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Strength enhancements in cold-formed structural sections - Part I: Material testing

Title: Strength enhancements in cold-formed structural sections - Part I: Material testing
Authors: Afshan, S
Rossi, B
Gardner, L
Item Type: Journal Article
Abstract: This paper describes a material test programme carried out as part of an extensive study into the prediction of strength enhancements in cold-formed structural sections. The experiments cover a wide range of cross-section geometries – twelve Square Hollow Sections (SHS), five Rectangular Hollow Sections (RHS) and one Circular Hollow Section (CHS), and materials – austenitic (EN 1.4301, 1.4571 and 1.4404), ferritic (EN 1.4509 and 1.4003), duplex (EN 1.4462) and lean duplex (EN 1.4162) stainless steel and grade S355J2H carbon steel. The experimental techniques implemented, the generated data and the analysis methods employed are fully described. The results from the current test programme were combined with existing measured stress–strain data on cold-formed sections from the literature and following a consistent analysis of the combined data set, revised values for Young's modulus E and the Ramberg–Osgood material model parameters n, n′0.2,u and n′0.2,1.0 are recommended. A comparison between the recommended values and the codified values provided in AS/NZS 4673 (2001) [1], SEI/ASCE-8 (2002) [2] and EN 1993-1-4 (2006) [3] is also presented. The test results are also used in a companion paper Rossi et al. (submitted for publication) [4] for developing suitable predictive models to determine the strength enhancements in cold-formed structural sections that arise during the manufacturing processes.
Issue Date: 31-Jan-2013
Date of Acceptance: 23-Dec-2012
URI: http://hdl.handle.net/10044/1/39258
DOI: http://dx.doi.org/10.1016/j.jcsr.2012.12.008
ISSN: 1873-5983
Publisher: Elsevier
Start Page: 177
End Page: 188
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-formed
Material properties
Section forming
Strain hardening
Testing
STAINLESS-STEEL SECTIONS
HOLLOW SECTIONS
CROSS-SECTIONS
Civil Engineering
0905 Civil Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering



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