Key Engineering Materials, Volume (462), No (1), Year (2011-12) , Pages (284-288)

Title : ( Necking prediction in tube hydroforming by stress-based forming limit diagrams )

Authors: Abdolrahman Jaamialahmadi , Mehran Kadkhodayan ,

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Path-independent stress based forming limit diagrams for anisotropic materials along with the Hill 48 yield function; power law strain hardening and isotropic hardening are derived. Bifurcation analyses via solving equilibrium equations of a pointed vertex on subsequent yield loci are utilized. The presented practical forming limit diagrams (FLSDs) show more acceptable agreements with experimental data compared with those obtained by other methods. A typical neck detection macro in APDL is developed by FEA simulation for a free bulge tube hydroforming to confirm the significant simplicity and straightforwardness of the mentioned FLSD.

Keywords

, Neck initiation, Tube hydroforming, Bifurcation analysis, Anisotropy, Hill 48, FLSD,
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@article{paperid:1018855,
author = {Jaamialahmadi, Abdolrahman and Kadkhodayan, Mehran},
title = {Necking prediction in tube hydroforming by stress-based forming limit diagrams},
journal = {Key Engineering Materials},
year = {2011},
volume = {462},
number = {1},
month = {December},
issn = {1013-9826},
pages = {284--288},
numpages = {4},
keywords = {Neck initiation; Tube hydroforming; Bifurcation analysis; Anisotropy; Hill 48; FLSD; Swifit},
}

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%0 Journal Article
%T Necking prediction in tube hydroforming by stress-based forming limit diagrams
%A Jaamialahmadi, Abdolrahman
%A Kadkhodayan, Mehran
%J Key Engineering Materials
%@ 1013-9826
%D 2011

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