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The Multi-Breakage Phenomenon in Air Bending Process

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Abstract:

In this work, the multi-breakage effect has been studied by means of an experimental campaign and finite element analysis. We suggest that large radius bending (XL-bending) consists of three phases that are distinguishable according to the type of contact of the plate with the tool: 1-point, surface and 2-points. In the experimental investigation the high-strength steel Weldox 1300 and a 40 mm radius punch were used. The authors created a camera setup to film the multi-breakage effect. Additionally, finite-element calculations were performed to confirm the hypothesis of the three phases of the bending process. For the springback and the bending force evaluation, the difference in the moment distribution for each phase has been calculated in the case of a beam. It shows that the multi-breakage effect must be taken into account to obtain a good accuracy for the springback and the bending force calculation.

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Info:

Periodical:

Key Engineering Materials (Volumes 611-612)

Pages:

1047-1053

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.611-612.1047

Citation:

Cite this paper

Online since:

May 2014

Authors:

Vitalii Vorkov*, Richard Aerens, Dirk Vandepitte, Joost R. Duflou

Keywords:

Air Bending, Finite Element Modeling (FEM), High Strength Steel (HSS), Multi-Breakage Phenomenon, Springback

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* - Corresponding Author

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