Experimental investigation of cross-sectional bending capacity of cold-formed steel channels subject to local-distortional buckling interactionexperimental investigation of cross-sectional bending capacity of cold-formed steel channels subject to local-distortional buckling interaction
Ye, Jun and Meza, Francisco J. and Hajirasouliha, Iman and Becque, Jurgen and Shepherd, Paul and Pilakoutas, Kypros (2019) Experimental investigation of cross-sectional bending capacity of cold-formed steel channels subject to local-distortional buckling interactionexperimental investigation of cross-sectional bending capacity of cold-formed steel channels subject to local-distortional buckling interaction. Journal of Structural Engineering (United States), 145 (7). 04019064. ISSN 0733-9445 (https://doi.org/10.1061/(ASCE)ST.1943-541X.0002344)
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Abstract
This paper describes an experimental program carried out at the University of Sheffield to investigate the interaction of local and distortional buckling in cold-formed steel lipped channel beams. The channels were arranged in a back-to-back configuration and a total of six tests, including three different cross-sectional geometries, were completed. The specimens were tested in a four-point bending configuration with simply supported boundary conditions while being laterally braced at the loading points. The beams failed in the constant moment span by interaction of local and distortional buckling. The geometric imperfections of the channels were recorded before the test using a specially designed measuring rig employing laser sensors. Tensile coupons were also extracted from the flat portions and the corner regions of the cross sections in order to determine the material properties. Comparisons showed good agreement between the experimental results and the predictions of European design guidelines and current North American provisions, whereas other DSM formulations based on the NLD and NDL concepts resulted in rather conservative predictions.
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Item type: Article ID code: 81146 Dates: DateEvent1 July 2019Published6 May 2019Published Online20 November 2018AcceptedSubjects: Technology > Mechanical engineering and machinery
Technology > Engineering (General). Civil engineering (General)
Technology > Mining engineering. MetallurgyDepartment: Faculty of Engineering > Civil and Environmental Engineering Depositing user: Pure Administrator Date deposited: 17 Jun 2022 05:38 Last modified: 29 Oct 2024 05:57 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/81146