Brincker, Rune

Enevoldsen, I.

Kirkegaard, Poul Henning

Sørensen, John Dalsgaard

English

In this paper a reliability analysis of a Mono-tower platform is presented. The failure modes, considered, are yelding in the tube cross-sections, and fatigue failure in the butt welds. The fatigue failure mode is investigated with a fatigue model, where the fatigue strength is expressed through SN relations. In determining the cumulative fatigue damage, Palmgren-Miner's rule is applied. Element reliability as well as systems reliability is estimated using first-order reliability methods(FORM). The sensitivity of the systems reliability to various parameters is investigated. It is shown for the fatigue limit state is a significant failure mode for the Mono.tower platform. Further, it is shown for the fatigue failure mode the the largest contributions to the overall uncertainty are due to the damping ratio, the inertia coefficient, the stress concentration factor, the model uncertainties and the parameters describing the fatigue strength

    Aalborg UniversitetReliability Analysis of a Mono-Tower PlatformKirkegaard, Poul Henning; Enevoldsen, I.; Sørensen, John Dalsgaard; Brincker, RunePublication date:1988Document VersionEarly version, also known as pre-printLink to publication from Aalborg UniversityCitation for published version (APA):Kirkegaard, P. H., Enevoldsen, I., Sørensen, J. D., & Brincker, R. (1988). Reliability Analysis of a Mono-TowerPlatform. Dept. of Building Technology and Structural Engineering, Aalborg University. Fracture and DynamicsVol. R8839 No. 8General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright ownersand it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.            ? Users may download and print one copy of any publication from the public portal for the purpose of private study or research.            ? You may not further distribute the material or use it for any profit-making activity or commercial gain            ? You may freely distribute the URL identifying the publication in the public portal ?Take down policyIf you believe that this document breaches copyright please contact us at vbn@aub.aau.dk providing details, and we will remove access tothe work immediately and investigate your claim.Downloaded from vbn.aau.dk on: November 29, 2020

Reliability Analysis of a Mono-Tower Platform

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Reliability Analysis of a Mono-Tower Platform

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