Strength enhancements in cold-formed structural sections - Part II: Predictive models

Title: Strength enhancements in cold-formed structural sections - Part II: Predictive models
Authors: Rossi, B
Afshan, S
Gardner, L
Item Type: Journal Article
Abstract: Cold-formed structural sections are manufactured at ambient temperature and hence undergo plastic deformations, which result in an increase in yield stress and a reduction in ductility. This paper begins with a comparative study of existing models to predict this strength increase. Modifications to the existing models are then made, and an improved model is presented and statistically verified. Tensile coupon data from existing testing programmes have been gathered to supplement those generated in the companion paper and used to assess the predictive models. A series of structural section types, both cold-rolled and press-braked, and a range of structural materials, including various grades of stainless steel and carbon steel, have been considered. The proposed model is shown to offer improved mean predictions of measured strength enhancements over existing approaches, is simple to use in structural calculations and is applicable to any metallic structural sections. It is envisaged that the proposed model will be incorporated in future revisions of Eurocode 3.
Issue Date: 31-Jan-2013
Date of Acceptance: 23-Dec-2012
URI: http://hdl.handle.net/10044/1/39257
DOI: http://dx.doi.org/10.1016/j.jcsr.2012.12.007
ISSN: 1873-5983
Publisher: Elsevier
Start Page: 189
End Page: 196
Journal / Book Title: Journal of Constructional Steel Research
Volume: 83
Copyright Statement: © 2013 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Technology
Construction & Building Technology
Engineering, Civil
Engineering
CONSTRUCTION & BUILDING TECHNOLOGY
ENGINEERING, CIVIL
Cold-forming
Predictive models
Stainless steel
Strain hardening
Strength enhancement
STAINLESS-STEEL ALLOYS
HOLLOW SECTIONS
CROSS-SECTIONS
MEMBERS
Civil Engineering
0905 Civil Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering



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