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International Journal of Forming Processes
1292-7775
Publication suspended
 

 ARTICLE VOL 8/1 - 2005  - pp.49-61  - doi:10.3166/ijfp.8.49-61
TITLE
A Numerical Analysis of Thickness Effects on Limit Strains in Metal Sheets

ABSTRACT
Numerical simulations of the plane-strain tension test and of the Nakazima test have been carried out with the aim of evaluating the influence of the sheet thickness upon the strain localisation process. It is shown that the limit strains obtained with the usual experimental methods are increasing functions of the thickness, as a result of the larger spread of short-range strain gradients for thicker sheets. When the same tooling geometry is employed with sheets of different thicknesses, the intrinsic thickness dependence of limit strains should thus be analysed in relation with a numerical evaluation of the strain gradients developed during the test.

AUTEUR(S)
Luciano Pessanha MOREIRA, Gérard FERRON, Marion MARTINY

KEYWORDS
sheet forming, limit strains, thickness effects, finite element modelling.

CITATIONS
ijfp.revuesonline.com/revues/5/citation/6019.html

LANGUE DE L'ARTICLE
Anglais

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