Long-term fatigue damage sensitivity to wave directionality in extra-large monopile foundations

The fatigue damage sensitivity to wave directionality on large-diameter monopile foundations for use in the offshore wind turbine industry is investigated. A frequency-domain approach with the Dirlik method is used to estimate fatigue damage and to evaluate the effect of wave spreading and swell separation compared to a total sea representation. To evaluate the long-term impact, 30?years of hindcast data from the Dogger Bank area are used. Furthermore, a computationally efficient time-domain model of a 10-MW offshore wind turbine is used to compare with the frequency-domain results. Results show that benefits in terms of structural fatigue can be obtained with directional considerations.

• Record URL:
  • https://doi.org/10.1177/1475090217727136
• Record URL:
  • http://journals.sagepub.com/doi/abs/10.1177/1475090217727136
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14750902
• Supplemental Notes:
  • Reprinted by permission of Sage Publications, Ltd.
• Authors:
  • Horn, Jan-Tore
  • Krokstad, Jørgen R
  • Amdahl, Jørgen
• Publication Date: 2018-2

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 37-49
• Serial:
  • Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment
  • Volume: 232
  • Issue Number: 1
  • Publisher: Sage Publications, Incorporated
  • ISSN: 1475-0902
  • EISSN: 2041-3084
  • Serial URL: http://pim.sagepub.com/

Subject/Index Terms

• TRT Terms: Deformation; Hydrodynamics; Mechanical fatigue; Offshore structures; Turbines; Wind power generation
• Subject Areas: Hydraulics and Hydrology; Maintenance and Preservation; Marine Transportation;

Filing Info

• Accession Number: 01664994
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 30 2018 4:31PM