As the offshore industry moves towards deeper water developments and continues to embrace harsh environments, unbonded flexible pipes are increasingly being utilized as a cost effective riser solution. Furthermore, with the advent of issues such as nonpristine annuli environments, the fatigue performance of these flexible risers is becoming a critical issue. This paper presents an overview of the comparisons between deterministic and stochastic global fatigue analysis techniques. Methods used to perform both deterministic and stochastic analyses are outlined, from performing the global analyses to using local models to generate armor wire stresses and subsequent fatigue damage. The paper identifies the key issues in the analysis performed and presents key results and conclusions with regard to the characterization of the wave environment in the global fatigue analysis of flexible risers.
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e-mail: Annette.Harte@nuigalway.ie
e-mail: RussellSmith@mcs.com
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Technical Papers
Characterizing the Wave Environment in the Fatigue Analysis of Flexible Risers
Annette M. Harte,
Annette M. Harte
Department of Civil Engineering,
e-mail: Annette.Harte@nuigalway.ie
National University of Ireland
, Galway, Ireland
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Russell J. Smith
e-mail: RussellSmith@mcs.com
Russell J. Smith
MCS
, Exploration House, Offshore Technology Park, Bridge of Don, Aberdeen, AB23 8GX, Scotland
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John M. Sheehan
Frank W. Grealish
Annette M. Harte
Department of Civil Engineering,
National University of Ireland
, Galway, Irelande-mail: Annette.Harte@nuigalway.ie
Russell J. Smith
MCS
, Exploration House, Offshore Technology Park, Bridge of Don, Aberdeen, AB23 8GX, Scotlande-mail: RussellSmith@mcs.com
J. Offshore Mech. Arct. Eng. May 2006, 128(2): 108-118 (11 pages)
Published Online: November 15, 2005
Article history
Received:
March 31, 2005
Revised:
November 15, 2005
Citation
Sheehan, J. M., Grealish, F. W., Harte, A. M., and Smith, R. J. (November 15, 2005). "Characterizing the Wave Environment in the Fatigue Analysis of Flexible Risers." ASME. J. Offshore Mech. Arct. Eng. May 2006; 128(2): 108–118. https://doi.org/10.1115/1.2185129
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