Wrinkling during cup drawing with NUMISHEET2014 benchmark test

Dick, Robert E. and Yoon, Jeong Whan 2015, Wrinkling during cup drawing with NUMISHEET2014 benchmark test, Steel research international, vol. 86, no. 8, pp. 915-921, doi: 10.1002/srin.201500018.

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Title Wrinkling during cup drawing with NUMISHEET2014 benchmark test
Author(s) Dick, Robert E.
Yoon, Jeong WhanORCID iD for Yoon, Jeong Whan orcid.org/0000-0002-7616-5253
Journal name Steel research international
Volume number 86
Issue number 8
Start page 915
End page 921
Total pages 7
Publisher Wiley
Place of publication London, Eng.
Publication date 2015-08
ISSN 1611-3683
Keyword(s) Wrinkling
Cup drawing
Sheet metal
Summary Wrinkling occurs when a blank is subjected to compressive stresses during the forming process as in the flange of a cup during drawing. Although the failure limit due to plastic flow localization can be simply defined by the FLC at each point of a continuum, the wrinkling limit cannot be defined with simple variables such as strain, stress, and thickness. Wrinkling is strongly affected by the mechanical properties of the sheet material, the geometry of the tools and blank, and contact conditions. The analysis of wrinkling initiation and growth is, therefore, difficult to perform due to the complex synergistic effects of the controlling parameters. Because of these difficulties, the study of wrinkling has generally been conducted case by case. A unique wrinkling criterion, which could be used effectively for various sheet forming processes, has not yet been proposed. There were many investigations on the effect of process parameters (BHF and friction) and geometry on wrinkling. However, there are few reported results on the influence of the material model on wrinkling. This paper shows how strain hardening and r-values affect wrinkle formation in its magnitude, initiation, and direction through the NUMISHEET2014 benchmark test for wrinkling during cup drawing.
Language eng
DOI 10.1002/srin.201500018
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 861199 Basic Metal Products (incl. Smelting
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Wiley
Persistent URL http://hdl.handle.net/10536/DRO/DU:30077801

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