无轴承式旋翼桨叶固有振动特性分析

李学常; 李书

无轴承式旋翼桨叶固有振动特性分析

李学常,
李书

北京航空航天大学航空科学与工程学院,北京 100191

基金项目: 国家自然科学基金(10772013)

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- 被引次数: 0
出版历程
- 收稿日期: 2010-05-11
- 修回日期: 2010-09-21
- 刊出日期: 2011-06-28

Natural vibration analysis of bearingless rotor blades

School of Aeronautics Science and Engineering, Beijing University of Aeronautics and Astronautics,Beijing 100191,China

摘要

摘要: 利用传递矩阵法,研究了无轴承式旋翼桨叶的固有振动特性,计算出了套管根部固支约束和弹簧约束时旋翼振动的固有频率,并给出了套管根部变距/摆振耦合对固有频率的影响,同时也研究了不同的模型参数对固有频率的影响,最后给出了根部弹簧约束时的部分模态振型.结果表明,套管根部变距/摆振耦合对固有频率影响不大,总距角对各阶模态频率影响比较复杂,桨叶质心线到弹性轴线的距离只对高阶模态的频率略有影响.
- 无轴承式旋翼 /
- 传递矩阵法 /
- 固有振动 /
- 固有频率 /
- 模态振型
Abstract: Natural vibration characteristics of bearingless rotor blades design were investigated by transfer matrix method,and the natural frequencies of blade vibration were calculated with a fixed or spring restrained torque tube end.Coupling of pitch/lead-lag was also considered.Parametric studies were performed to examine the effects of several model parameters on vibration natural frequencies.Some flapwise and chordwise bending mode shapes were revealed.The results indicate that pitch/lead-lag coupling of the torque tube end has little influence on natural frequencies,the pitch angle of blade has complex influence on natural frequencies,and the distance of mass center from elastic axis has slight influence on high natural frequencies.
- bearingless rotor /
- transfer matrix method /
- natural vibration /

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参考文献(12)

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