| 弹性耦合对复合材料旋翼前飞气弹响应及载荷的影响 |
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| 引用本文： | 尹维龙,向锦武.弹性耦合对复合材料旋翼前飞气弹响应及载荷的影响[J].航空学报,2007,28(3):605-609. |
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| 作者姓名： | 尹维龙 向锦武 |
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| 作者单位： | 北京航空航天大学,航空科学与工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金
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教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 给出一套计算复合材料旋翼前飞气弹响应和桨榖载荷的方法，所用结构模型考虑横向剪切变形、剖面面外翘曲变形和复合材料弹性耦合的影响。气动模型采用准定常升力线理论和Drees线性入流模型，翼型升力、阻力系数来自风洞试验。构造出21自由度梁单元，应用Hamilton 原理推导出桨叶运动的有限元方程。在此基础上，研究弯曲-扭转和拉伸-扭转耦合对复合材料旋翼前飞气弹响应和桨榖振动载荷的影响。结果表明：弹性耦合对扭转方向的影响很大，对挥舞和摆振两个方向的影响很小；各种弹性耦合对桨榖振动载荷有着不同程度的影响，负的摆振弯曲 扭转耦合和正的拉伸 扭转耦合使桨榖垂直方向的振动载荷降低5%左右。
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| 关 键 词： | 直升机 复合材料桨叶 弹性耦合 气弹响应 振动载荷 |
| 文章编号： | 1000-6893(2007)03-0605-05 |
| 修稿时间： | 2006年4月10日 |
Aeroelastic Response and Hub Load of Composite Hingeless Rotor in Forward Flight with Elastic Couplings |
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| YIN Wei-long,XIANG Jin-wu.Aeroelastic Response and Hub Load of Composite Hingeless Rotor in Forward Flight with Elastic Couplings[J].Acta Aeronautica et Astronautica Sinica,2007,28(3):605-609. |
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| Authors: | YIN Wei-long XIANG Jin-wu |
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| Institution: | School of Aeronautical Science and Engineering, Beijing University of Aeronautics and Astronautics |
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| Abstract: | The aeroelastic response and hub load of a composite hingeless rotor in forward flight with elastic couplings are investigated in this paper. The structural model in this analysis includes the effects of transverse shear deformation, out of plane warping, and aeroelastic coupling. The aerodynamic loads acting on the blade are obtained using quasi-steady aerodynamic theory. Dress model is for the rotor inflow distribution. A 21-DOF beam finite element, including transverse shear DOF and warping DOF, is developed for analysis. |
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| Keywords: | helicopter composite blade elastic coupling aeroelastic response vibratory load |
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