Author:
Fu Xiujuan,Yu Ge,Zhao Yan,Lu Jiang,Yu Yuehong
Abstract
Abstract
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.
Reference7 articles.
1. Properties of Large-Scale Structure Workpieces in High-Pressure Sheet Metal Forming of Tailor Rolled Blanks [J];Krux;steel research international,2005
2. Study on Unidirectional Drawing Performance of TRB [J];Zhang;Journal of Dalian University of Technology,2012
3. TRB rolling technology and its application [J];Chen;Rolling steel,2013
4. Continuous variable section plate and its key problems in application [J];Jiang;Manufacturing technology and machine tools,2011