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Web crippling behaviour of cold-formed steel channel sections with offset web holes subjected to interior-two-flange loading

Uzzaman, Asraf and Lim, James and Nash, David and Rhodes, James and Young, B. (2012) Web crippling behaviour of cold-formed steel channel sections with offset web holes subjected to interior-two-flange loading. Thin-Walled Structures, 50 (1). pp. 76-86. ISSN 0263-8231

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    Abstract

    Cold-formed steel sections are often used as wall studs or floor joists; such sections often include web holes for ease of installation of the services. Cold-formed steel design codes, however, do not consider the effect of such web holes. In this paper, a combination of experimental tests and non-linear elasto-plastic finite element analyses are used to investigate the effect of such holes on web crippling under interior-two-flange(ITF loading conditions; the cases of both flange fastened and flange unfastened are considered. A good agreement between the experimental tests and finite element analyses was obtained. The finite element model was then used for the purposes of a parametric study on the effect of different sizes and position of holes in the web. It was demonstrated that the main factors influencing the web crippling strength are the ratio of the hole depth to the depth of the web, and the ratio of the distance from the edge of the bearing to the flat depth of web. Design recommendations in the form of web crippling strength reduction factors are proposed, that are conservative to both the experimental and finite element results.

    Item type: Article
    ID code: 38268
    Keywords: steel behaviour, cold-formed steel, web crippling behaviour, flange Loading, Mechanical engineering and machinery, Mining engineering. Metallurgy, Mechanical Engineering, Mechanics of Materials, Computational Mechanics, Metals and Alloys
    Subjects: Technology > Mechanical engineering and machinery
    Technology > Mining engineering. Metallurgy
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Faculty of Engineering > Civil and Environmental Engineering
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    Depositing user: Pure Administrator
    Date Deposited: 07 Mar 2012 12:30
    Last modified: 27 Mar 2014 14:46
    URI: http://strathprints.strath.ac.uk/id/eprint/38268

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