Scientia Iranica, ( ISI ), Volume (18), No (2), Year (2011-1) , Pages (250-260)

Title : ( Analytical Elastic-Plastic Study on Flange Wrinkling in Deep Drawing Process )

Authors: Mehran Kadkhodayan , Farzad Moayyedian ,

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Based on the two-dimensional plane stress wrinkling model of an elastic-plastic annular plate and a bifurcation functional from Hill\\\\\\\'s general theory of uniqueness in polar coordinates, the critical conditions for the elastic and plastic wrinkling of the flange of a circular blank during the deep-drawing process are obtained to improve previous results of the literature. The influence of a blank-holder on wrinkling and on the number of waves generated can also be quantitatively predicted. A closed-form solution for the critical drawing stress is developed, based on the Tresca yield criterion, along with the assumption of perfectly plastic material. A nonlinear plastic stress field and the deformation theory of plasticity are used. It is demonstrated that using the large deflection theory for a strain tensor with neglecting nonlinear terms has the same result as the small defection theory.

Keywords

Elastic wrinkling; Plastic wrinkling; Deep drawing process; Large defection; Tresca yield criterion; Bifurcation
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@article{paperid:1020725,
author = {Kadkhodayan, Mehran and Moayyedian, Farzad},
title = {Analytical Elastic-Plastic Study on Flange Wrinkling in Deep Drawing Process},
journal = {Scientia Iranica},
year = {2011},
volume = {18},
number = {2},
month = {January},
issn = {1026-3098},
pages = {250--260},
numpages = {10},
keywords = {Elastic wrinkling; Plastic wrinkling; Deep drawing process; Large defection; Tresca yield criterion; Bifurcation functional.},
}

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%0 Journal Article
%T Analytical Elastic-Plastic Study on Flange Wrinkling in Deep Drawing Process
%A Kadkhodayan, Mehran
%A Moayyedian, Farzad
%J Scientia Iranica
%@ 1026-3098
%D 2011

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