Transactions of Materials and Heat Treatment

Title：Research on numerical simulation and springback characteristic for 3D stretchbending parts

Authors： Gao Song Yu Peng Liang Jicai Hao Zhaopeng Li Qihan Sun Yingli

Unit： Changchun University of Technology Jilin University

KeyWords： threedimensional stretchbending multipoint forming springback numerical simulation flexible forming

ClassificationCode：TG386

year,vol(issue):pagenumber：2018,43(6):53-59

Abstract：

The finite element model for forming process of the rectangle crosssection profile and the springback deformation was established by the abstraction and reasonable simplification of the flexible multipoint 3D stretchbending process principle, and the effectiveness of the simulation model was verified by experiment based on the flexible multipoint forming equipment. Then, the springback features for the 3D stretchbending parts were studied with different crosssection shapes including rectangle section, T section, and L section. The result shows that the maximum absolute error of springback prediction is 0.52 mm in the horizontal direction and 0.36 mm in the vertical direction as well as the maximum relative error is 14.77%. Thus, the simulation results and springback deformation trend are in good agreement with the experiment results. Under the same material and adjustment parameters condition, the contour error decreases from rectangle profile (1.72%), T profile (0.84%) to L profile (0.62%) gradually, while the shape deformation of the crosssection without symmetrical geometry increases gradually.

Funds：

国家自然基金面上项目（51675225）；吉林省教育厅“十三五”科学技术项目（JJKH20181032KJ, JJKH20170564KJ）

高嵩（1987-），男，博士，讲师；Email：gaosong@ccut.edu.cn；通讯作者：梁继才（1962-），男，博士，教授；Email:ltazh@sohu.com

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