Transactions of Materials and Heat Treatment

Title：Analysis on stamping deformation behavior for U-shaped beam with longitudinal arc edge

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ClassificationCode：TG386

year,vol(issue):pagenumber：2022,47(1):49-55

Abstract：

For the stamping problem of U-shaped beam parts with longitudinal arc edges of high strength steel, the stamping deformation characteristics of each area for the U-shaped beam forming part with longitudinal arc edge were analyzed. Then, the stress and strain distributions and the thickness change laws of the forming process were analyzed by finite element, and its thinning and thickening behaviors in the forming process were explored by combining the simulation results and physical experiments. The verification results show that the main deformation area of the beam is the wing plate area, and the thickness gradually decreases from the end to the middle. The main dangerous area was at the junction of middle side wall and fillet at the top with the minimum thickness of 0.833 mm, which is the main assessment position for the quality of parts. In addition, the strain at this place changes greatly, and the maximum reduction amount of thickness is close to 0.20 mm, which is easy to cause failure of the beam. Thus, the research results have reference value for the forming process and die design for this type of beam.

Funds：

重庆市应用开发资助项目（cstc2014yykfA60002）

作者简介：刘武静（1995-），男，硕士研究生 E-mail：liu415000267@163.com 通信作者：吕琳（1968-），女，硕士，教授 E-mail：lulin@cqut.edu.cn

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