J-C model based failure criterion and verification of Q235 steel

GUO Zitao; SHU Kaiou; GAO Bin; ZHANG Wei

doi:10.11883/bzycj-2017-0163

Volume 38 Issue 6

Sep. 2018

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GUO Zitao, SHU Kaiou, GAO Bin, ZHANG Wei. J-C model based failure criterion and verification of Q235 steel[J]. Explosion And Shock Waves, 2018, 38(6): 1325-1332. doi: 10.11883/bzycj-2017-0163

Citation:

GUO Zitao, SHU Kaiou, GAO Bin, ZHANG Wei. J-C model based failure criterion and verification of Q235 steel[J]. Explosion And Shock Waves, 2018, 38(6): 1325-1332. doi: 10.11883/bzycj-2017-0163

GUO Zitao, SHU Kaiou, GAO Bin, ZHANG Wei. J-C model based failure criterion and verification of Q235 steel[J]. Explosion And Shock Waves, 2018, 38(6): 1325-1332. doi: 10.11883/bzycj-2017-0163

Citation:

GUO Zitao, SHU Kaiou, GAO Bin, ZHANG Wei. J-C model based failure criterion and verification of Q235 steel[J]. Explosion And Shock Waves, 2018, 38(6): 1325-1332. doi: 10.11883/bzycj-2017-0163

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J-C model based failure criterion and verification of Q235 steel

doi: 10.11883/bzycj-2017-0163

GUO Zitao¹,
SHU Kaiou¹,
GAO Bin¹,
ZHANG Wei^{2
,
,}

1.
School of Civil Engineering & Urban Construction, Jiujiang University, Jiujiang 332005, Jiangxi, China
2.
Hypervelocity Impact Research Center, Harbin Institute of Technology, Harbin 150080, Helongjiang, China

Received Date: 2017-05-10
Rev Recd Date: 2017-08-17
Publish Date: 2018-11-25

Abstract

Abstract

In this paper, we conducted quasi-static and dynamic tensile tests on Q235 steel at different temperatures using the Instron tensile strength tester and the split Hopkinson bar and studied the effects of temperature, strain rates and stress triaxiality on the steel's failure strains of Q235. The results show that Q235 steel's failure strains increase with a rise in temperature but decrease with a rise the strain rates while, with a rise in the stress triaxiality, they decrease at first but then increase. Based on these results and combining them with numerical simulation, we modified the item of temperature effects and proposed a revised three-section failure criterion of stress triaxiality for J-C failure model, with relevant parameters determined and verified using Taylor impacting experiments and corresponding numerical simulations. The experimental results accord well with those from simulation.
- Q235 steel,
- failure criterion,
- stress triaxiality,
- Taylor impact

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References(17)

References

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