Improved fatigue life of floating offshore wind turbine towers with tuned mass damper inerters (TMDIs)
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2023Access:
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James McAuliffe, Shubham Baisthakur, Brian Broderick and Breiffni Fitzgerald, Improved fatigue life of floating offshore wind turbine towers with tuned mass damper inerters (TMDIs), XII International Conference on Structural Dynamics, Delft, 2023Download Item:
Abstract:
Floating offshore wind turbines (FOWTs) are the largest rotating structures on
earth. FOWTs are very flexible and dynamically sensitive, they are also installed in very harsh
environments and exposed to stochastic environmental loading from wind and ocean waves. In
recent years dampers have been installed in the towers of offshore wind turbines to mitigate
vibrations. In this paper, structural dynamic models are used to demonstrate improvements in
the fatigue life of FOWT towers when they are equipped with a new type of damper - the tuned
mass damper inerter (TMDI). A multi-body dynamic approach is used to model the wind turbine
and the TMDI installed in the tower. The model is subjected to stochastically generated wind
and wave loads of varying magnitudes to develop wind-induced probabilistic demand models for
towers of FOWTs under model and load uncertainties. Numerical simulations are carried out to
determine the improvements in fatigue life of FOWT towers that can be achieved by installing
TMDIs in comparison to traditional tuned mass dampers (TMDs). The results show that the
TMDI outperforms the classical TMD when considering fatigue life.
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http://people.tcd.ie/fitzgeb7http://people.tcd.ie/bbrodrck
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PUBLISHEDDelft
Author: Fitzgerald, Breiffni; Broderick, Brian
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XII International Conference on Structural DynamicsType of material:
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Smart & Sustainable Planet , Renewable energies , Structural Engineering , Wind Energy and Wind Turbines , Wind, Wind Energy EngineeringDOI:
https://doi.org/10.1088/1742-6596/2647/3/032007Metadata
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