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Chinese Journal of High Pressure Physics  > 2006  >  20(2): 172-178 .
DENG Xiao-Liang, ZHU Wen-Jun, LUO Jin, HE Hong-Liang, WU Deng-Xue, JING Fu-Qian. Numerical Simulation of Shock Wave Structure in Single Crystal Copper[J]. Chinese Journal of High Pressure Physics, 2006, 20(2): 172-178 . doi: 10.11858/gywlxb.2006.02.010
Citation: DENG Xiao-Liang, ZHU Wen-Jun, LUO Jin, HE Hong-Liang, WU Deng-Xue, JING Fu-Qian. Numerical Simulation of Shock Wave Structure in Single Crystal Copper[J]. Chinese Journal of High Pressure Physics, 2006, 20(2): 172-178 . doi: 10.11858/gywlxb.2006.02.010
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Numerical Simulation of Shock Wave Structure in Single Crystal Copper

doi: 10.11858/gywlxb.2006.02.010
  • 1.

    Department of Physics, Sichuan University, Chengdu 610064, China;

  • 2.

    Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China;

  • 3.

    Research Center of High Pressure Physics, Sichuan Normal University, Chengdu 610068, China

More Information
  • Corresponding author: ZHU Wen-Jun
  • Received Date: 16 Jun 2005
  • Rev Recd Date: 09 Sep 2005
  • Publish Date: 05 Jun 2006
    Abstract
  • The structure of shock wave in single crystal copper has been studied by means of molecular dynamics (MD) method with a realistic embedded atom potential at initial condition of zero temperature. The simulation results indicate that the after-shock state will evolve to thermodynamic equilibrium state even initial state is zero temperature. By means of local analysis and calculation, time history of the distribution of pressure, particle velocity, strain and kinetic temperature after the shock front were obtained. The pressure, particle velocity, and strain increase and arrive at the stable condition within time period about 1 ps when shock pressure is about 262 GPa. The kinetic temperature always keeps maximum value in shock wave front and the nonzero temperature region broadens behind the shock wave as time passes by. After evolution of a critical time, the particle velocity in the after-shock region reaches a typical Maxwell distribution which means it reaches equilibrium state. The further analysis indicates that local equilibrium is an elemental course when the whole system evolves to thermodynamic equilibrium state.

     

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