Nonlinear Buckling Analysis of Cold-Formed Channel Sections

Year 2017, Volume: 2 Issue: 1, 95 - 101, 25.02.2017

Mustafa Durmaz

Abstract

The main objective of this paper is to
provide an efficient and accurate finite element model to understand the
behavior of cold-formed steel channel columns. The effects of initial local and
overall geometric imperfections have been taken into consideration in the
analysis. Failure loads and buckling modes as well as load-shortening curves of
plain channel columns were investigated in this study. The nonlinear finite
element model was verified against experimental results. The finite element
analysis was performed on plain channels compressed between pinned ends over
different column lengths, and column curves were obtained. An extensive
parametric study was carried out using the finite element model to study the
load eccentricity on the strength and behavior of channel columns. The column
strengths predicted from the finite element model were compared with the design
strengths calculated using the European Code, EN 1993-1-3 Eurocode 3: Design of
steel structures - Part 1-3: General rules - Supplementary rules for cold-formed
members and sheeting, for cold-formed steel structures.

Keywords

Cold-Formed Steel Channels, Buckling, Nonlinear Finite Element Analysis, EN 1993-1-3

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