Title: Interaction between local and distortional buckling modes in cold-formed steel members subjected to pure bending

Authors: Jing Yin; Xiao-Xiong Zha; Long-Yuan Li

Addresses: Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China. ' Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China. ' School of Civil Engineering, University of Birmingham, Birmingham B15 2TT, UK

Abstract: This paper presents a numerical investigation on the interaction between local and distortional buckling in cold-formed steel sections. The effect of local buckling of compression flange on distortional buckling of compression flange and lip system is investigated using finite element methods. The analyses include the elastic linear buckling analysis to obtain the critical load of bifurcation buckling and the elastic non-linear analysis to obtain the limit point load of snap-through buckling. Influence of the local buckling on the post-distortional buckling is discussed. Initial geometric imperfection sensitivities of the post-distortional buckling on both local and distortional buckling are also examined.

Keywords: cold-formed steel sections; local buckling; distortional buckling; thin-walled; elastic nonlinear analysis; finite element method; FEM; compression flange; lip system.

DOI: 10.1504/IJCAT.2011.045818

International Journal of Computer Applications in Technology, 2011 Vol.42 No.4, pp.279 - 284

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 09 Mar 2012 *

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