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Chinese Journal of High Pressure Physics  > 2007  >  21(4): 439-443 .
WANG Qing-Song, LAN Qiang, DAI Cheng-Da. Effect of the Preheated Flyer on Hugoniot Measurements[J]. Chinese Journal of High Pressure Physics, 2007, 21(4): 439-443 . doi: 10.11858/gywlxb.2007.04.018
Citation: WANG Qing-Song, LAN Qiang, DAI Cheng-Da. Effect of the Preheated Flyer on Hugoniot Measurements[J]. Chinese Journal of High Pressure Physics, 2007, 21(4): 439-443 . doi: 10.11858/gywlxb.2007.04.018
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Effect of the Preheated Flyer on Hugoniot Measurements

doi: 10.11858/gywlxb.2007.04.018

  • Laboratory for Shock Wave and Detoation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China

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  • Corresponding author: WANG Qing-Song
  • Received Date: 25 Sep 2006
  • Rev Recd Date: 15 Dec 2006
  • Publish Date: 05 Dec 2007
    Abstract
  • A theoretical method was proposed to evaluate the Hugoniot parameters of the preheated metals based on Grneisen equation of state. This method offsets some disadvantages of BACT and can be used to estimate Hugoniot parameters of all kinds of solids with preheating in principle. This method was applied to calculate the Hugoniot parameters for Al and TC4 at different initial temperatures up to 1 200 K and compared the obtained results with the available data reported in literature. It is shown that the moderate preheating of metal does not result in an obvious deviation from its principal Hugoniot. Thus the rough treatment in hypervelocity impact experiments that the Hugoniot of preheated flyer is approximated to be the principal Hugoniot is reasonable.

     

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