Characterizing steel tube for hydroforming applications

Lévy, Bernard; Tyne, C. J. Van; Stringfield, J. M.

doi:10.1016/j.jmatprotec.2004.03.008

Cited by 14 publications

(1 citation statement)

References 9 publications

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“…The corner fill benchmark is a tube hydroforming process widely used by researchers in the automotive industry, material suppliers and government supported research projects [3,4]. It was originally designed to evaluate lubricants and steel grades.…”

Section: Introductionmentioning

confidence: 99%

Shear Deformation And Thickness Stress In Corner Fill

Chen¹

2005

AIP Conference Proceedings

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Corner fill is a simple benchmark intended to gain knowledge of tube hydroforming and to evaluate hydroforming parameters. In corner fill, an originally round tube is put into a cylindrical die with square cross-sections. Under applied internal pressure, the tube expands in and fills the corners of the die. Corner fill has been studied by using finite element method. The analyses, however, failed to correctly predict the burst of the tube. In this paper, a two-dimensional implicit-static plane strain finite element model is used to study the important mechanical parameters of deformation, including shear deformation and thickness stress, of the tube. The purpose of this paper is to try to explain why the existing failure criteria, including the forming limit diagram and plastic strain criterion, cannot correctly predict burst failures in corner fill. In particular, quantitative values were obtained for shear deformation and thickness stress in a corner filled tube.

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Section: Introductionmentioning

confidence: 99%