Local-overall interactive buckling of welded stainless steel box section compression members
File(s)
Accepted version
Author(s)
Yuan, HX
Wang, YQ
Gardner, L
Shi, YJ
Type
Journal Article
Abstract
The interaction between local and overall buckling of welded stainless steel columns has been investigated experimentally and numerically in this study. Eight stainless steel box section compression members were fabricated from slender hot-rolled plates. The material properties and welding residual stress patterns in the test specimens had been obtained previously. Initial geometric imperfections, both local and global, were accurately measured prior to the tests. The test specimens were axially loaded between two pin-ended supports, and both local plate buckling and overall flexural buckling featured visibly in the observed failure modes. Finite element (FE) models were also set up using the ABAQUS software package to conduct numerical simulations, which were initially validated by means of comparison with the experimental data. Using the validated FE models, parametric studies were carried out to assess the influence of the key input parameters, such as the residual stresses, the material strain hardening exponent and non-dimensional proof stress, geometric imperfections and slenderness ratios. Existing design methods, including the design provisions of Eurocode 3 Part 1.4, the design proposal of Rasmussen and Rondal, the direct strength method (DSM) for cold-formed carbon steel and two revisions thereof, were all evaluated against the obtained test and numerical results. It was revealed that the EN 1993-1-4 buckling curves, which do not differ with grade, provide reasonable average strength predictions, but tend to slightly overpredict the local–overall buckling resistances of welded austenitic stainless steel members and slightly underestimate those of duplex stainless steel members. Furthermore, the three considered DSM design curves, all of which were developed on the basis of structural performance data from cold-formed sections, provide generally unconservative strength predictions for welded stainless steel sections. Based on the generated data points, modifications to the current EN 1993-1-4 provisions and the DSM have been proposed, which offer more accurate strength predictions for local–overall interactive buckling resistances of welded stainless steel box section columns.
Date Issued
2014-03-21
Date Acceptance
2014-02-20
Citation
Engineering Structures, 2014, 67, pp.62-76
ISSN
1873-7323
Publisher
Elsevier
Start Page
62
End Page
76
Journal / Book Title
Engineering Structures
Volume
67
Copyright Statement
© 2014 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000335539500007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Technology
Engineering, Civil
Engineering
ENGINEERING, CIVIL
Box sections
Design
Experiments
Interaction
Local buckling
Numerical modelling
Overall buckling
Stainless steel
Structures
Welded columns
DIRECT STRENGTH METHOD
HOLLOW SECTIONS
TUBULAR MEMBERS
PLATE GIRDERS
COLUMNS
BEHAVIOR
DESIGN
TESTS
SHEAR
Civil Engineering
0905 Civil Engineering
Publication Status
Published