Transactions of Materials and Heat Treatment

Title：Theoretical analysis and numerical simulation on springback prediction for 3D stretch bending of aluminum profile

Authors： Gao Song Wu Yuhang Li Qihan Sang Ye He Tonggui Sun Yingli Wang Haoran

Unit： Changchun University of Technology

KeyWords： aluminum alloy profile 3D stretch bending multi-point forming springback theoretical model

ClassificationCode：TG386

year,vol(issue):pagenumber：2021,46(4):143-149

Abstract：

By reasonably abstracting and simplifying of the process principle for flexible multi-point 3D stretch bending, the 3D stretch bending process of rectangular-section was equivalent to the 2D bending process of diamond-section, and the theoretical analysis model for springback of diamond-section profile was established. Then, the numerical simulation models of stretch bending process and springback deformation for rectangular-section profile were established, and based on the developed flexible multi-point forming device, the springback results of numerical simulation, theoretical analytical model and experiments were compared to verify the effectiveness of theoretical model. The results show that the error between theoretical model and experiment is larger than that between numerical simulation and experiment with the maximum error of 1.3124 mm, which occurs at the farthest distance from the center of profile and is less than the minimum error of 2 mm for the target forming part. Compared with the numerical simulation model, the calculation of theoretical model is simpler and the time-consuming is shorter, which provides a theoretical reference for the future research of springback prediction in 3D stretch bending.

Funds：

国家自然科学基金资助项目（51805045）；吉林省科技发展计划项目（20200401115GX）

高嵩（1987-），男，博士，讲师 E-mail：gaosong@ccut.edu.cn

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