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<p>To address the challenge of suppressing low-frequency vibrations in offshore wind turbine towers under complex environmental loads, this paper innovatively proposes a pendulum-tuned particle damper (PTPD). This design combines the high space utilization efficiency of pendulum structures with the broadband energy dissipation advantages of particle damping. A four-degree-of-freedom coupled tower-PTPD model and its Lagrangian equations of motion were established. Using the Finite Element-Discrete Element (FEM-DEM) coupling method, the effects of pendulum length and particle diameter on vibration suppression performance were systematically studied under three wind load conditions. Simulation results show that under Condition 1, a PTPD with a 3.50&#xa0;m pendulum length filled with 200&#xa0;mm iron-based particles achieves a peak vibration reduction rate of 58.1%, significantly reducing the tower’s vibration acceleration amplitude. A 1:65 scaled model was designed and tested, demonstrating that a combination of 625&#xa0;mm pendulum length and 10&#xa0;mm particles achieved a 58.0% vibration reduction rate. This validates the parameter optimization principles derived from simulations and provides an effective solution for anti-fatigue design of offshore wind turbines.</p>

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Multi-parameter pendulum tuned particle damper for vibration suppression in offshore wind turbine towers

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月25日

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  • Wangqiang Xiao,
  • Zhipeng Xie,
  • Wuping Yao,
  • Fei Mo,
  • Zhiqin Cai

摘要

To address the challenge of suppressing low-frequency vibrations in offshore wind turbine towers under complex environmental loads, this paper innovatively proposes a pendulum-tuned particle damper (PTPD). This design combines the high space utilization efficiency of pendulum structures with the broadband energy dissipation advantages of particle damping. A four-degree-of-freedom coupled tower-PTPD model and its Lagrangian equations of motion were established. Using the Finite Element-Discrete Element (FEM-DEM) coupling method, the effects of pendulum length and particle diameter on vibration suppression performance were systematically studied under three wind load conditions. Simulation results show that under Condition 1, a PTPD with a 3.50 m pendulum length filled with 200 mm iron-based particles achieves a peak vibration reduction rate of 58.1%, significantly reducing the tower’s vibration acceleration amplitude. A 1:65 scaled model was designed and tested, demonstrating that a combination of 625 mm pendulum length and 10 mm particles achieved a 58.0% vibration reduction rate. This validates the parameter optimization principles derived from simulations and provides an effective solution for anti-fatigue design of offshore wind turbines.