Classification Of Ice-Induced Vibration Regimes Of Offshore Wind Turbines

T.C. Hammer, C.C. Owen, M.A. van den Berg, H. Hendrikse

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Ice-induced vibrations of offshore wind turbines on monopile foundations were investigated experimentally at the Aalto Ice Tank. A real-time hybrid test setup was developed allowing to accurately simulate the motion of a wind turbine in interaction with ice, incorporating the multi-modal aspects of the interaction and the effect of simultaneous ice and wind loading. Different vibration patterns were observed where some could be described based on the common terminology of intermittent crushing or continuous brittle crushing. However, not all resulting vibrations could be described accordingly. A combination of several global bending modes interacting with the ice resulted in high global ice loads and structural response. Such response is likely typical for an offshore wind turbine, owing to the dynamic characteristics of the structure. The type of interaction observed during the tests would be most critical for design as the largest bending moments in critical cross-sections of the foundations occur for this regime. A classification of ice-induced vibrations is proposed which encompasses the experimental observations for offshore wind turbines on the basis of the periodicity in the structural response at the ice action point.
Original languageEnglish
Title of host publicationProceedings of the ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering
Place of PublicationHamburg, Germany
PublisherThe American Society of Mechanical Engineers (ASME)
Number of pages8
Publication statusPublished - 2022
EventASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022 - Congress Center Hamburg, Hamburg, Germany
Duration: 5 Jun 202210 Jun 2022


ConferenceASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2022
Abbreviated titleOMAE 2022
Internet address

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  • ice tank tests
  • ice-structure interaction
  • multi-modal interaction
  • dynamic ice loading


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