A new model for fatigue load sequence effects in offshore wind turbine substructures and its implications for design life

R. C. Dragt, S. T. Hengeveld, J. Maljaars

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

Measurements at Offshore Wind Turbine (OWT) substructures show that typical loading patterns include overloads, underloads, and shifts in mean stress cycles, due to the everchanging wind direction. These events follow each other in time and are further expressed as load sequences. Load sequences may affect the fatigue life. A novel model consisting of a set of explicit equations is developed to estimate the fatigue crack growth including effects of load sequences. The model is based on both experiments and finite element simulations. The model allows for (combinations of) over- and underloads and mean changes. With this model, an extrapolation is made towards realistic loading on OWT substructures to gain insight into the expected effect of load sequences on the fatigue life.

Originele taal-2Engels
TitelProceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018
UitgeverijInternational Society of Offshore and Polar Engineers
Pagina's265-272
Aantal pagina's8
ISBN van geprinte versie978-188-065-387-6
StatusGepubliceerd - 1 jan 2018
Evenement28th International Ocean and Polar Engineering Conference, ISOPE 2018 - Sapporo, Japan
Duur: 10 jun 201815 jun 2018

Congres

Congres28th International Ocean and Polar Engineering Conference, ISOPE 2018
LandJapan
StadSapporo
Periode10/06/1815/06/18

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  • Citeer dit

    Dragt, R. C., Hengeveld, S. T., & Maljaars, J. (2018). A new model for fatigue load sequence effects in offshore wind turbine substructures and its implications for design life. In Proceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018 (blz. 265-272). International Society of Offshore and Polar Engineers.