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Improvement of accuracy in a free bending test for material characterization

Mendiguren, Joseba, Abvabi, Armin, Rolfe, Bernard and Weiss, Matthias 2015, Improvement of accuracy in a free bending test for material characterization, International journal of mechanical sciences, vol. 103, pp. 288-296, doi: 10.1016/j.ijmecsci.2015.09.013.

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Title Improvement of accuracy in a free bending test for material characterization
Author(s) Mendiguren, Joseba
Abvabi, Armin
Rolfe, BernardORCID iD for Rolfe, Bernard orcid.org/0000-0001-8516-6170
Weiss, MatthiasORCID iD for Weiss, Matthias orcid.org/0000-0002-1845-6343
Journal name International journal of mechanical sciences
Volume number 103
Start page 288
End page 296
Total pages 9
Publisher Pergamon Press
Place of publication Oxford, Eng.
Publication date 2015-11
ISSN 0020-7403
1879-2162
Keyword(s) bending test
roll forming
finite element analysis
high strength steel
Summary The effect of secondary (anticlastic) curvature and the stress state on the measurement of material properties in a free bending test is studied in order to improve the accuracy of the test. Experiments and numerical analysis are conducted on a medium strength 304L stainless steel and high strength dual-phase steels, DP780 and DP1000. The dependence of the secondary curvature on sample geometry is analysed and correction factors are introduced to improve the accuracy of the calculation of material properties when using plane strain or uniaxial stress two-dimensional assumptions. A free bending test procedure is proposed to characterize material behaviour close to yield. This will allow the quick and simple analysis of material properties for bending-dominated forming processes such as roll forming.
Language eng
DOI 10.1016/j.ijmecsci.2015.09.013
Field of Research 091307 Numerical Modelling and Mechanical Characterisation
0910 Manufacturing Engineering
0905 Civil 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
Persistent URL http://hdl.handle.net/10536/DRO/DU:30080944

Document type: Journal Article
Collections: School of Engineering
Institute for Frontier Materials
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