Practical strain-hardening material properties for use in deformation-based structural steel design

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Title: Practical strain-hardening material properties for use in deformation-based structural steel design
Authors: Foster, ASJ
Gardner, L
Wang, Y
Item Type: Journal Article
Abstract: Through the development of an innovative full cross-section tensile testing method, a programme of experiments was conducted to investigate the influence of average cross-section properties on the constitutive relationships for carbon steel, to validate the use of an elastic linear hardening model in practical design, and to assess the resulting accuracy enhancements to the new deformation-based continuous strength method (CSM) of structural steel design. A total of seventeen full cross-section tensile tests on hot-rolled I-sections, hollow sections and cold-formed hollow sections were performed and these were compared with coupon test data obtained from a supplementary programme of 14 tensile coupon tests and data carefully obtained from the literature. The overall behavioural response of the cross-section tensile tests demonstrated that assuming an elastic, linear hardening material model for the CSM is a reasonable assumption and the previous assumption concerning the magnitude of the strain-hardening modulus, based upon the recommendations of EN 1993-1-5, is overly conservative. A revised suite of material models was presented and was shown to furnish the CSM capacity equations with a higher degree of accuracy when compared against experimental data.
Issue Date: 1-Jul-2015
Date of Acceptance: 3-Feb-2015
URI: http://hdl.handle.net/10044/1/62130
DOI: https://dx.doi.org/10.1016/j.tws.2015.02.002
ISSN: 0263-8231
Publisher: Elsevier
Start Page: 115
End Page: 129
Journal / Book Title: Thin-Walled Structures
Volume: 92
Copyright Statement: © 2018 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Technology
Engineering, Civil
Engineering
Full cross-section tensile tests
Residual stress
Strain-hardening
Material modelling
Section properties
Plastic design
CONTINUOUS STRENGTH METHOD
HOLLOW SECTIONS
SHORT COLUMNS
BEHAVIOR
TESTS
SLENDERNESS
RELAXATION
CAPACITY
BEAMS
0901 Aerospace Engineering
0905 Civil Engineering
0913 Mechanical Engineering
Civil Engineering
Publication Status: Published
Online Publication Date: 2015-03-19
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering



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