An analytical model for rapid prediction and compensation of springback for chain-die forming of an AHSS U-channel

Published on Aug 1, 2019in International Journal of Mechanical Sciences5.329
路 DOI :10.1016/J.IJMECSCI.2019.05.046
Yaguang Li5
Estimated H-index: 5
(SJTU: Shanghai Jiao Tong University),
Zhenye Liang1
Estimated H-index: 1
(SJTU: Shanghai Jiao Tong University)
+ 5 AuthorsLei Shi4
Estimated H-index: 4
Sources
Abstract
Chain-die forming is an emerging technique for manufacturing AHSS component as an alternative to roll forming. The pronounced springback of AHSS due to their high strength is a key factor in chain-die blocks design. In this paper, a modified Chaboche hardening model that assumes a Hollomon鈥揤oce combined equation and incorporates variation of elastic modulus is established to better describe hardening behaviors of AHSS. An analytical method for rapid prediction of springback of a U-channel is developed and then combined with an optimization algorithm to minimize springback. The springback compensation is validated by a chain-die forming experiment of a QP1180 U-channel by using the optimal die blocks. The proposed analytical modeling method provides a fast and effective tool for die block design of U-channel chain-die forming.
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