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Numerical analysis of flanging using tailored rubber pad forming on AA7075-O sheets
BORREGO-PUCHE Marcos, PALOMO-VÁZQUEZ David, MORALES-PALMA Domingo, MARTÍNEZ-DONAIRE Andres Jesus, ROSA-SAINZ Ana, CENTENO Gabriel, VALLELLANO Carpoforo
download PDFAbstract. The flanging of metal sheets is extensively used in the automotive and aeronautical industries to provide rigidity or support for subsequent assembly. Flanging by rubber pad forming is one of the most common processes for small and medium batch production. Flanges with non-linear bending lines are exposed to severe conditions that significantly hinder our comprehension of the geometrical, material, and process factors associated with flange formability (i.e., flangeability). This work presents a numerical study of the flanging process by a tailored rubber pad of hollow AA7075-O parts with continuous concave and convex flanges. The flangeability limits, the geometric capabilities of the forming process, and the deformation mechanisms of stretched and shrunk flanges as well as in the transition zone between them are analysed.
Keywords
Sheet Metal Forming, Rubber Pad Forming, Flanging, Flangeability
Published online 4/24/2024, 8 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: BORREGO-PUCHE Marcos, PALOMO-VÁZQUEZ David, MORALES-PALMA Domingo, MARTÍNEZ-DONAIRE Andres Jesus, ROSA-SAINZ Ana, CENTENO Gabriel, VALLELLANO Carpoforo, Numerical analysis of flanging using tailored rubber pad forming on AA7075-O sheets, Materials Research Proceedings, Vol. 41, pp 1551-1558, 2024
DOI: https://doi.org/10.21741/9781644903131-172
The article was published as article 172 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] N. Asnafi, On stretch and shrink flanging of sheet aluminium by fluid forming, J. Mat. Proc. Tech. 96 (1999) 198–214. https://doi.org/10.1016/S0924-0136(99)00352-0
[2] H. Livatyali, A. Müderrisoğlu, M.A. Ahmetoğlu, N. Akgerman, G.L. Kinzel, T. Altan, Improvement of hem quality by optimizing flanging and pre-hemming operations using computer aided die design, J. Mater. Proc. Tech. 98 (2000) 41-52. https://doi.org/10.1016/S0924-0136(99)00304-0
[3] L. Chen, H. Chen, Q. Wang, Z. Li, Studies on wrinkling and control method in rubber forming using aluminium sheet shrink flanging process, Mater. Des. 65 (2015) 505-510. https://doi.org/10.1016/j.matdes.2014.09.057
[4] S. Kumar, M. Ahmed, S.K. Panthi, Effect of punch profile on deformation behaviour of AA5052 sheet in stretch flanging process, Archiv. Civ. Mech. Eng 20 (2020) 18. https://doi.org/10.1007/s43452-020-00016-2
[5] H. Zhang, Z. Zhang, H. Ren, J. Cao, J. Chen, Deformation mechanics and failure mode in stretch and shrink flanging by double-sided incremental forming, Int. J. Mech. Sci. 144 (2018) 216-222. https://doi.org/10.1016/j.ijmecsci.2018.06.002
[6] M. Borrego, D. Morales-Palma, A.J. Martínez-Donaire, G. Centeno, C. Vallellano, Analysis of formability in conventional hole flanging of AA7075-O sheets: punch edge radius effect and limitations of the FLC, Int. J. Mater. Form. 13 (2020) 303-316. https://doi.org/10.1007/s12289-019-01487-2
[7] M. Borrego, D. Morales-Palma, C. Vallellano, Analysis of Flangeability by Single-Stage SPIF and Press-Working in AA7075-O Sheet, J. Manuf. Sci. Eng. 143(1) (2020) 011005. https://doi.org/10.1115/1.4047997
[8] L. Belhassen, S. Koubaa, M. Wali, F. Dammak, Numerical prediction of springback and ductile damage in rubber-pad forming process of aluminum sheet metal, Int. J. Mech. Sci. 117 (2016) 218-226. https://doi.org/10.1016/j.ijmecsci.2016.08.015
