Contact buckling effects in built-up cold-formed steel beams.

Portioli, F; D Lorenzo, G; D'Amico, Bernardino; Landolfo, R; Mazzolani, F M

Abstract

The aim of this paper is to investigate the effects of contact interactions on local
buckling of a built-up cold-formed steel member assembled by mechanical fasteners. To this
end a finite element model was developed. The numerical model was validated against the
experimental results of four point bending tests carried out on three specimens with different
spacing of connections and configuration of web beads. The comparison with experimental
results showed a good agreement with test data in terms of both the ultimate bending strength
of the beam and the deformed shape at collapse. The calibrated finite element model was used
to estimate the effects on buckling resistance of contact forces among the parts of the beam,
varying the spacing of connections.

Citation

Portioli, F., D Lorenzo, G., D'Amico, B., Landolfo, R., & Mazzolani, F. M. (2012). Contact buckling effects in built-up cold-formed steel beams.

• Conference Name: 6th International Conference on Coupled Instabilities in Metal Structures
• Start Date: Dec 3, 2012
• End Date: Dec 5, 2012
• Publication Date: 2012
• Deposit Date: Mar 22, 2016
• Publicly Available Date: Mar 22, 2016
• Peer Reviewed: Peer Reviewed
• Keywords: Finite element model; buckling; cold-formed steel beam
• Public URL: http://researchrepository.napier.ac.uk/id/eprint/9719