Effect of Overload Cycles on Thin Steel Roof Claddings during Cyclonic Winds | Zendy

Mahen Mahendran | Zendy

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Effect of Overload Cycles on Thin Steel Roof Claddings during Cyclonic Winds

Author(s) -

Mahen Mahendran

Publication year - 1994

Publication title -

journal of testing and evaluation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.299

H-Index - 36

eISSN - 1945-7553

pISSN - 0090-3973

DOI - 10.1520/jte12663j

Subject(s) - roof , fastener , structural engineering , crest , materials science , engineering , geotechnical engineering , quantum mechanics , physics

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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