Experimental Validation and Constitutive Relationship of Steel Material under Elevated Temperature and High Strain Rate
- DOI
- 10.2991/ifeesd-16.2016.47How to use a DOI?
- Keywords
- Q345 steel material; SHPB experiment; Johnson-Cook model; Constitutive model; Elevated temperatures; High strain rate.
- Abstract
Based on the temperature rise caused by adiabatic process and the viscosity of the metal under the impact of steel, the Johnson-Cook constitutive relation of structural steel in civil engineering was modified. Applying the Split-Hopkinson Pressure Bar (SHPB) testing technique, the impact experiment under elevated temperatures (25, 350, 450 and 750 ) and high stain rates (2300 and 3200s-1) of Q345 steel was performed. Johnson-Cook constitutive model of structural steel was modified on the basis of adiabatic warming effect and Perzyna constitutive model. Based on the result of the experiment, the fitting curves were drawn and compared with the revised constitutive model. The results showed that Q345 steel has obvious strain rate hardening effect and temperature soften effect, and the curves of the modified constitutive model and the experimental results matched very well. The modified Johnson-Cook constitutive relationship can precisely describe the dynamic characteristic of Q345 steel under the impact of temperature effect and strain rate effect.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Shi Yan AU - Hang Wu AU - Baoxin Qi PY - 2016/05 DA - 2016/05 TI - Experimental Validation and Constitutive Relationship of Steel Material under Elevated Temperature and High Strain Rate BT - Proceedings of the 2016 International Forum on Energy, Environment and Sustainable Development PB - Atlantis Press SP - 269 EP - 273 SN - 2352-5401 UR - https://doi.org/10.2991/ifeesd-16.2016.47 DO - 10.2991/ifeesd-16.2016.47 ID - Yan2016/05 ER -