An inverse routine to predict residual stress in sheet material

Abvabi, A., Rolfe, B., Hodgson, P.D. and Weiss, M. 2016, An inverse routine to predict residual stress in sheet material, Materials science and engineering A, vol. 652, pp. 99-104, doi: 10.1016/j.msea.2015.11.077.

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Title An inverse routine to predict residual stress in sheet material
Author(s) Abvabi, A.
Rolfe, B.ORCID iD for Rolfe, B.
Hodgson, P.D.
Weiss, M.ORCID iD for Weiss, M.
Journal name Materials science and engineering A
Volume number 652
Start page 99
End page 104
Total pages 6
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-01-15
ISSN 0921-5093
Keyword(s) residual stress
304L stainless steel
bending test
inverse routine
x-ray diffraction (XRD)
Summary A method is presented to determine residual stress distribution in sheet material from data collected in a free bending test. It may be used where the residual stress distribution is symmetrical about the mid-surface as it is usually the case for frequently-used sheet metal post-processing techniques such as skin-pass or temper rolling, tension- and roller leveling. An existing inverse technique is used to obtain a residual stress profile and material constants that provide the best fit in a finite element analysis of bending with the experimentally derived moment-curvature relation. The method is verified for bending of a low-carbon stainless steel using measurement of residual stress by X-ray diffraction. The residual stresses were induced in the sheet by cold rolling. The technique described here can be used industrially as a rapid method of investigating residual stresses in incoming sheet. In processes where the deformation is principally one of bending, such as cold roll forming, it is known that residual stresses have an influence on shape defects and springback and the method presented here can be used to determine whether incoming sheet is suitable for further processing and also as a means of obtaining improved material data input for numerical simulation.
Language eng
DOI 10.1016/j.msea.2015.11.077
Field of Research 091207 Metals and Alloy Materials
0912 Materials Engineering
0913 Mechanical Engineering
Socio Economic Objective 861205 Sheet Metal Products
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
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Document type: Journal Article
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