| 考虑耦合变形的无轴承旋翼气弹稳定性分析 |
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| 引用本文： | 高文杰,张野.考虑耦合变形的无轴承旋翼气弹稳定性分析[J].沈阳航空工业学院学报,2010,27(5):1-5. |
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| 作者姓名： | 高文杰 张野 |
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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;葫芦岛锌厂技工学校; |
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| 摘 要： | 无轴承旋翼存在强烈的非线性扭转-弯曲耦合变形。推导了桨叶的非线性应变-位移关系,应用Hamilton原理建立了多路传力的无轴承旋翼桨叶运动的有限元方程,气动力模型采用二维准定常片条理论,考虑了耦合变形对桨叶轴向弹性位移的影响,并构造了一个新的15自由度梁单元,分析了悬停状态下的无轴承旋翼气弹稳定性。数值结果表明：考虑耦合变形对轴向弹性位移的影响可以提高悬停状态下的无轴承旋翼气弹稳定性分析的精度。
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| 关 键 词： | 直升机 无轴承旋翼 多路传力 气弹稳定性 耦合 悬停 |
Aeroelastic stability of bearingless rotors with consideration of coupling effect in deformation |
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| GAO Wen-jie,ZHANG Ye.Aeroelastic stability of bearingless rotors with consideration of coupling effect in deformation[J].Journal of Shenyang Institute of Aeronautical Engineering,2010,27(5):1-5. |
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| Authors: | GAO Wen-jie ZHANG Ye |
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| Institution: | GAO Wen-jie1 ZHANG Ye2(1.School of Aeronautical Science and Engineering,Beijing University of Aeronautics and Astronautica,Beijing 100191,2.Huludao Xinchang Technical School,Liaoning Huludao 125003) |
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| Abstract: | The analysis of a bearingless rotor blade is complicated because of strongly nonlinear bending-torsion coupling effects.Nonlinear strain-displacement relations are presented and a bearingless rotor blade is modeled with multiple-load-path and the governing differential equations of motion are obtained from Hamilton's theory.Two-dimensional quasi-steady strip theory is used to evaluated aerodynamic forces.A new 15 DOF beam finite element is developed for analysis.Aeroelastic stability of bearingless rotors w... |
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| Keywords: | helicopter bearingless rotor multiple-load-path aeroelastic stability coupling hover |
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