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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