Articles | Volume 9, issue 5
https://doi.org/10.5194/wes-9-1089-2024
https://doi.org/10.5194/wes-9-1089-2024
Research article
 | 
07 May 2024
Research article |  | 07 May 2024

Effect of scour on the fatigue life of offshore wind turbines and its prevention through passive structural control

Yu Cao, Ningyu Wu, Jigang Yang, Chao Chen, Ronghua Zhu, and Xugang Hua

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Thematic area: Materials and operation | Topic: Fatigue
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Cited articles

Amirafshari, P., Brennan, F., and Kolios, A.: A fracture mechanics framework for optimising design and inspection of offshore wind turbine support structures against fatigue failure, Wind Energ. Sci., 6, 677–699, https://doi.org/10.5194/wes-6-677-2021, 2021. 
Aydin, E., Öztürk, B., Kebeli, Y. E., and Gültepe, G.: An Experimental Study on the Effects of Different Pendulum Damper Designs on Structural Behavior, in: Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures, edited by: Cimellaro, G. P., Lecture Notes in Civil Engineering, vol 309, 240–253, https://doi.org/10.1007/978-3-031-21187-4_18, 2023. 
Bergua, R., Robertson, A., Jonkman, J., and Platt, A.: Specification Document for OC6 Phase II: Verification of an Advanced Soil-Structure Interaction Model for Offshore Wind Turbines, Golden, CO, National Renewable Energy Laboratory, https://www.nrel.gov/docs/fy21osti/79938.pdf (last access: 23 April 2024), 2021. 
Branlard, E.: Wind Turbine Aerodynamics and Vorticity-Based Methods: Fundamentals and recent applications, Springer, https://doi.org/10.1007/978-3-319-55164-7, 2017. 
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Short summary
This study investigates the offshore wind turbine support structure’s fatigue life by a rapid numerical model which considers the effects of scour and a tuned mass damper. An optimization technique is proposed to find the damper's optimal parameters, considering time-varying scour. It is found that the damper optimized by the proposed optimization technique performs better than an initially designed damper in terms of fatigue life enhancement.
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