Transactions of Materials and Heat Treatment

Title：Study on springback behavior for tube-fin radiator hydroforming

Authors： Chen Kai1 He Yulin1 Ma Jianping1 2 Han Haimei1 Yang Lianfa1

Unit： 1.Faculty of Mechanical & Electrical Engineering Guilin University of Electronic Technology 2.Guangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology Guilin University of Electronic Technology

KeyWords： tube-fin radiator hydroforming springback residual contact pressure hydroforming pressure

ClassificationCode：TG394

year,vol(issue):pagenumber：2023,48(5):147-154

Abstract：

The springback has an important influence on the forming quality of tube-fin radiator hydroforming. Therefore, the springback behavior of tube-fin radiator during the unloading stage of hydroforming when the radiator tube has plastic deformation and the fin has elastic deformation was analyzed by using the material power strengthening theory model, and the finite element model of the tube-fin radiator hydroforming was established by finite element software ABAQUS. Furthermore, the determination method of selecting the hydroforming pressure range and the method of obtaining the unconstrained springback difference between radiator tube and fin were proposed, and the influence laws of the hydroforming pressure on the overall springback amount and the springback difference of tube-fin radiator after unloading were analyzed. Finally, the influence law of the overall springback on the residual contact pressure was preliminarily explored. The results show that the springback model based on the material power strengthening constitutive relation can directly reflect the effect of springback on the residual contact pressure. The determination method for selecting the hydroforming pressure range is accurate and consistent with the theoretical results. Thus, during hydroforming, the hydroforming pressure should be increased within the hydroforming pressure range to increase the springback amount, and the residual contact pressure is increased to improve the forming quality.

Funds：

国家自然科学基金资助项目（52065014）；广西自然科学基金资助项目（2017GXNSFAA198133）；广西制造系统与先进制造技术重点实验室主任基金项目（22-35-4-S013）；广西高校中青年教师科研基础能力提升项目（2023KY0220）

作者简介：陈凯（1997-），男，硕士研究生,E-mail：chenkai1997430725@163.com;通信作者：何玉林（1980-），女，硕士，高级实验师,E-mail：hyl_2005@126.com

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