Local-Plate and Distortional Postbuckling Behavior of Cold-Formed Steel Lipped Channel Columns with Intermediate Stiffeners
Publication: Journal of Structural Engineering
Volume 132, Issue 4
Abstract
This paper reports a detailed investigation concerning the local-plate and distortional elastic postbuckling behaviors of cold-formed steel lipped channel columns with web and flange intermediate stiffeners (the corresponding unstiffened lipped channel column postbuckling behaviors are often used as reference). This investigation relies on results obtained through geometrically nonlinear analyses based on a recently developed and numerically implemented generalized beam theory (GBT) formulation that incorporates (1) conventional (no shear deformation), (2) shear (nonlinear warping), and (3) transverse extension deformation modes. The numerical results shown provide the evolution, along a given local-plate or distortional postbuckling equilibrium path, of the column (1) deformed configuration and (2) relevant displacement profiles and/or stress distributions—mostly for validation purposes, some of them are compared with values yielded by shell finite element analyses performed by means of the code ABAQUS. In order to assess the influence of the member end support conditions, the paper also includes a comparison between the distortional postbuckling behaviors of columns with pinned / free-to-warp and fixed / warping-prevented end sections. Taking full advantage of the GBT unique modal features, all the above results are discussed in great detail and it becomes possible to unveil, explain, and/or shed some new light on several interesting and scarcely known behavioral aspects. In particular, one is able to provide illuminating and structurally (mechanically) meaningful explanations for the qualitative differences exhibited by the local-plate and distortional postbuckling behaviors of plain and stiffened (web and flanges) lipped channel columns.
Get full access to this article
View all available purchase options and get full access to this article.
References
Bernard, E. S., Bridge, R. Q., and Hancock, G. J. (1993). “Tests of profiled steel decks with V-stiffeners.” J. Struct. Eng., 119(8), 2277–2293.
Camotim, D., and Silvestre, N. (2004). “GBT distortional postbuckling analysis of cold-formed steel lipped channel columns and beams.” Program and Book of Abstracts of 17th Engineering Mechanics Conf., ASCE Reston, Va., 38–39.
Camotim, D., Silvestre, N., Gonçalves, R., and Dinis, P. B. (2004). “GBT analysis of thin-walled members: new formulations and applications.” Thin-walled structures: Recent advances and future trends in thin-walled structures technology, J. Loughlan, ed., Canopus, Bath, U.K., 137–168.
Desmond, T. P. (1977). “The behaviour and strength of thin-walled compression members with longitudinal stiffeners,” Rep. No. 369, Dept. of Structural Engineering, Cornell Univ., Ithaca, N.Y.
Hibbit, Karlsson, and Sorensen Inc. (HKS). (2002). ABAQUS standard, Version 6.3-1, HKS.
Höglund, T. (1978). Design of trapezoidal sheeting provided with stiffeners in the flanges and webs, Manus, Stockholm, Sweden.
Hoon, K. H., Rhodes, J., and Seah, L. K. (1993). “Tests on intermediately stiffened plate elements and beam compression elements.” Thin-Walled Struct., 16(1–4), 111–143.
Kesti, J., and Davies, J. M. (1999). “Local and distortional buckling of thin-walled short columns.” Thin-Walled Struct., 34(2), 115–134.
Kwon, Y. B. (1992). “Post-buckling behaviour of thin-walled channel sections.” Ph.D. thesis, School of Civil and Mining Engineering, Univ. of Sydney, Sydney, Australia.
Lepistö, J., Nikula, S., and Niemi, E. (1996). “Optimum design of cold-formed sections using generalized beam theory.” Coupled Instabilities in Metal Structures, (Proceedings of the CIMS'96 Conference held in Liège, Belgium), J. Rondal, D. Dubina, and V. Gioncu, eds., Imperial College Press, London, 101–108.
Narayanan, S., and Mahendran, M. (2003). “Ultimate capacity of innovative cold-formed steel columns.” J. Constr. Steel Res., 59(4), 489–508.
Prola, L. C. (2001). “Local and global stability of cold-formed steel members.” Ph.D. thesis, Technical Univ. of Lisbon, Lisbon, Portugal (in Portuguese).
Prola, L., and Camotim, D. (2002). “On the distortional post-buckling behavior of cold-formed lipp channel steel columns.” Proc., SSRC Annual Stability Conf., Seattle, 571–590.
Schafer, B. W. (2002). “Stiffened elements with multiple intermediate stiffeners and edge stiffened elements with intermediate stiffeners.” Proc. 16th Int. Specialty Conf. on Cold-Formed Steel Structures, Orlando, Fla., 41–52.
Schardt, R.(1989). Verallgemeinerte Technische Biegetheorie, Springer Verlag, Berlin, (in German).
Schardt, R. (1994). “Generalized beam theory—an adequate method for coupled stability problems.” Thin-Walled Struct., 19(2-4), 161–180.
Silvestre, N. (2005). “Generalized beam theory: New formulations, numerical implementation and applications.” Ph.D. thesis, IST, Technical Univ. of Lisbon, Lisbon, Portugal (in Portuguese)
Silvestre, N., and Camotim, D. (2003). “Non linear generalised beam theory for cold-formed steel members.” Int. J. Struct. Stab. Dyn., 3(4), 461–490.
Teter, A., and Kolakowsky, Z. (1996). “Interactive buckling of thin-walled open elastic beam-columns with intermediate stiffeners.” Int. J. Solids Struct., 33(3), 315–330.
Teter, A., and Kolakowsky, Z. (2004). “Interactive buckling and load carrying capacity of thin-walled beam-columns with intermediate stiffeners.” Thin-Walled Struct., 42(2), 211–254.
Ville de Goyet, V. (1995). “An advanced nonlinear spatial finite element.” Structural Stability and Design (Proceedings of an International Conference held in Sydney, Australia), S. Kitipornchai, G. Hancock, and M. Bradford, eds., Balkema, Lisse, The Netherlands, 249–254.
Yang, D. (2004). “Compression stability of high strength steel sections with low strain-hardening.” Ph.D. thesis, School of Civil and Mining Engineering, Univ. of Sydney, Sydney, Australia.
Yang, D., and Hancock, G. J. (2004). “Compression tests of high strength steel channel columns with interaction between local and distortional buckling.” J. Struct. Eng., 130(12), 1954–1963.
Yang, D., and Hancock, G. J. (2003). “Compression tests of cold-reduced high strength steel channel columns failing in the distortional mode.” Advances in Structures (Proceedings of the ASSCCA'03 Conference held in Sydney, Australia), G. Hancock, M. Bradford, T. Wilkinson, B. Uy, and K. Rasmussen, eds., Balkema, Lisse, The Netherlands, 303–308.
Young, B., and Yan, J. (2002). “Finite element analysis and design of fixed-ended plain channel columns.” Finite Elem. Anal. Design, 38(6), 549–566.
Information & Authors
Information
Published In
Copyright
© 2006 ASCE.
History
Received: Jan 31, 2005
Accepted: May 3, 2005
Published online: Apr 1, 2006
Published in print: Apr 2006
Notes
Note. Associate Editor: Benjamin W. Schafer
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.