National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621900, China

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  • Corresponding author: FU Hua
  • Received Date: 16 May 2009
  • Rev Recd Date: 30 Dec 2009
  • Issue Publish Date: 15 Feb 2011
    Abstract
  • The origin, ignition, growth of hot spot are the factors to understand shock initiation in heterogeneous explosive. The process of cavity collapse in HMX under shock loading was simulated using discrete element method. The results showed that the visco-plastic deformation formed hot spot mechanism and there was serious shear distortion around cavity under low impact. It was also found that the micro-jetting formed hot spot under high impact. The mesoscale process of hot spot formation and cavity collapse were gained.

     

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