Analytical calculation model for unstiffened elements with nonlinear stress-strain relationships under uniform compression | Steel Construction

Analytical calculation model for unstiffened elements with nonlinear stress-strain relationships under uniform compression

Articles - Steel Construction Heft 1/2009

Seite: 42-49

Autoren: Niederegger, P., Knobloch, M., Fontana, M.

DOI: 10.1002/stco.200910007

Stichworte: unstiffened elements, nonlinear stress-strain relationship, aluminium, stainless steel, analytical model

This paper presents an improved analytical calculation model for unstiffened elements with nonlinear stress-strain relationships (e.g. aluminium and stainless steel) subjected to uniform in-plane compression. The model takes material nonlinearity into account by means of the Ramberg-Osgood constitutive law. It is based on the results of a numerical parametric study of the load-carrying behaviour of unstiffened elements. A comparative study shows good agreement between test results and analytically determined strengths according to the new calculation model.

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Analytical calculation model for unstiffened elements with nonlinear stress-strain relationships under uniform compression

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