Study on Nonuniform Deformation of Tailor Rolled Blank During Uniaxial Tension

作     者：Hua-Wei Zhang Xiang-Hua Liu Li-Zhong Liu Ping Hu Jia-Lu Wu 

作者机构：School of Mechanical Engineering and AutomationNortheastern University Research Institute of Science and Technology Northeastern University School of Automotive Engineering Dalian University of Technology 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2015年第28卷第9期

页      面：1198-1204页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 51105068 and 51475086) the Fundamental Research Funds for the Central Universities (Nos. N130323003 and XNB201413) the Science and Technology Research Project for Higher School of Hebei Province (No. Z2013068) 

主　　题：Tailor rolled blank (TRB) Nonuniform deformation Uniaxial tension Annealing Metallographical 

摘      要：The deformation characteristics of tailor rolled blank （TRB） in the course of uniaxial tension were studied by means of analysis, test and simulation. The mechanical analytical model of TRB during uniaxial tension was set up, and the deformation formulae for the thinner side and for the thicker side were derived to quantify the deformation of TRB. On this basis, uniaxial tension tests on TRB and ordinary blanks （the thinner side and the thicker side of TRB） were conducted. Lagrange polynomial interpolation method was adopted to construct the stress-strain fields of unannealed and annealed TRBs for solving TRB material parameters, and then, uniaxial tension simulation on TRB was completed. Deformations and properties of unannealed TRB were compared with those of annealed TRB, and the thinner side and the thicker side were also compared. Finally, the research results were explained by metallurgical structure. The results show that nonuniform deformation happens in TRB during uniaxial tension, and the necking occurs on the thinner side. The agreement of analysis, test and simulation confirms the correctness of the analytical model and the deformation formulae. The findings of this paper can lay the foundation for the future study on TRB stamping formability and provide a way for TRB modeling.