Fatigue Analysis of a Point Absorber WEC subjected to Passive and Reactive Control

Andrew Stephen Zurkinden, Søren Heide Lambertsen, Lars Damkilde, Zhen Gao, Torgeir Moan

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

Resumé

This paper investigates the effect of a passive and reactive control mechanism on the accumulated fatigue damage of a wave energy converter (WEC). Interest is focused on four structural details of the Wavestar arm which is used as a case study here. The fatigue model is set up as an independent and generic toolbox which can be applied to any other global response model of a WEC device combined with a control system. The stress responses due to the stochastic wave loads are computed by a FEM model using the frequency-domain approach. The fatigue damage is calculated based on the spectral-based fatigue analysis in which the fatigue is described by the given spectral moments of the stress response. The question will be discussed, which control case is more favorable regarding the trade off between fatigue damage reduction and increased power production.
OriginalsprogEngelsk
ArtikelnummerOMAE-14-1007
TidsskriftJournal of Offshore Mechanics and Arctic Engineering
Vol/bind137
Udgave nummer5
Sider (fra-til)051901-051901-12
Antal sider12
ISSN0892-7219
DOI
StatusUdgivet - 2015
BegivenhedASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering - San Francisco, CA, USA
Varighed: 8 jun. 201413 jun. 2014

Konference

KonferenceASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
LandUSA
BySan Francisco, CA
Periode08/06/201413/06/2014

Fingerprint

Fatigue damage
Fatigue of materials
Control systems
Finite element method

Emneord

  • Wave energy converter
  • Point absorber
  • Fatigue analysis

Citer dette

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abstract = "This paper investigates the effect of a passive and reactive control mechanism on the accumulated fatigue damage of a wave energy converter (WEC). Interest is focused on four structural details of the Wavestar arm which is used as a case study here. The fatigue model is set up as an independent and generic toolbox which can be applied to any other global response model of a WEC device combined with a control system. The stress responses due to the stochastic wave loads are computed by a FEM model using the frequency-domain approach. The fatigue damage is calculated based on the spectral-based fatigue analysis in which the fatigue is described by the given spectral moments of the stress response. The question will be discussed, which control case is more favorable regarding the trade off between fatigue damage reduction and increased power production.",
keywords = "Wave energy converter, Point absorber, Fatigue analysis, Wave energy converter, Point absorber, Fatigue analysis",
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Fatigue Analysis of a Point Absorber WEC subjected to Passive and Reactive Control. / Zurkinden, Andrew Stephen; Lambertsen, Søren Heide; Damkilde, Lars; Gao, Zhen; Moan, Torgeir.

I: Journal of Offshore Mechanics and Arctic Engineering, Bind 137, Nr. 5, OMAE-14-1007, 2015, s. 051901-051901-12.

Publikation: Bidrag til tidsskriftKonferenceartikel i tidsskriftForskningpeer review

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