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Volume 33 Issue 4
Jul 2019
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Chinese Journal of High Pressure Physics  > 2019  >  33(4): 045105.
WU Xingxing, LIU Jianhu, ZHANG Lunping, ZHAO Yanjie, MENG Liping, CHEN Jiangtao. Influence of Different Material Constants Fitting Method on Predicting Warhead Impacting Metal Targets[J]. Chinese Journal of High Pressure Physics, 2019, 33(4): 045105. doi: 10.11858/gywlxb.20180661
Citation: WU Xingxing, LIU Jianhu, ZHANG Lunping, ZHAO Yanjie, MENG Liping, CHEN Jiangtao. Influence of Different Material Constants Fitting Method on Predicting Warhead Impacting Metal Targets[J]. Chinese Journal of High Pressure Physics, 2019, 33(4): 045105. doi: 10.11858/gywlxb.20180661
shu

Influence of Different Material Constants Fitting Method on Predicting Warhead Impacting Metal Targets

doi: 10.11858/gywlxb.20180661

  • China Ship Scientific Research Center, Wuxi 214082, China

  • Received Date: 16 Oct 2018
  • Rev Recd Date: 17 Jan 2019
    Abstract
  • Material constants played a significant role in the numerical prediction of warhead impacting metal targets, in order to obtain a set of valuable material constants fitting methods, JC strength model and JC failure model constants were acquired by different fitting method based on material mechanical properties and failure experiments. Simulation results were compared with experiment outcome in which different nose warhead penetrated different thickness metal plates, and it indicated: (1) simulation results could be distinct using JC strength model and JC failure mode constants from different fitting methods for the same material mechanical property tests; (2) JC strength model constants fitting by stress-strain curves using high reference strain rate were suitable for the numerical predicting warhead penetrating metal plates; (3) JC failure model constants fitting by initial stress triaxiality or average stress triaxiality had few influence on calculation results. This research could provide assistance for the material constants fitting method in numerical simulation.

     

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