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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2012> 21(2): 150-156
JIANG Jian-wei, WANG Shu-you, ZHANG Mou, WEI Qiang. Modeling and simulation of JWL equation of state for reactive Al/PTFE mixture[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(2): 150-156.
Citation: JIANG Jian-wei, WANG Shu-you, ZHANG Mou, WEI Qiang. Modeling and simulation of JWL equation of state for reactive Al/PTFE mixture[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(2): 150-156.
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Modeling and simulation of JWL equation of state for reactive Al/PTFE mixture

  • State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • Received Date:2011-03-16
    Abstract
  • An analytical method is presented to fit parameters of Jones-Wilkins-Lee (JWL) equation of state (EOS) for the chemical process of aluminum-polytetrafluoroethylene (Al/PTFE) mixture. Subroutine codes for both strength model and EOS were developed in explicit-FE code AUTODYN. Firstly, the shock Hugoniot data of reactive Al/PTFE mixture was analytically derived by implementing this methodology. The JWL EOS was verified to fit shock Hugoniot data of both reacted and unreacted Al/PTFE mixture, which gives reasonable results. Furthermore, to numerically ascertain the reaction phases of ignition and growth and quasi detonation of Al/PTFE mixture, characterized experiment was setup to validate the reaction phases and coefficients of JWL EOS for Al/PTFE mixture. From the test, a promising example of reactive mixture Al/PTFE is capable to enhance lethality of weapons, the status computation in clude quasi-detonation pressure and temperature of Al/PTFE mixture in different chemical reaction phases is validated.
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