Numerical Simulation of High-Strength Steel Box-Shaped Columns Failing in Local and Overall Buckling Modes
Publication: Journal of Structural Engineering
Volume 132, Issue 4
Abstract
An experimental research project was conducted to evaluate the compression stability of high strength steel sections. Two buckling modes “local and overall buckling” and the interaction between them were investigated. To further study the structural behavior of the columns thoroughly, finite element analyses were performed using ABAQUS. This paper presents a finite element analysis on the postbuckling behavior of thin-walled compression members of high strength steel with box-shaped columns fabricated from cold-reduced high strength steel plates with nominal yield stress of 550 MPa in 0.42 and 0.60 mm thicknesses. The effect of the input parameters such as the degree of prescribed initial imperfection and the size of the element mesh on the convergence of the solution has been investigated and is discussed. The paper also shows the comparison of loads obtained numerically and experimentally with those predicted on the basis of AS/NZS4600 and the North American Specification. The accurate results of the numerical simulations show that the finite element analysis can be used to predict the ultimate loads of thin-walled members including the postbuckling behavior of thin-walled sections. It is demonstrated that the finite element analysis can therefore be used to design and optimize thin-walled sections of high strength steel.
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Acknowledgments
This paper forms a part of an ARC Research project entitled “Compression Stability of High Strength Steel Sections with Low Strain-Hardening” being carried out in the Department of Civil Engineering at the University of Sydney. The writers would like to thank the Australian Research Council and BHP Coated Steel Australia for their financial support for these projects performed at the University of Sydney. The first writer was supported by a joint Department of Civil Engineering and Centre for Advanced Structural Engineering Scholarship.
References
American Iron and Steel Institute (AISI). (2001). North American specification for the design of cold-formed steel structural members, Washington, D.C.
Hibbitt, Karlsson, & Sorensen, Inc. (HKS) (1997). ABAQUS/standard user’s manual, Version 5.7.
Standards Australia (1993). “Steel sheet and strip-Hot-dipped zinc-coated or aluminium/zinc coated.” AS 1397, Sydney, NSW, Australia.
Standards Australia/Standards New Zealand (1996). “Cold-formed steel structures.” AS/NZS 4600, Sydney, NSW, Australia.
Walker, A. C. (1975). Design and analysis of cold-formed sections, International Textbook Company Limited.
Yang, D. and Hancock, G. J. (2004a). “Compression tests of cold-reduced high strength steel sections, I: stub columns, J. Struct. Eng., 130(11), 1772–1781.
Yang, D. and Hancock, G. J. (2004b). “Numerical simulations of high strength steel box-shaped columns, Research Rep. No. R842, Dept. of Civil Engineering, Univ. of Sydney, Sydney, Australia.
Yang, D., Hancock, G. J., and Rasmussen, K. J. R. (2004). “Compression tests of cold-reduced high strength steel sections, II: Long columns, J. Struct. Eng., 130(11), 1782–1789.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 132 • Issue 4 • April 2006
Pages: 541 - 549
Copyright
© ASCE.
History
Received: Jan 7, 2005
Accepted: Sep 17, 2005
Published online: Apr 1, 2006
Published in print: Apr 2006
Notes
Note. Associate Editor: Ben Schafer
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