Blar i Publikasjoner fra CRIStin på emneord "Damping"

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    • Evaluation of floor vibration properties using measurements and calculations 

      Homb, Anders; Kolstad, Svein Terje (Journal article; Peer reviewed, 2018)
      Timber floor constructions are very common in the Nordic countries, for instance in single- and multifamily buildings. But building with wood is increasing in popularity for other building categories and there is wider ...

    • Low Frequency Excitation and Damping of Four MODUs in Severe Seastates With Current 

      Fonseca, Nuno; Stansberg, Carl Trygve; Larsen, Kjell; Bjørkli, Rune; Vigesdal, Tjerand; Dalane, Oddgeir (ASME digital collection;OMAE2018-77873, Chapter, 2018-06-26)
      Model tests have been performed with four mobile offshore drilling units (MODUs) with the aim of identifying wave drift forces and low frequency damping. The MODUs configuration is different, namely on the number and ...

    • A Physical-Based Damping Model of Gap and Moonpool Resonance in WAMIT 

      Ravinthrakumar, Senthuran; Ommani, Babak; Kristiansen, Trygve; Olimb, Idunn; Lyngvær, Bernt Karsten (Chapter; Peer reviewed, 2022)
      An engineering model to estimate and incorporate quadratic damping of the piston-mode moonpool responses in the proximity of the piston mode period is proposed. The model provides a physical-based equivalent linearized ...

    • Wave Drift Forces and Low Frequency Damping on the Exwave FPSO 

      Fonseca, Nuno; Stansberg, Carl Trygve (ASME Proceedings | Offshore Technology;OMAE2017-62540, Chapter, 2017-06-25)
      A method is followed in the present analysis to estimate realistic surge and sway wave drift force coefficients for the Exwave FPSO. Model test data is used to identify the difference frequency wave exciting force coefficients ...

    • Wave Drift Forces and Low Frequency Damping on the Exwave Semi-Submersible 

      Fonseca, Nuno; Stansberg, Carl Trygve (ASME Proceedings | Offshore Technology;OMAE2017-62539, Chapter, 2017-06-25)
      The paper presents realistic horizontal wave drift force coefficients and low frequency damping coefficients for the Exwave semi-submersible under severe seastates. The analysis includes conditions with collinear waves and ...