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Fatigue behavior of very high strength (VHS) circular steel tube to plate T-joints under in-plane bending

Citation

Jiao, H and Mashiri, F and Zhao, X-L, Fatigue behavior of very high strength (VHS) circular steel tube to plate T-joints under in-plane bending, Thin-Walled Structures, 68 pp. 106-112. ISSN 0263-8231 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 Elsevier Ltd.

DOI: doi:10.1016/j.tws.2013.03.006

Abstract

This paper investigated the fatigue behavior of very high strength (VHS) steel tubes (t < 2 mm) to steel plate T-joints under cyclic in-plane bending. VHS tubes, with a yield stress of 1350 MPa and an ultimate tensile strength of 1500 MPa, were welded to G350 steel plates using the GTAW welding method. Three different failure modes were observed. Stress concentration factors (SCFs) ranging from 1.2 to 2.2 were obtained through linear extrapolation at the weld toe. The fatigue life of VHS (t < 2 mm) to plate T-joints subject to in-plane bending was determined using the hot spot stress approach with a stress concentration factor SCF = 2.0 and the existing fatigue design equation in CIDECT Design guide No. 8. VHS tubes (t < 2 mm) showed better fatigue life than cold formed CHS (2 mm ≤ t < 4 mm) to plate T-joints when welded to plates and loaded under in-plane bending. A class of 102 was proposed for fatigue design of VHS-plate T-joints under in-plane bending based on the current steel design standards.

Item Details

Item Type:Refereed Article
Keywords:very high strength, fatigue life, T-joints, hot spot stress
Research Division:Engineering
Research Group:Civil Engineering
Research Field:Structural Engineering
Objective Division:Construction
Objective Group:Construction Materials Performance and Processes
Objective Field:Metals (e.g. Composites, Coatings, Bonding)
Author:Jiao, H (Dr Hui Jiao)
ID Code:85065
Year Published:2013
Web of Science® Times Cited:10
Deposited By:Engineering
Deposited On:2013-06-12
Last Modified:2017-11-06
Downloads:1 View Download Statistics

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