Reliability Analysis of a Mono-Tower Platform

Poul Henning Kirkegaard, I. Enevoldsen, John Dalsgaard Sørensen, Rune Brincker

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Resumé

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.
OriginalsprogEngelsk
Udgivelses stedAalborg
ForlagDept. of Building Technology and Structural Engineering, Aalborg University
Antal sider17
StatusUdgivet - 1988
NavnFracture and Dynamics
Nummer8
Vol/bindR8839
ISSN0902-7513

Fingerprint

Reliability analysis
Towers
Failure modes
Fatigue of materials
Miners
Fatigue damage
Stress concentration
Welds
Damping
Uncertainty
Fatigue strength

Bibliografisk note

PDF for print: 20 pp.

Emneord

  • Fatigue
  • Fatigue Failure
  • Fatigue Damage
  • Reliability
  • SN-Relations
  • Mono-Tower

Citer dette

Kirkegaard, P. H., Enevoldsen, I., Sørensen, J. D., & Brincker, R. (1988). Reliability Analysis of a Mono-Tower Platform. Aalborg: Dept. of Building Technology and Structural Engineering, Aalborg University. Fracture and Dynamics, Nr. 8, Bind. R8839
Kirkegaard, Poul Henning ; Enevoldsen, I. ; Sørensen, John Dalsgaard ; Brincker, Rune. / Reliability Analysis of a Mono-Tower Platform. Aalborg : Dept. of Building Technology and Structural Engineering, Aalborg University, 1988. 17 s. (Fracture and Dynamics; Nr. 8, Bind R8839).
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Kirkegaard, PH, Enevoldsen, I, Sørensen, JD & Brincker, R 1988, Reliability Analysis of a Mono-Tower Platform. Fracture and Dynamics, nr. 8, bind R8839, Dept. of Building Technology and Structural Engineering, Aalborg University, Aalborg.

Reliability Analysis of a Mono-Tower Platform. / Kirkegaard, Poul Henning; Enevoldsen, I.; Sørensen, John Dalsgaard; Brincker, Rune.

Aalborg : Dept. of Building Technology and Structural Engineering, Aalborg University, 1988. 17 s. (Fracture and Dynamics; Nr. 8, Bind R8839).

Publikation: Bog/antologi/afhandling/rapportRapportForskningpeer review

TY - RPRT

T1 - Reliability Analysis of a Mono-Tower Platform

AU - Kirkegaard, Poul Henning

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AU - Sørensen, John Dalsgaard

AU - Brincker, Rune

N1 - PDF for print: 20 pp.

PY - 1988

Y1 - 1988

N2 - 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.

AB - 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.

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KW - Fatigue Damage

KW - Reliability

KW - SN-Relations

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M3 - Report

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Kirkegaard PH, Enevoldsen I, Sørensen JD, Brincker R. Reliability Analysis of a Mono-Tower Platform. Aalborg: Dept. of Building Technology and Structural Engineering, Aalborg University, 1988. 17 s. (Fracture and Dynamics; Nr. 8, Bind R8839).