A study of the behaviour of C channel under pure bending applied in such a way as to create compressive stress at the tip of the webs is presented. The analysis encompasses the entire loading history of the beam, from the linear elastic stage, through the buckling of the webs, to the unloading stage after the formation of a plastic hinge. The theoretical predictions were compared to the test results of a series of seven beams. Close correlation was found between theory and experiment over the entire loading range explored, especially for sections with a width-thickness ratio of less than 50.
Get full access to this article
View all access options for this article.
References
1.
YamakiN.Post-buckling behaviour of rectangular plates with small initial curvature loaded in edge compression. J. Appl. Mechanics, September 1959, 26, 407.
2.
WinterG.Strength of thin steel compression flanges. Cornell University Experimental Station reprint 32, 1947.
3.
ChilverA. H.Structural problem in the use of cold-formed steel section. Proc. ICE, 1961, 20, 233.
4.
WalkerA. C.The post-buckling behaviour of simply supported plates. Aero Q., August 1969, XX, 203.
5.
AllenH. G.BulsonP. S.Background to buckling, 1980 (McGraw-Hill, London).
6.
RhodesJ.HarveyJ. M.FokW. C.The load carrying capacity of initially imperfect eccentrically loaded plates. Int. J. Mech. Sci., 1975, 17, 161–175.
7.
MurrayN. W.KhooP. S.Some plastic mechanisms in the local buckling of thin-walled steel structures. Int. J. Mech. Sci., 1981, 23(12), 703–713.
