Interactive buckling of steel C-beams with different lengths – From short to long beams. (April 2018)

• Record Type: Journal Article
• Authors: Kolakowski, Zbigniew; Jankowski, Jacek
• Is Part Of: Thin-walled structures. Volume 125(2018)
• Page Start: 203
• Page End: 210
• Publication Date: 2018-04
• Subjects: C-beams -- Bending -- Interactive buckling -- Different lengths -- Koiter's approach -- Semi-analytical method; Thin-walled structures -- Periodicals; 690.1
• DOI: 10.1016/j.tws.2018.01.027
• Languages: English
• ISSNs: 0263-8231

Abstract

Abstract: The present paper deals with the interactive buckling of thin-walled C-beams with imperfections, subjected to the bending moment in the web plane when the shear lag phenomenon and distortional deformations are taken into account. A plate model (2D) was adopted for the C-beams. The structures were assumed to be simply supported at the ends. Two kinds of cross-sections in the C-beams were considered: channels and lip channels. A method of the modal solution to the coupled buckling problem within Koiter's asymptotic theory, using the semi-analytical method (SAM) and the transition matrix method, was applied. The calculations were carried out for C-beams of different lengths – from short through medium-long to long beams. Highlights: A method of the modal solution to the coupled buckling problem within the Koiter's asymptotic theory was applied. An influence of the distortional-lateral buckling mode on the interactive buckling and load carrying capacity of thin-walled C-beams subjected to the bending moment in the web plane. The shear lag phenomenon and distortional deformations being taken into account. Special attention is drawn to an influence of secondary global buckling modes. The calculations were carried out for C-beams from short through to medium-long to long beams.