Effect of overload cycles on thin steel roof claddings during cyclonic winds

Mahendran, M. (1994) Effect of overload cycles on thin steel roof claddings during cyclonic winds. Journal of Testing and Evaluation, 22(5), pp. 451-457.


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During an investigation on thin steel roof claddings under simulated cyclonic wind loading, it was found that trapezoidal roof claddings behaved quite differently to corrugated (arc and tangent type) roof claddings due to the presence of overload cycles. The overload cycles caused a reduction in fatigue life for corrugated roofing whereas the reverse occurred for trapezoidal roofing. This contrasting behavior of the two crest-fixed roof claddings was investigated using small scale roofing models instead of the commonly used large scale two-span roof claddings. It was found that overload cycles formed a weaker locally dimpled mechanism around the fastener holes of corrugated roofing and thus accelerated the fatigue-caused pull-through failure. In contrast, a stronger deformed shape was formed in trapezoidal roofing which delayed the pull-through failure. Both laboratory testing and finite element analysis of small scale models were used to study the contrasting behavior of roof claddings.

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ID Code: 64368
Item Type: Journal Article
Refereed: Yes
Additional Information: Compilation and indexing terms, Copyright 2013 Elsevier Inc. 1995052481408 Cyclonic winds Overload cycles Thin steel roof claddings
Keywords: Roofs, Corrugated metal, Fatigue of materials, Fatigue testing, Finite element method, Steel structures, Storms, Structural analysis, Structural loads, Wind effects
DOI: 10.1520/JTE12663J
ISSN: 00903973
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 20 Nov 2013 22:48
Last Modified: 15 Jan 2015 02:38

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