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

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

M.J. Azizpour, H. Fattahi

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: https://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.

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