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Volume 35 Issue 2
Mar 2021
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Chinese Journal of High Pressure Physics  > 2021  >  35(2): 025301.
HUANG Binbin, FU Hua, YU Yin, LIU Cangli. Three-Dimensional Numerical Simulation of Explosive in Drop Hammer Impact Test and Sample Thickness Effect[J]. Chinese Journal of High Pressure Physics, 2021, 35(2): 025301. doi: 10.11858/gywlxb.20200636
Citation: HUANG Binbin, FU Hua, YU Yin, LIU Cangli. Three-Dimensional Numerical Simulation of Explosive in Drop Hammer Impact Test and Sample Thickness Effect[J]. Chinese Journal of High Pressure Physics, 2021, 35(2): 025301. doi: 10.11858/gywlxb.20200636
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Three-Dimensional Numerical Simulation of Explosive in Drop Hammer Impact Test and Sample Thickness Effect

doi: 10.11858/gywlxb.20200636

  • National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

  • Received Date: 13 Nov 2020
  • Rev Recd Date: 24 Nov 2020
    Abstract
  • In order to study the probability ignition behavior of explosive and the influence of sample thickness on ignition in drop weight test, a three-dimensional numerical simulation of brittle explosive PBX-2 is carried out. The three-dimensional numerical simulation method combining the finite element method and the discrete element method is adopted, and the non-uniformity of explosive material is considered. The ignition probability distribution of explosive under different falling height is obtained. The calculation result of falling height is consistent with the experimental result reported in literature. The influence of sample thickness on the temperature rise process and ignition threshold height of explosive in drop weight test is studied. The estimation formula of pressure peak value and ignition threshold with sample thickness is obtained by fitting, which can provide reference for experimental design.

     

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