Design formulations for non-welded and welded aluminium columns using Continuous Strength Method

Ashraf, Mahmud and Young, Ben (2011) Design formulations for non-welded and welded aluminium columns using Continuous Strength Method. Engineering Structures, 33 12: 3197-3207. doi:10.1016/j.engstruct.2011.07.027

Author Ashraf, Mahmud
Young, Ben
Title Design formulations for non-welded and welded aluminium columns using Continuous Strength Method
Journal name Engineering Structures   Check publisher's open access policy
ISSN 0141-0296
Publication date 2011-12
Sub-type Article (original research)
DOI 10.1016/j.engstruct.2011.07.027
Volume 33
Issue 12
Start page 3197
End page 3207
Total pages 11
Place of publication Oxford, United Kingdom
Publisher Pergamon
Collection year 2012
Language eng
Abstract Aluminium members are used in structural applications due to their high strength-to-weight ratio, corrosion resistance, attractive appearance, recyclability, ease of production and availability. Thin aluminium sections are susceptible to buckling at a relatively low stress and welding makes it even worse; the design stress i.e. 0.2% proof stress is almost halved in the vicinity of the heat affected zones (HAZs). Currently available design codes have their guidelines both for welded and non-welded aluminium columns, but the predictions for welded aluminium columns are often quite inconsistent. The current research exploits a newly developed strain based design approach the ‘Continuous Strength Method’ (CSM) to predict the behaviour of aluminium members with SHS and RHS cross-sections subjected to compression. A new design curve is proposed herein to predict the cross-sectional resistance in compression; this concept is further extended to propose a new Perry type buckling curve to predict the flexural buckling resistance of aluminium columns. A simplified technique is proposed to include the effect of heat affected zone (HAZ) in CSM formulations. The CSM predictions for aluminium columns are compared against those obtained using available guidelines proposed by the European, American and Australian/ New Zealand standards of aluminium structures. The CSM predictions for non-welded columns are in line with the code predictions, whilst the proposed simple technique for transversely welded columns seems to produce significantly improved predictions.
Keyword Aluminium
Continuous Strength Method
Heat affected zones
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Author's personal copy attached: "This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues. Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited."

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2012 Collection
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Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 7 times in Scopus Article | Citations
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Created: Wed, 28 Sep 2011, 14:07:49 EST by Dr Mahmud Ashraf on behalf of School of Civil Engineering