Operational modal analysis campaign conducted during the construction of an offshore wind farm

  • 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.

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Author:Adelmo Fernandes, K. Winkler, W. Weijtjens, C. Devriendt
Frontdoor URLhttps://opus.bibliothek.uni-augsburg.de/opus4/102096
Parent Title (English):ISMA 2022 - International Conference on Noise and Vibration Engineering, Leuven, Belgium, 12-14 September 2022
Publisher:KU Leuven, Departement Werktuigkunde (LMSD)
Place of publication:Leuven
Type:Conference Proceeding
Year of first Publication:2022
Release Date:2023/02/15
First Page:2696
Last Page:2707
Institutes:Mathematisch-Naturwissenschaftlich-Technische Fakultät
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Materials Resource Management
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Materials Resource Management / Professur für Mechanical Engineering
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten