Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22685
Title: Residual stresses in press-braked stainless steel sections, I : coiling and uncoiling of sheets
Authors: Quach, WM
Teng, JG 
Chung, KF 
Keywords: Coiling
Finite element simulation
Material anisotropy
Plastic bending
Residual stresses
Stainless steel
Uncoiling
Issue Date: 2009
Publisher: Elsevier
Source: Journal of constructional steel research, 2009, v. 65, no. 8-9, p. 1803-1815 How to cite?
Journal: Journal of constructional steel research 
Abstract: The manufacturing process of cold-formed thin-walled steel members induces cold work which can be characterized by the co-existent residual stresses and equivalent plastic strains and has a significant effect on their structural behaviour and strength. The present paper and the companion paper are concerned with the prediction of residual stresses and co-existent equivalent plastic strains in stainless steel sections formed by the press-braking method. This manufacturing process consists of the following two distinct stages: (i) coiling and uncoiling of the sheets, and (ii) press-braking operations. This paper presents an analytical solution for the residual stresses and co-existent equivalent plastic strains that arise from the first stage. In the analytical solution, the coiling-uncoiling stage is modelled as an inelastic plane strain pure bending problem; the stainless steel sheets are assumed to obey Hill's anisotropic yield criterion with isotropic hardening to account for the effects of material anisotropy and nonlinear stress-strain behaviour. The accuracy of the solution is demonstrated by comparing its predictions with those obtained from a finite element analysis. The present analytical solution and the corresponding analytical solution for press-braking operations presented in the companion paper form an integrated analytical model for predicting residual stresses and equivalent plastic strains in press-braked stainless steel sections.
URI: http://hdl.handle.net/10397/22685
ISSN: 0143-974X
EISSN: 1873-5983
DOI: 10.1016/j.jcsr.2009.04.007
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