Dynamic response mitigation of offshore wind turbines under ice and wind using an inerter-pendulum mass damper
Document Type
Article
Publication Date
5-30-2025
Abstract
Offshore wind turbines (OWTs) in cold regions are susceptible to ice-induced vibrations (IIVs). Accurate prediction of the ice-structure interactions and effective reduction of IIVs are crucial. This study presents a coupled analysis approach to elucidate the dynamic response characteristics of monopile OWTs subjected to varying sea ice velocities. An enhanced inerter-pendulum tuned mass damper, termed as PSI-PTMD, is adopted to reduce vibrations of the OWTs induced by ice and winds. To this end, a mathematical model of a 16-degree-of-freedom system representing a 5 MW baseline OWT equipped with a PSI-PTMD was derived. Turbulent wind fields were simulated using Turbsim, and the aerodynamic loads were calculated through the Blade Element Momentum (BEM) theory. The Hendrikse ice model was utilized to characterize the interactions between drifting ice and the substructure of the OWT under various ice velocities. The research findings indicate that the PSI-PTMD is effective in reducing the IIV of the OWT under various ice-breaking scenarios. Moreover, the PSI-PTMD outperforms the original pendulum damper in terms of better mitigation and a smaller stroke. This research advances the understanding of the interactions between ice and OWTs and provides a practical solution for mitigating the IIV of OWTs located in icy waters.
Publication Source (Journal or Book title)
Ocean Engineering
Recommended Citation
Zhu, B., Wu, Y., Sun, C., & Sun, J. (2025). Dynamic response mitigation of offshore wind turbines under ice and wind using an inerter-pendulum mass damper. Ocean Engineering, 327 https://doi.org/10.1016/j.oceaneng.2025.120932