针对海上风电结构易发生疲劳破坏的情况,以某10 MW级单桩基础海上风电机组为研究对象,提出一种适用于其的新型阻尼装置,并通过模型结构试验、模型数值分析以及原型数值分析验证该阻尼装置的有效性。模型试验表明,当附加质量为1.450和2.175 kg时,阻尼装置带来的阻尼比提升为52.59%、103.11%。模型数值分析结果与模型试验结果高度一致,这表明数值分析的可靠性。原型数值分析中,当附加质量为50和100 t时,阻尼装置带来的阻尼比提升为36.17%、65.11%,说明该新型阻尼装置能有效提高海上风力机的结构阻尼。
Abstract
In view of the situation where fatigue failure is prone to occur in offshore wind power structures, a novel damping device has been proposed for a 10 MW offshore wind turbine based on a monopile. The efficacy of the damping device has been validated through a combination of model testing and numerical analysis. The model test demonstrates that the structural damping is increased by 52.59% and 103.11% due to the damping device, when the additional masses are 1.450 kg and 2.175 kg, respectively. The results of model numerical analysis align closely with the results of model test, thereby substantiating the reliability of the numerical analysis. The numerical analysis of the prototype demonstrates that the damping ratiio is enhanced by 36.17% and 65.11% due to the damping device when the additional masses are 50 t and 100 t, respectively. This evidence substantiates the efficacy of the new damping device in improving the structural damping of offshore wind turbines.
关键词
海上风电 /
风载荷 /
疲劳破坏 /
阻尼 /
模型结构 /
数值模拟
Key words
offshore wind turbines /
wind load /
fatigue failure /
damping /
model structures /
numerical simulation
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参考文献
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基金
国家重点研发计划（2019YFB1503703-02）
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