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Behaviour of stainless steel plain channel section columns

Authorized Users Only
2020
Authors
Dobrić, Jelena
Ivanović, Jovana
Rossi, Barbara
Article (Accepted Version)
,
2020 Elsevier Ltd.
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Abstract
In this paper, the structural stability of cold-formed stainless steel plain channel columns under axial compression is investigated. Reliable finite element models for channel section columns are first developed and validated against experiments conducted on stainless steel lipped channel specimens. This is followed by a parametric study in which columns made of austenitic, ferritic and duplex stainless steel are assessed. The considered cross-section classes and column lengths cover the entire range of global slenderness. The effects of material and geometrical nonlinearity are considered in the numerical analysis. The numerically generated data are then employed to evaluate the accuracy of the current European and Australian design codes EN 1993-1-4 and AS/NZS 4673 respectively, for predicting the flexural and flexural-torsional column buckling resistance. The results show a necessity to improve the current buckling curve used to predic...t the flexural buckling resistance of plain channel section columns, currently adopted in EN 1993-1-4, whose use may lead to unsafe predictions, especially for the austenitic grade.

Keywords:
Stainless steel / Channel columns / Compression / Flexural buckling / Flexural-torsional buckling / Buckling curve / Finite element modelling
Source:
Thin-Walled Structures, 2020, 148
Projects:
  • Research on condition assessment and improvement methods of civil engineering structures in view of their serviceability, load-bearing capacity, cost effectiveness and maintenance (RS-36048)

DOI: https://doi.org/10.1016/j.tws.2020.106600

ISSN: 0263-8231

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URI
https://grafar.grf.bg.ac.rs/handle/123456789/2098
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