Thin channel-channel welded cross-beams under cyclic bending

Fidelis R. Mashiri; Xiao-Ling Zhao; Mahen Mahendran

Thin channel-channel welded cross-beams under cyclic bending

Fidelis R. Mashiri
, Xiao-Ling Zhao
, Mahen Mahendran

School of Engineering, Design & Built Environment

Research output: Chapter in Book / Conference Paper › Conference Paper

Abstract

Fatigue tests were carried out on welded thin-walled Channel-Channel cross-beams. Cyclic bending load was applied to the bottom member. Constant stress amplitude loading was applied to the specimens resulting in crack initiation and propagation leading to failure of the specimens. Stress concentrations in the Channel-Channel cross-beams were measured using strip strain gauges at weld toes. The study relates the stress concentrations measured using strip strain gauges to the crack patterns observed during the fatigue tests. The Channel-Channel cross-beam fatigue test data is compared to fatigue rest data obtained from previous research on RHS-RHS, RHS-Angle and RHS-Channel cross-beams. Using the deterministic method, an existing fatigue design curve from the Australian Standard for Cold-Formed Steel Stroctures AS4600 is recommended for the design of Channe!-Channel cross-beams under bending.

Original language	English
Title of host publication	Proceedings of the 5th International Conference on Thin-Walled Structures, held in Brisbane, Qld., 18-20 June, 2008
Publisher	Queensland University of Technology
Number of pages	8
ISBN (Print)	9781741072396
Publication status	Published - 2008
Event	International Conference on Thin-Walled Structures - Duration: 1 Jan 2008 → …

Conference

Conference	International Conference on Thin-Walled Structures
Period	1/01/08 → …

Keywords

fatigue
strains and stresses
thin-walled structures
bending

Cite this

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title = "Thin channel-channel welded cross-beams under cyclic bending",

abstract = "Fatigue tests were carried out on welded thin-walled Channel-Channel cross-beams. Cyclic bending load was applied to the bottom member. Constant stress amplitude loading was applied to the specimens resulting in crack initiation and propagation leading to failure of the specimens. Stress concentrations in the Channel-Channel cross-beams were measured using strip strain gauges at weld toes. The study relates the stress concentrations measured using strip strain gauges to the crack patterns observed during the fatigue tests. The Channel-Channel cross-beam fatigue test data is compared to fatigue rest data obtained from previous research on RHS-RHS, RHS-Angle and RHS-Channel cross-beams. Using the deterministic method, an existing fatigue design curve from the Australian Standard for Cold-Formed Steel Stroctures AS4600 is recommended for the design of Channe!-Channel cross-beams under bending.",

keywords = "fatigue, strains and stresses, thin-walled structures, bending",

author = "Mashiri, \{Fidelis R.\} and Xiao-Ling Zhao and Mahen Mahendran",

year = "2008",

language = "English",

isbn = "9781741072396",

booktitle = "Proceedings of the 5th International Conference on Thin-Walled Structures, held in Brisbane, Qld., 18-20 June, 2008",

publisher = "Queensland University of Technology",

note = "International Conference on Thin-Walled Structures ; Conference date: 01-01-2008",

}

TY - GEN

T1 - Thin channel-channel welded cross-beams under cyclic bending

AU - Mashiri, Fidelis R.

AU - Zhao, Xiao-Ling

AU - Mahendran, Mahen

PY - 2008

Y1 - 2008

N2 - Fatigue tests were carried out on welded thin-walled Channel-Channel cross-beams. Cyclic bending load was applied to the bottom member. Constant stress amplitude loading was applied to the specimens resulting in crack initiation and propagation leading to failure of the specimens. Stress concentrations in the Channel-Channel cross-beams were measured using strip strain gauges at weld toes. The study relates the stress concentrations measured using strip strain gauges to the crack patterns observed during the fatigue tests. The Channel-Channel cross-beam fatigue test data is compared to fatigue rest data obtained from previous research on RHS-RHS, RHS-Angle and RHS-Channel cross-beams. Using the deterministic method, an existing fatigue design curve from the Australian Standard for Cold-Formed Steel Stroctures AS4600 is recommended for the design of Channe!-Channel cross-beams under bending.

AB - Fatigue tests were carried out on welded thin-walled Channel-Channel cross-beams. Cyclic bending load was applied to the bottom member. Constant stress amplitude loading was applied to the specimens resulting in crack initiation and propagation leading to failure of the specimens. Stress concentrations in the Channel-Channel cross-beams were measured using strip strain gauges at weld toes. The study relates the stress concentrations measured using strip strain gauges to the crack patterns observed during the fatigue tests. The Channel-Channel cross-beam fatigue test data is compared to fatigue rest data obtained from previous research on RHS-RHS, RHS-Angle and RHS-Channel cross-beams. Using the deterministic method, an existing fatigue design curve from the Australian Standard for Cold-Formed Steel Stroctures AS4600 is recommended for the design of Channe!-Channel cross-beams under bending.

KW - fatigue

KW - strains and stresses

KW - thin-walled structures

KW - bending

UR - http://handle.uws.edu.au:8081/1959.7/46068

M3 - Conference Paper

SN - 9781741072396

BT - Proceedings of the 5th International Conference on Thin-Walled Structures, held in Brisbane, Qld., 18-20 June, 2008

PB - Queensland University of Technology

T2 - International Conference on Thin-Walled Structures

Y2 - 1 January 2008

ER -

Thin channel-channel welded cross-beams under cyclic bending

Abstract

Conference

Keywords

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