Numerical Modelling of Web Crippling Under Realistic End Support Conditions

Nagy, Örs and Sánduly, Annabella and Gobesz, F.-Zsongor (2024) Numerical Modelling of Web Crippling Under Realistic End Support Conditions. MŰSZAKI TUDOMÁNYOS KÖZLEMÉNYEK (EN), 21. pp. 67-72. ISSN 2601-5773

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Abstract

Determination of web crippling resistance of thin-walled steel sections can be achieved by two different methods: by laboratory experiments or with numerical models, dividing the geometry into finite elements. Trapezoidal sheeting is particularly sensitive to concentrated loading. The support conformation has a signif icant influence on the resistance of the profile. Understanding the influential support parameters and taking into account in calculations is essential, since it can have a major influence on the bearing resistance and failure mode. The American and the European standards differ in their approach regarding the boundary conditions. The Eurocode does not consider the fixing of the sheets to the roof purlins or beams, which is generally applied in the construction industry. The present study investigates the web crippling resistance of trapezoidal cross-sections with numerical finite element models for several support configurations, consid ering also the influence of bottom flange fixing.

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