Consititutive Modeling for Auto-Body Steel Sheet Incorporating Strain Rate and Temperature
Uniaxile tensile tests of auto-body steel sheet were performed at strain rate of 10-4 to 101s-1 and temperature of room temperature to 180°C. Strain rate and temperature sensitivity of flow stress were analyzed. It is found that the stress-strain curve is obviously heavily weighted on the temperature and strain rate. A new constitutive model was constructed and implemented into Abaqus/Explicit commercial software using user subroutine VUMAT. Verification of constitutive model shows that it has good agreement with experimental result.
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
W. P. Wang et al., "Consititutive Modeling for Auto-Body Steel Sheet Incorporating Strain Rate and Temperature", Advanced Materials Research, Vols. 189-193, pp. 2925-2929, 2011