Interaction of Local, Distortional, and Global Buckling in CFS Lipped Channel Compression Members
Publication: Journal of Structural Engineering
Volume 144, Issue 2
Abstract
The strength of thin-walled cold formed steel (CFS) lipped channel compression members may be governed by yielding, local, distortional, or global buckling or any possible interaction among these buckling modes. The interaction between buckling modes reduces the strength of thin-walled members to values below its strengths as affected by any one of the independent buckling modes. The direct strength method (DSM), which significantly simplified the evaluation of design strength of CFS members, recognizes this reduction in strength caused by interaction of buckling modes, but explicitly handles local-global interaction only. A simple and accurate interaction equation that accounts for interaction between all possible buckling failure modes for CFS lipped channel compression members is proposed in this paper. The method requires the use of modified DSM equations for evaluating the strength under the different independent buckling modes (local and distortional). The proposed interaction equation is validated with both experimental as well as numerical results.
Get full access to this article
View all available purchase options and get full access to this article.
References
ABAQUS version 6.7 [Computer software]. Dassault Systèmes Simulia, Providence, RI.
AISI (American Iron and Steel Institute). (2016). “North American specification for the design of cold-formed steel structural members.” AISI S100–2016, Washington, DC.
Bebiano, R., Pina, P., Silvestre, N., and Camotim, D. (2008). “GBTUL—Buckling and vibration analysis of thin-walled members.” ⟨http://www.civil.ist.utl.pt/gbt⟩ (May 1, 2010).
Desmond, T. P. (1977). “The behavior and strength of thin-walled compression elements with longitudinal stiffeners.” Ph.D. thesis, Cornell Univ., Ithaca, NY.
Hancock, G. J., Kwon, Y. B., and Bernard, E. S. (1994). “Strength design curves for thin walled sections undergoing distortional buckling.” J. Constr. Steel Res., 31(2–3), 169–186.
Kumar, M. V. A. (2012). “Interaction of local, distortional and overall buckling in cold formed steel lipped channel compression members.” Ph.D. thesis, IIT Madras, Chennai, India.
Kumar, M. V. A., and Kalyanaraman, V. (2012). “Design strength of locally buckling stub-lipped channel columns.” J. Struct. Eng., 1291–1299.
Kumar, M. V. A., and Kalyanaraman, V. (2014). “Distortional buckling of CFS stiffened lipped channel compression members.” J. Struct. Eng., 04014099.
Kwon, Y. B., and Hancock, G. J. (1992). “Strength design curves for thin-walled sections undergoing local and distortional buckling.” J. Struct. Eng., 1786–1803.
Kwon, Y. B., Kim, B. S., and Hancock, G. J. (2009). “Compression tests of high strength cold-formed steel channels with buckling interaction.” J. Constr. Steel Res., 65(2), 278–289.
Kwon, Y. B., Kim, N. K., and Kim, B. S. (2005). “A study on the direct strength method for compression members undergoing mixed mode buckling.” Proc., Steel Structures ISSS’05, Korean Society of Steel Construction, Seoul, 108–119.
Landesmann, A., Camotim, D., and Garcia, R. (2016). “On the strength and DSM design of cold-formed steel web/flange-stiffened lipped channel columns buckling and failing in distortional modes.” Thin-Walled Struct., 105, 248–265.
Lim, B. S. (1985). “Buckling behaviour of asymmetric edge stiffened plates.” Ph.D. thesis, Univ. of Strthclyde, Glasgow, U.K.
Mulligan, G., and Peköz, T. (1987). “Local buckling interaction in cold-formed columns.” J. Struct. Eng., 604–620.
Schafer, B. (2002). “Local, distortional, and Euler buckling of thin-walled columns.” J. Struct. Eng., 289–299.
Schafer, B. W. (2008). “Review: The direct strength method of cold formed steel member design.” J. Construct. Steel Res., 64(7–8), 766–778.
Schafer, B. W., and Adany, S. (2006). “Buckling analysis of cold-formed steel members using CUFSM: Conventional and constrained finite strip methods.” Proc., 18th Int. Specialty Conf. on Cold-Formed Steel Structures, Cornell Univ., Ithaca, NY, 39–54.
Schafer, B. W., and Peköz, T. (1998a). “Computational modeling of cold formed steel: Characterizing geometrical imperfections and residual stresses.” J. Constr. Steel Res., 47(3), 193–210.
Schafer, B. W., and Peköz, T. (1998b). “Direct strength prediction of cold formed steel members using numerical elastic buckling solutions.” Proc., 14th Int. Specialty Conf. on Cold-Formed Steel Structures, Univ. of Missouri-Rolla, St. Louis, 69–76.
Silvestre, N., and Camotim, D. (2006). “Local-plate and distortional post-buckling behavior of cold-formed steel lipped channel columns with intermediate stiffeners.” J. Struct. Eng., 529–540.
Silvestre, N., Camotim, D., and Dinis, P. B. (2012). “Post-buckling behaviour and direct strength design of lipped channel columns experiencing local-distortional interaction.” J. Constr. Steel Res., 73, 12–30.
Standards Australia. (2005). “Cold-formed steel structures.” AS/NZS4600:2005, Sydney, NSW, Australia.
Weng, C. C., and Peköz, T. (1988). “Compression tests of cold-formed steel columns.” Proc., 9th Int. Specialty Conf. on Cold-Formed Steel Structures, Dept. of Civil Engineering, Univ. of Missouri-Rolla, Rolla, MO, 1–20.
Yang, D., and Hancock, G. (2004). “Compression tests of high strength steel channel columns with interaction between local and distortional buckling.” J. Struct. Eng., 1954–1963.
Young, B., and Rasmussen, K. (1998). “Design of lipped channel columns.” J. Struct. Eng., 140–148.
Young, B., Silvestre, N., and Camotim, D. (2013). “Cold-formed steel lipped channel columns influenced by local-distortional interaction: Strength and DSM design.” J. Struct. Eng., 1059–1074.
Zaras, J., and Rhodes, J. (1987). “Carefully controlled compression tests on thin-walled cold formed sections.” Applied solid mechanics, A. S. Tooth and J. Spence, eds., Vol. 2, Elsevier, New York, 519–551.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 144 • Issue 2 • February 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Nov 21, 2016
Accepted: Jul 7, 2017
Published online: Nov 22, 2017
Published in print: Feb 1, 2018
Discussion open until: Apr 22, 2018
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.