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Structural response to axial testing of cold-formed stainless steel angle columns

Authorized Users Only
2020
Authors
Dobrić, Jelena
Filipović, Aljoša
Marković, Zlatko
Baddoo, Nancy
Article (Accepted Version)
,
020 Elsevier Ltd.
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Abstract
In this paper, the structural stability and compressive capacity of pin-ended cold-formed stainless steel angle columns with different slenderness were experimentally investigated. The experimental programme was performed on press-braked lean duplex stainless steel equal-leg angle sections with nominal dimensions of 80 × 80 × 4 mm, and involved material testing, initial imperfection measurements and 11 column tests. The test setup and procedure, together with the key experimental results, axial load vs. lateral deflections, axial load vs. torsional rotations and characterised failure modes, were fully reported and analysed. The experimental observations reveal that the failure mode type, including local/torsional, flexural-torsional and flexural effects, is highly dependent on the column's slenderness and initial imperfections. The measured compressive strengths were compared with the resistance predictions determined according to European and Australia/New Zealand codified design proc...edures. It was found that experimentally obtained ultimate capacities are significantly higher than those calculated according to the specifications. However, the database of test results is still quite limited, and a further research is needed to amplify the data needed to enable a more precise assessment of the codified procedures.

Keywords:
Experiment / Equal-leg angle section / Cold-formed / Flexural-torsional buckling / Flexural buckling / Stainless steel
Source:
Thin-Walled Structures, 2020, 156
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.2020.106986

ISSN: 0263-8231

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URI
https://grafar.grf.bg.ac.rs/handle/123456789/2096
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  • Катедра за материјале и конструкције
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