钝尾缘叶片有限元模态与实验模态的对比研究

Comparative investigation of modal analysis of blunt trailing edge blade using finite element and experimental methods

中文关键词: 叶片  有限元模态  实验模态  振动

英文关键词: blade  finite element modal  experimental modal  vibration

中文摘要:

      风力机叶片的模态分析是保障风力机整机稳定性及其可靠性分析的重要基础。对中国科学院工程热物理研究所研发的100kW钝尾缘实验叶片进行了有限元模态及实验模态研究，得出了叶片前几阶模态的振型及频率，探讨了对叶片稳定性影响比较显著的模态特性，通过对有限元模态及实验模态结果对比，分析了产生误差的原因及产生共振的可能性,为风力机叶片的稳定运行提供了理论依据。

英文摘要:

      Rotor blade model analysis is the foundation for stability analysis of wind turbine. This paper presents the finite element modal and the experimental modal analysis of the 100kW experimental blade with blunt trailing edge designed by IET, the vibration and frequency of preceding orders were obtained, the modal characteristics which significantly influences the stability of the blade is explored, by comparing the analytic results of the modal analysis using finite element and experimental methods,and the causes of errors and the possibility of resonance are also analysed.