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Acta Armamentarii ›› 2015, Vol. 36 ›› Issue (11): 2038-2044.doi: 10.3969/j.issn.1000-1093.2015.11.004

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Dynamic Constitutive Model of Gun Steel Material and Its Verification

ZENG Zhi-yin, GAO Xiao-ke, LIU Peng-ke, YU Hua-sa   

  1. (Northwest Institute of Mechanical and Electrical Engineering, Xianyang 712099,Shaanxi, China)
  • Received:2014-07-24 Revised:2014-07-24 Online:2016-02-02
  • Contact: ZENG Zhi-yin E-mail:zzy202@126.com

Abstract: The static and dynamic SHPB (split Hopkinson pressure bar) tests are made on a gun steel material at the temperature of 88~573 K and the strain rate of 0.001~2 000 s-1. The preliminarily obtained parameters of constitutive model of some gun steel material are verified and confirmed by the optimization procedure and Taylor impact test. The difference between the predicted and experimental results is less than 5%. The experimental results show that the proposed dynamic constitutive model can reflect the dynamic response of gun steel material under loads effectively.

Key words: ordnance science and technology, gun steel material, constitutive model, Hopkinson pressure bar test, Taylor impact test

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