Sub-zero temperature mechanical properties of cold-rolled steel sheets
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Description
Cold-formed steels are replacing conventional building materials in many building applications due to the many benefits including lightweight and low cost of construction. Recent research has focused on the fire resistance of cold-formed steel (CFS) construction at material and member levels and advanced the knowledge of their fire performance significantly. However, the performance of CFS members at sub-zero temperatures has not been investigated. Although several studies have been conducted on the mechanical properties of other types of steel at sub-zero temperatures, no studies have been conducted on sub-zero temperature mechanical properties of thin cold-formed steels. In this research, low and high strength cold-rolled steel sheets were tested in the temperature range of 20 to −70 °C to determine their sub-zero temperature mechanical properties. Predictive equations are proposed for yield strength, Young's modulus, upper yield strength, ultimate strength and stress at 2% total strain using the experimental results. Finally, suitable stress-strain models are recommended for the prediction of sub-zero temperature stress-strain curves and their use in numerical studies.
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ID Code: | 201320 | ||||
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Item Type: | Contribution to Journal (Journal Article) | ||||
Refereed: | Yes | ||||
ORCID iD: |
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Measurements or Duration: | 16 pages | ||||
Keywords: | Cold-rolled steel sheets, Cold-formed steel sections, Mechanical properties, Sub-zero temperatures, Two-stage stress-strain model | ||||
DOI: | 10.1016/j.tws.2020.106842 | ||||
ISSN: | 0263-8231 | ||||
Pure ID: | 61035583 | ||||
Divisions: | Current > Research Centres > Centre for Data Science Current > Research Centres > Centre for Materials Science Past > QUT Faculties & Divisions > Science & Engineering Faculty Current > QUT Faculties and Divisions > Faculty of Science Current > Schools > School of Civil & Environmental Engineering |
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Funding Information: | The authors wish to thank Queensland University of Technology and Australian Research Council (Grant Number LP170100952 ) for providing financial support including a PhD scholarship and experimental facilities to conduct this research, and Greg Paterson for his invaluable assistance with sub-zero temperature tests. | ||||
Copyright Owner: | 2020 Elsevier Ltd | ||||
Copyright Statement: | This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the document is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recognise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to qut.copyright@qut.edu.au | ||||
Deposited On: | 24 Jun 2020 00:06 | ||||
Last Modified: | 12 May 2024 17:04 |
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