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Abstract
Offshore wind turbines are designed to balance cyclic loading from wind, the rotating machinery and the
waves against the fatigue limits of the materials used. A proper understanding of the structural dynamics of
the completed structure is necessary for an accurate fatigue life calculation. Early designs underestimated the
initial stiffness of the soil-structure interaction of monopiles. As a result, the design models underestimated
the natural frequencies, and so the fatigue life. Recent farms still see some mismatch in structural dynamics
between design and the real world. The current publication will discuss the results of a unique operational
modal analysis campaign that was conducted during the installation of an offshore wind farm inside the scope
of SoilTwin project aiming to further improve the understanding of how offshore wind turbines behave once
installed. It will be also discussed how the intermediate stages of the turbine can be used to further improve
structural models.
waves against the fatigue limits of the materials used. A proper understanding of the structural dynamics of
the completed structure is necessary for an accurate fatigue life calculation. Early designs underestimated the
initial stiffness of the soil-structure interaction of monopiles. As a result, the design models underestimated
the natural frequencies, and so the fatigue life. Recent farms still see some mismatch in structural dynamics
between design and the real world. The current publication will discuss the results of a unique operational
modal analysis campaign that was conducted during the installation of an offshore wind farm inside the scope
of SoilTwin project aiming to further improve the understanding of how offshore wind turbines behave once
installed. It will be also discussed how the intermediate stages of the turbine can be used to further improve
structural models.
| Original language | English |
|---|---|
| Title of host publication | ISMA 2022 - International Conference on Noise and Vibration Engineering |
| Publisher | KU Leuven, Departement Werktuigkunde (LMSD) |
| Pages | 2696-2707 |
| Number of pages | 12 |
| ISBN (Electronic) | 9789082893151 |
| Publication status | Published - 25 Nov 2022 |
| Event | 2022 ISMA International Conference on Noise and Vibration Engineering - KU Leuven, Leuven, Belgium Duration: 12 Sep 2022 → 14 Sep 2022 http://past.isma-isaac.be/isma2022/proceedings/program/ |
Conference
| Conference | 2022 ISMA International Conference on Noise and Vibration Engineering |
|---|---|
| Country/Territory | Belgium |
| City | Leuven |
| Period | 12/09/22 → 14/09/22 |
| Internet address |
Bibliographical note
Funding Information:This research was part of the Blauwe Cluster project'SoilTwin' with the support of VLAIO and the ETF project'windSOIL' with the support of the Belgian FOD economie. The authors would also like to express their gratitude to the people of Otary to facilitate these measurements.
Publisher Copyright:
© 2022 Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.
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Dive into the research topics of 'Operational modal analysis campaign conducted during the construction of an offshore wind farm'. Together they form a unique fingerprint.Projects
- 2 Finished
-
VLADBC2: cSBO SOIL-TWIN: data driven design optimization and smart monitoring of monopile
Devriendt, C., Weijtjens, W., Sastre Jurado, C. & Stuyts, B.
1/01/20 → 30/09/23
Project: Applied