Post-buckling capacity of bi-axially loaded rectangular steel plates

Jeppe Jönsson, T. H. Bondum

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Abstract

Results from a detailed numerical investigation of the post-buckling behaviour of rectangular simply supported steel plates subjected to biaxial in-plane loading are presented. The Steel plates are loaded through forced edge displacements. The effects of initial imperfections, aspect ratio, plate slenderness and edge displacement ratio are included in the investigations presented. Capacity interaction curves are established in the bi-axial stress domain. It turns out that for certain stress ratios the imperfections dominating the ultimate capacity are not affine to the lowest classical buckling mode for biaxial stress. It is of great interest that short wave imperfections of a lower magnitude compared to conventionally used imperfections are seen to lower the capacity of the bi-axially loaded plates. The topic is of
major concern in the flange plates of long span bridges with multi box girder configurations.
Original languageEnglish
Title of host publicationProceedings of the 6th International Conference on Coupled Instabilities in Metal Structures
Publication date2012
Pages571-578
Publication statusPublished - 2012
Event6th International Conference on Coupled Instabilities in Metal Structures - Strathclyde University, Glasgow, United Kingdom
Duration: 3 Dec 20125 Dec 2012
Conference number: 6

Conference

Conference6th International Conference on Coupled Instabilities in Metal Structures
Number6
LocationStrathclyde University
Country/TerritoryUnited Kingdom
CityGlasgow
Period03/12/201205/12/2012

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