Post-Buckling Behavior of Determinate Beams

by Scott T. Woolcock, Res. Student in Civ. Engrg.; Univ. of Sydney, Sydney, Australia,
Nicholas S. Trahair, (A.M.ASCE), Assoc. Prof. in Civ. Engrg.; Univ. of Sydney, Sydney, Australia,

Serial Information: Journal of the Engineering Mechanics Division, 1974, Vol. 100, Issue 2, Pg. 151-171

Document Type: Journal Paper


A rigorous and uncomplicated theory for the large elastic deformations of beams is presented, and the theory is verified experimentally by investigating the post-buckling behavior of I-section and narrow rectangular section beams. The post-buckling strength of determinate beams is found to be small until the deformations become gross. The results give a more complete understanding of buckling and post-buckling in determinate beams, and the theory provides a basis for the investigation of the post-buckling behavior of redundant beams.

Subject Headings: Post buckling | Structural behavior | Beams | Deformation (mechanics) | Elastic analysis | Verification | Structural strength

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