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- Title
Analytical springback assessment and compensation in 3D multi-point flexible stretch bending forming.
- Authors
Liang, Ce; Luo, Yadan; Liang, Jicai; Li, Yi
- Abstract
Due to the discrete die of multi-point stretch bending, there are contact zone and non-contact zone on the profile, which makes the springback phenomenon more complicated. In this paper, considering that the neutral layer will shift due to the application of pre-stretching and post-stretching, an analytical model of the relationship between springback error and stress is established. Under the different bending radius, the maximum springback error obtained by theoretical calculation is 6.9%, while the average springback error of the traditional springback model is 10.5%, which means that the springback prediction model proposed in this paper is more reliable. Multi-point stretch bending has been unanimously recognized by everyone because of its adjustable die surface. In this paper, the secant method is used to calculate the springback compensation factor, so that the springback error of the profile is within the allowable error range of the production under the limited numbers of springback compensation.
- Publication
International Journal of Advanced Manufacturing Technology, 2023, Vol 129, Issue 1/2, p197
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-023-12047-z