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Volume 31 Issue 3
Apr 2017
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Chinese Journal of High Pressure Physics  > 2017  >  31(3): 239-248.
LI Lei, ZHANG Xian-Feng, WU Xue, GAO Fei, LIU Chuang. Dynamic Constitutive and Damage Parameters of 30CrMnSiNi2A Steel with Different Hardnesses[J]. Chinese Journal of High Pressure Physics, 2017, 31(3): 239-248. doi: 10.11858/gywlxb.2017.03.005
Citation: LI Lei, ZHANG Xian-Feng, WU Xue, GAO Fei, LIU Chuang. Dynamic Constitutive and Damage Parameters of 30CrMnSiNi2A Steel with Different Hardnesses[J]. Chinese Journal of High Pressure Physics, 2017, 31(3): 239-248. doi: 10.11858/gywlxb.2017.03.005
shu

Dynamic Constitutive and Damage Parameters of 30CrMnSiNi2A Steel with Different Hardnesses

doi: 10.11858/gywlxb.2017.03.005

  • School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

  • Received Date: 06 Sep 2016
  • Rev Recd Date: 14 Dec 2016
    Abstract
  • To find out about the effect of hardness on the dynamic behavior and the damage parameters of 30CrMnSiNi2A steel, we investigated the quasi-static and dynamic mechanical properties of different steel alloys with the hardness of 31HRC, 36HRC, 45HRC and 55HRC using a universal material testing machine and a split Hopkinson pressure bar (SHPB).Based on the relationship among the yield strength, the strain rate and the equivalent plastic strain, we determined the parameters of Johnson-Cook constitutive model of 30CrMnSiNi2A steel with different hardnesses.Furthermore, we obtained the parameters of Johnson-Cook failure model for 30CrMnSiNi2A steel by the relationship among the failure strain, the stress triaxiality and the strain rate, and summarized the remarkable influence of the hardness on the parameters of Johnson-Cook constitutive model and failure model of 30CrMnSiNi2A steel.The results show that, as the hardness of 30CrMnSiNi2A steel increases, its plasticity and strain rate sensitivity decreases, but its brittleness increases.

     

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