Transactions of Materials and Heat Treatment

Title：Springback prediction of sheet metal free bending based on

Authors： Han Jiang Dou Longlong Xia Lian Zhang Kuibang

Unit： Hefei University of Technology

KeyWords： V-shaped free bending prediction of springback radial basis function orthogonal experiment ABAQUS

ClassificationCode：TG386

year,vol(issue):pagenumber：2019,44(6):30-34

Abstract：

In order to realize the effective control of the V-shaped free bending of sheet metal, firstly, the press amount model of
upper die before the V-shaped free bending unloading was established, and the processes of forming and springback of the V-shaped free bending for sheet metal were simulated by the finite element analysis software ABAQUS combining explicit and implicit methods. Then, the springback of sheet metal was taken as the test index, and the thickness of sheet metal, the elastic modulus of sheet metal, the radius of upper die roundness and the width of lower die opening were taken as the influence factors. Furthermore, the orthogonal experiment was designed by taking five levels of each influence factor. Based on the orthogonal experimental scheme and results, the approximate model of radial basis function for springback of free bending sheet metal was established and verified by actual bending experiment with error of springback prediction angle of ±0.8°. Thus, the feasibility of the method was verified, which provided support for the further application of CNC system of self-developed bending machine.

Funds：

安徽省科技攻关重大项目（17030901039）

韩江（1963-），男，博士，教授，博士生导师 E-mail：hanjiang626@126.com

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