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    Mitigation of tower and out-of-plane blade vibrations of offshore monopile wind turbines by using multiple tuned mass dampers

    Access Status
    Fulltext not available
    Authors
    Zuo, H.
    Bi, Kaiming
    Hao, Hong
    Date
    2019
    Type
    Journal Article
    
    Metadata
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    Citation
    Zuo, H. and Bi, K. and Hao, H. 2019. Mitigation of tower and out-of-plane blade vibrations of offshore monopile wind turbines by using multiple tuned mass dampers. Structure and Infrastructure Engineering. 15 (2): pp. 269-284.
    Source Title
    Structure and Infrastructure Engineering
    DOI
    10.1080/15732479.2018.1550096
    ISSN
    1573-2479
    School
    School of Civil and Mechanical Engineering (CME)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP190103279
    URI
    http://hdl.handle.net/20.500.11937/74339
    Collection
    • Curtin Research Publications
    Abstract

    Offshore wind turbines are vulnerable to external vibration sources such as wind and wave excitations due to the increasing size and flexibility. It is necessary to mitigate the excessive vibrations of offshore wind turbines to ensure the safety and serviceability during their operations. Some research works have been carried out to control the excessive vibrations of the tower and the in-plane vibrations of blades. Very limited study focuses on the out-of-plane vibration mitigation of blades. In the present study, a detailed finite element (FE) model of the latest NREL 5MW wind turbine is developed by using the FE code ABAQUS. The tower and blades are explicitly modelled, and the rotating of the blades is considered. Multiple tuned mass dampers (MTMDs) are proposed to be installed in the tower and each blade to simultaneously mitigate the out-of-plane vibrations of the tower and blades when the wind turbine is subjected to the combined wind and wave loadings. The effectiveness and robustness of the proposed method are systematically investigated. Numerical results show that MTMDs can effectively mitigate the out-of-plane vibrations of the tower and blades when the wind turbine is in either the operational or parked condition.

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