Abstract
Springback is a serious problem in traditional multi-point forming (MPF) process, which affects its application in production. A new MPF process was invented to solve the springback problem in traditional MPF. This new process is called the multi-point forming with individually controlled force–displacement (MPF-ICFD). During the whole forming process, the normal constraining force was applied on the sheet through the lower die supported by hydraulic cylinders. Consequently, a new force state of the sheet can be obtained and the springback can be effectively inhibited. An experiment was carried out on forming of cylinder shell by using a specialized experiment device, and the influence of sheet thickness and forming force on the springback behavior has been investigated. It is shown by that: the springback amount decreases and then increases with the thickness of the sheet metal increasing. The springback amount decreases with the increase of forming force, but the trend tends to be flat.
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This work was supported by the Shandong Provincial Natural Science Foundation (No. ZR2020ME145) and the 333 High-level Talent Training Project of Jiangsu Province (third level, 2022).
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Jia, BB., Shen, Y. & Gu, Y. Springback behavior of cylindrical shells during multi-point forming with individually controlled force–displacement. J Braz. Soc. Mech. Sci. Eng. 45, 390 (2023). https://doi.org/10.1007/s40430-023-04335-2
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DOI: https://doi.org/10.1007/s40430-023-04335-2