Operational Modal Analysis and Fluid-Structure Interaction

Michael Vigsø*, Thomas Kabel, Marius Glindtvad Tarpø, Rune Brincker, Christos Thomas Georgakis

*Corresponding author af dette arbejde

    Publikation: Bidrag til bog/antologi/rapport/proceedingKonferencebidrag i proceedingsForskningpeer review

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    Abstract

    Operational modal analysis (OMA) has in the last decade shown its potential in the field of offshore structures such as oilrigs and wind turbines etc. Typically, the estimated modal parameters will be used in conjunction with a finite element (FE) model. However since bottom-fixed offshore structures typically will be semi-submerged this affects the modal parameters by fluid-structure interaction. Fluid surrounding a structure is known to retard the response and locally introduce an increase in mass and damping. These local changes yield a complex alteration of the modal parameters and this paper highlights these effects by a wave flume experiment conducted on a cantilever structure. The structure is a scaled offshore structure and its modal parameters are examined at different water levels ranging from dry state to 60 % submerged.

    OriginalsprogEngelsk
    TitelProceedings of ISMA 2018 - International Conference on Noise and Vibration Engineering and USD 2018 - International Conference on Uncertainty in Structural Dynamics : ISMA2018-USD2018
    Antal sider11
    UdgivelsesstedLeuven
    ForlagKU Leuven, Department Werktuigkunde
    Publikationsdato2018
    Sider2793-2803
    Artikelnummer522
    ISBN (Trykt)978-907380299-5
    ISBN (Elektronisk)9789073802995
    StatusUdgivet - 2018
    BegivenhedInternational Conference on Noise and Vibration Engineering - Leuven, Belgien
    Varighed: 17 sep. 201819 sep. 2018
    Konferencens nummer: 28

    Konference

    KonferenceInternational Conference on Noise and Vibration Engineering
    Nummer28
    Land/OmrådeBelgien
    ByLeuven
    Periode17/09/201819/09/2018

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