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Published in: Production Engineering 2/2019

18-01-2019 | Computer Aided Engineering

Residual stresses and springback reduction in U-channel drawing of Al5182-O by using a servo press and a servo hydraulic cushion

Authors: A. Fallahiarezoodar, T. Gupta, C. Goertemiller, T. Altan

Published in: Production Engineering | Issue 2/2019

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Abstract

The increasing use of aluminum alloys in automotive industry brings new challenges regarding formability and springback. Servo presses and servo hydraulic cushions can accurately control ram motion and blank holder force during the forming process, reducing the difficulties encountered in forming Al alloys. This study presents an experimental and numerical analysis of springback and residual stresses induced during the U-channel drawing of Al 5182-O. During the U-channel drawing, the draw-in of the sheet material into the die cavity is controlled by blank holder force. So, the material is under stretch bending condition when it slides around the die corner radius. When the material passes the die corner radius it unbends. The reverse loading resulted from the unbending process provides heterogeneous stress distribution through the sheet thickness in the wall section. The effect of post stretching, applied by the use of a servo hydraulic cushion, on reduction of residual stresses and springback at the wall is investigated. The benefit of using servo hydraulic cushion for reducing springback and residual stresses has been demonstrated experimentally. Results illustrate a significant reduction of residual stresses and springback when post stretching is applied.
Literature
1.
go back to reference Komgrit L, Hamasaki H, Hino R, Yoshida F (2016) Elimination of springback of high-strength steel sheet by using additional bending with counter punch. J Mater Process Technol 229:199 CrossRef Komgrit L, Hamasaki H, Hino R, Yoshida F (2016) Elimination of springback of high-strength steel sheet by using additional bending with counter punch. J Mater Process Technol 229:199 CrossRef
2.
go back to reference Lee JW, Lee MG, Barlat F (2012) Finite element modeling using homogeneous anisotropic hardening and application to springback prediction. Int J Plast 29:13 CrossRef Lee JW, Lee MG, Barlat F (2012) Finite element modeling using homogeneous anisotropic hardening and application to springback prediction. Int J Plast 29:13 CrossRef
3.
go back to reference Yu HY (2009) Variation of elastic modulus during plastic deformation and its influence on springback. Mater Des 30 846 CrossRef Yu HY (2009) Variation of elastic modulus during plastic deformation and its influence on springback. Mater Des 30 846 CrossRef
4.
go back to reference Xue X, Liao J, Vincze G, Pereira A, Barlat F (2016) Experimental assessment of nonlinear elastic behavior of dual-phase steels and application to springback prediction. Int J Mech Sci 117:1 CrossRef Xue X, Liao J, Vincze G, Pereira A, Barlat F (2016) Experimental assessment of nonlinear elastic behavior of dual-phase steels and application to springback prediction. Int J Mech Sci 117:1 CrossRef
5.
go back to reference Gil I, Mendiguren J, Galdos L, Mugarra E, Argandona E (2016) Influence of the pressure dependent coefficient of friction on deep drawing springback predictions. Tribol Int 103 266 CrossRef Gil I, Mendiguren J, Galdos L, Mugarra E, Argandona E (2016) Influence of the pressure dependent coefficient of friction on deep drawing springback predictions. Tribol Int 103 266 CrossRef
6.
go back to reference Wang W, Zhao Y, Wang Z, Hua M, Wei X (2016) A study on variable friction model in sheet metal forming with advanced high strength steels. Tribol Int 93 17 CrossRef Wang W, Zhao Y, Wang Z, Hua M, Wei X (2016) A study on variable friction model in sheet metal forming with advanced high strength steels. Tribol Int 93 17 CrossRef
7.
go back to reference Eggertsen P-A, Mattiasson K (2012) Experiences from experimental and numerical springback studies of a semi-industrial forming tool. Int J Mater Form 5:341 CrossRef Eggertsen P-A, Mattiasson K (2012) Experiences from experimental and numerical springback studies of a semi-industrial forming tool. Int J Mater Form 5:341 CrossRef
8.
go back to reference Wagoner RH, Lim H, Lee M-G (2013) Advanced issues in springback. Int J Plast 45:3 CrossRef Wagoner RH, Lim H, Lee M-G (2013) Advanced issues in springback. Int J Plast 45:3 CrossRef
9.
go back to reference Gan W, Wagoner RH (2004) Die design method for sheet springback. Int J Mech Sci 46:1097 CrossRef Gan W, Wagoner RH (2004) Die design method for sheet springback. Int J Mech Sci 46:1097 CrossRef
10.
go back to reference Ayres RA (1984) SHAPESET: a process to reduce sidewall curl springback in high strength steel rails. J Appl Metalwork 3(2):127 CrossRef Ayres RA (1984) SHAPESET: a process to reduce sidewall curl springback in high strength steel rails. J Appl Metalwork 3(2):127 CrossRef
11.
go back to reference Liu G, Lin Z, Bao Y, Cao J (2002) Eliminating springback error in U-Shaped part forming by variable blankholder force. J Mater Eng Perform 11(1):64 CrossRef Liu G, Lin Z, Bao Y, Cao J (2002) Eliminating springback error in U-Shaped part forming by variable blankholder force. J Mater Eng Perform 11(1):64 CrossRef
12.
go back to reference McLaughlin E, Gupta T, Fallahiarezoodar A, Altan T (2018) Reducing springback in hat-shape bending with variable BHF using a servo-hydraulic cushion. Stamp J March/April, pp 16–17 McLaughlin E, Gupta T, Fallahiarezoodar A, Altan T (2018) Reducing springback in hat-shape bending with variable BHF using a servo-hydraulic cushion. Stamp J March/April, pp 16–17
13.
go back to reference Sun L, Wagoner RH (2011) Complex unloading behavior: nature of the deformation and its consistent constitutive representation Int J Plast 27 1126–1144 CrossRefMATH Sun L, Wagoner RH (2011) Complex unloading behavior: nature of the deformation and its consistent constitutive representation Int J Plast 27 1126–1144 CrossRefMATH
Metadata
Title
Residual stresses and springback reduction in U-channel drawing of Al5182-O by using a servo press and a servo hydraulic cushion
Authors
A. Fallahiarezoodar
T. Gupta
C. Goertemiller
T. Altan
Publication date
18-01-2019
Publisher
Springer Berlin Heidelberg
Published in
Production Engineering / Issue 2/2019
Print ISSN: 0944-6524
Electronic ISSN: 1863-7353
DOI
https://doi.org/10.1007/s11740-019-00878-3

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