Mechanical Analysis of TRB Transition Region

5th Annual International Workshop on Materials Science and Engineering

Fu, Xiujuan^1 ; Yu, Ge^1 ; Zhao, Yan^1 ; Lu, Jiang^1 ; Yu, Yuehong^1

School of Material Science and Engineering, Wuhan Institute of Technology, Wuhan

430073, China^1

关键词: Experimental comparison;    Interpolation method;    Invariance theory;    Mechanical analysis;    Tailor rolled blank;    Transition regions;    True stress-strain;    Uniaxial tensile test;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/585/1/012004/pdf
DOI  :  10.1088/1757-899X/585/1/012004

来源: IOP

【 摘 要 】

In this paper, the mechanical properties of Tailor Rolled Blank (TRB) transition region was investigated By establishing a true stress-strain constitutive model of the TRB transition region. Firstly, the stress-strain curve obtained by uniaxial tensile test of 1mm, 2mm thick plates is subjected to regression analysis. Based on Ludwig equation, the true stress-strain constitutive equations of 1mm and 2mm thick plates were obtained. Then, The true stress-strain constitutive equation of TRB transition region was established by interpolation method combined with 1mm, 2mm thick plate constitutive equation, volume invariance theory and Von-Mises equivalent strain.Finally, the accuracy of the model is verified by simulation and experimental comparison. The results show: A new constitutive model of TRB was established, which is well responsed to the mechanical properties of the transition region.