Evaluation of Residual Stress in the Hot Forming Process Using Hole Drilling

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Evaluation of Residual Stress in the Hot Forming Process Using Hole Drilling

M.J. Azizpour, H. Fattahi

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Abstract. In the present study, it was attempted to perform the residual stress in the aluminum sheet A.A5083 via hot metal forming process by gas according to the Finite Element Method. The existence of the residual stress in the industrial pieces results in changing the reaction of structure against the applied load. The understanding of the effect of residual stress on the structural behavior is required and the design of the sensitive pieces regardless of the residual stress can result in financial and fatality damages. The aim of the present study was to apply an efficient approach to determine the stresses caused during the forming process with the hole drilling method. Thus, the sheet of 5083 aluminum alloy was formed by that method in an imperfect conical mold and the mentioned parameters were evaluated. At first, the section was analyzed initially and after preparing the mapping, it was modeled in the analysis software and its reliability was evaluated. The finite element analysis method of the hot metal forming process by the gas dependent on the temperature was evaluated. To simulate the forming process, ABAQUS/Explicit as the finite element software was used. At the end, the results obtained by the residual stress via the finite element method were compared with the results of the experimental tests of the piece.

Keywords
Hot Forming, Residual Stress, Drilling, FEM, Aluminum Alloy

Published online 12/22/2016, 6 pages
Copyright © 2016 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: M.J. Azizpour, H. Fattahi, ‘Evaluation of Residual Stress in the Hot Forming Process Using Hole Drilling’, Materials Research Proceedings, Vol. 2, pp 121-126, 2017

DOI: http://dx.doi.org/10.21741/9781945291173-21

The article was published as article 21 of the book Residual Stresses 2016

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. 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] S.Toros,F.Ozturk and I.Kacar, “Review of Warm Forming of Aluminum–Magnesium Alloys”, Journal of Materials Processing Technology, 207 (1-3), Oct.2008, pp. 1–1. http://dx.doi.org/10.1016/j.jmatprotec.2008.03.057
[2]F.Shehata,M.J.Painter, andR.Pearce,“Warm Forming of Aluminum/Magnesium Alloy Sheet”, Journal of Mechanical Work Technology, 2 (3), Dec.1978, pp. 279-291. http://dx.doi.org/10.1016/0378-3804(78)90023-2
[3]D.Sorgente,L. Tricarico, “Pressure Profile Designing in Superplastic Forming Based on the Strain Rate and on Post-forming Properties”, Journal of Materials Engineering and Performance, Vol 23, 2014,pp. 2025–2033. http://dx.doi.org/10.1007/s11665-014-1027-3
[4]J.Roesler,H. Harders and M.Baeker, “Mechanical behavior of engineering materials”, Springer, New York,2007.
[5]D.Wilson, “Aluminum versus Steel in the Family Car-the Formability Factor”, Journal of Mechanical Work Technology, 16 (3), June.1988, pp. 257-277. http://dx.doi.org/10.1016/0378-3804(88)90055-1
[6]Tang, J.S., Fuh, Y.K., Lee, S., 2014, “Superplastic forming process applied to aero-industrial strakelet:”wrinkling, thickness, and microstructure analysis”, Journal of Advance Manufacturing Technology,
[7]H.Yu Wu, T. M.Da, “Modified male die rapid gas blow forming of fine-grained Mg alloy AZ31B thin sheet”, Journal of Advance Manufacturing Technology,2015.
[8] M.Bakhshi-Jooybari, A.Gorji, and M.Elyasi, “Developments in sheet hydroforming for complex industrial parts”,Metal Forming,Vol 3,2012, pp. 55-84. http://dx.doi.org/10.5772/48142
[9] A.H.Van Den Boogaard, J.Hu´ etink, “Modelling of aluminium sheet forming at elevated temperatures”, Materials Processing and Design: Modeling, Simulation and Applications, Proceedings of the 8th International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM,2004.
[10] P.F.Bariani, “Hot Stamping of AA5083 Aluminum Alloy Sheets”, Journal of Manufacturing Technology, 62 (1), April 2013, pp. 251-254.
[11] R.Hambli, A. Potiron, F.Guerin and B. Dumon, “Numerical Pressure Prediction Algorithm of Superplastic Forming Procedd Using 2D and 3D Modles”, Journal of Materials Processing Technology, 112, October, 2001, pp. 83–90. http://dx.doi.org/10.1016/S0924-0136(01)00549-0