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FEA comparison of high and low pressure tube hydroforming of TRIP steel

journal contribution
posted on 2009-11-01, 00:00 authored by Chetan Nikhare, Matthias WeissMatthias Weiss, Peter HodgsonPeter Hodgson
The increasing application of hydroforming for the production of automotive lightweight components is mainly due to the attainable advantages regarding part properties and improving technology of the forming equipment. However, the high pressure requirements during hydroforming decreases the costs benefit and make the part expensive. Another requirement of automotive industries is weight reduction and better crash performance. Thereby steel industries developed advanced high strength steels which have high strength, good formability and better crash performance. Even though the thickness of the sheet to form the component is reduced, the pressure requirement to form the part during expansion is still high during high pressure hydroforming. This paper details the comparison between high and low pressure tube hydroforming for the square cross-section geometry. It is determined that the internal pressure and die closing force required for low pressure tube hydroforming process is much less than that of high pressure tube hydroforming process. The stress and thickness distribution of the part during tube crushing were critically analysed. Further, the stress distribution and forming mode were studied in this paper. Also friction effect on both processes was discussed.

History

Journal

Computational materials science

Volume

47

Issue

1

Pagination

146 - 152

Publisher

Elsevier BV

Location

Amsterdam, Netherlands

ISSN

0927-0256

Language

eng

Publication classification

C1 Refereed article in a scholarly journal; C Journal article

Copyright notice

2009, Elsevier