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Fatigue tests and design of thin CHS-plate T-joints under cyclic in-plane bending


Mashiri, F and Zhao, XL, Fatigue tests and design of thin CHS-plate T-joints under cyclic in-plane bending, Thin-Walled Structures, 45, (4) pp. 463-472. ISSN 0263-8231 (2007) [Refereed Article]

DOI: doi:10.1016/j.tws.2007.03.002


A review of existing fatigue design guidelines has been undertaken and shows that there are no fatigue design recommendations for circular hollow section-to-plate T-joints subjected to in-plane bending. This paper therefore reports on the high cycle fatigue behaviour of welded thin-walled circular hollow section (CHS) tubes of thicknesses less than 4 mm that are fillet-welded onto a plate to form a base plate moment connection. The resultant thin CHS-Plate T-joints are subjected to cyclic in-plane bending load to determine their fatigue strength at different stress ranges. The S-N data from the failed thin CHS-Plate T-joints is analysed using the least-squares method of statistical analysis to obtain a design S-N curve. The derived design S-N curve for the thin CHS-Plate T-joints is compared to existing design S-N curves and also that of square hollow section (SHS)-to-plate T-joints under in-plane bending in current fatigue design guidelines. The thin CHS-Plate T-joints are found to have a better fatigue strength compared to the existing S-N curve for SHS-Plate T-joints under in-plane bending. An appropriate design S-N curve from the group of existing design S-N curves is adopted for the design of thin CHS-Plate T-joints. © 2007 Elsevier Ltd. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Civil engineering
Research Field:Structural engineering
Objective Division:Construction
Objective Group:Construction materials performance and processes
Objective Field:Metals
UTAS Author:Mashiri, F (Dr Fidelis Mashiri)
ID Code:49901
Year Published:2007
Web of Science® Times Cited:14
Deposited By:Engineering
Deposited On:2008-04-23
Last Modified:2009-12-02

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