充气式机翼的颤振特性分析

谢长川; 王伟建; 杨超

充气式机翼的颤振特性分析

北京航空航天大学航空科学与工程学院, 北京 100191

基金项目: 国家自然科学基金资助项目(90716006,10902006); 高等学校博士点基金资助项目(20091102110015)

详细信息

作者简介:
谢长川(1976-),男,陕西西安人,博士后,xiechangc@163.com.

中图分类号: V 211.47
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出版历程
- 收稿日期: 2010-07-08
- 网络出版日期: 2011-07-30

Flutter analysis of inflatable wings

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

摘要

摘要: 充气式机翼的结构刚度由内充气压决定,其颤振特性需要建立静、动力学耦合的分析方法.机翼结构刚度和固有振动特性需要在静力分析基础上计算,进一步计算非定常气动力,从而采用传统的颤振计算方法分析其颤振特性.针对某一充气式机翼采用膜单元建立了有限元模型.在不同内充压条件下,对充气机翼进行了静力分析得到其结构刚度;然后对机翼进行模态计算和颤振分析.研究表明:各阶模态的频率随内充气压的升高而升高;除典型的弯扭模态外,充气机翼的弦向弯曲模态频率较低;充气机翼的颤振形式除常规的弯扭模态耦合外,弦向弯曲模态同样会发生颤振;机翼的临界颤振速度随内充压的变化近似呈分段线性变化;临界颤振模态及耦合分支在一定气压范围内保持不变.
- 充气式机翼 /
- 膜单元 /
- 刚度 /
- 模态分析 /
- 颤振
Abstract: The stiffness of inflatable wing is determined by the internal pressure, so the static and dynamic coupling method should be established to solve the flutter problems of such wings. The structural stiffness and the normal modes should be calculated on the base of the static analysis. Then the unsteady aerodynamics can be calculated and the flutter characteristics of the wing can be analyzed using the traditional methods. For an inflated wing, the finite element model was created using membrane elements. The structure stiffness of the wing was derived by the static analysis and the normal modes were calculated. Then the flutter of the wing was analyzed. The results show that, as the internal pressure increases, each mode-s natural frequencies increases. Except for the typical bending and torsion modes, the chord-wise bending modes have low frequencies. The chord-warping modes can induce flutter besides the conventional bending-torsion flutter type. The critical flutter speed of the inflatable wing presents nearly linearity with internal pressure increased in specific range and the corresponding flutter modes dose not change as well.
- inflatable wing /
- membrane element /
- stiffness /
- modal analysis /
- flutter

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参考文献(1)

[1] Norris R K,Pulliam W J.Historical perspectiveon inflatable wing structures .AIAA-2009-2145,2009 [2] Andrew S,Johnathan R,Suzanne S.Aeroelastic deformation and bucking of inflatable wings under dynamic loads .AIAA-2007-2239,2007 [3] 纪秀玲,何光林.管式发射巡飞弹的气动特点与设计[J].北京理工大学学报,2008,28(11):953-956 Ji Xiuling,He Guanglin.Aerodynamic characteristics of guan-launched loitering munitions and Its shape design[J].Journal of Beijing Institute of Technology,2008,28(11):953-956(in Chinese) [4] 朱亮亮,叶正寅.充气式机翼的通用设计方法[J].空军工程大学学报:自然科学版,2009,10(5):17-21 Zhu Liangliang,Ye Zhengyin.Research on a universal design method for inflatable wings[J].Journal of Air Force Engineering University:Natural Science Edition,2009,10(5):17-21(in Chinese) [5] Johnathan M R,Suzanne W S.Development of a finite element model of warping inflatable wings .AIAA-2006-1697,2006 [6] 贾青萍.充气式机翼结构设计及性能分析 .北京:北京航空航天大学航空科学与工程学院,2006 Jia Qingping.Structure design and performance analysis of inflatable wings .Beijing:School of Aeronautic Scienee and Engineering,Beijing University of Aeronautics and Astronautics,2006 [7] Simpson A,Usui M,Jacob J,et al.Aeromechanics of inflatable airfoils .AIAA-2004-2233,2004 [8] Simpson A,Smith S W,Jacob J.Aeroelastic behavior of inflatable wings:wind tunnel and flight testing .AIAA-2007-1069,2007 [9] Gaddam P,Hill J,Jacob J D.Aerostructural interaction and optimization of inflatable wings .AIAA-2010-4610,2010 [10] Peter C.Divergence of inflated wing[J].J Aircraft,1999,37(1):953-956 [11] Leyland G Y,Pai P F.Numerical and experimental dynamic characteristics of thin film membranes .AIAA-2004-1618,2004 [12] 方同,薛璞.振动理论及应用[M].西安:西北工业大学出版社,1998:251-258 Fang Tong,Xue Pu.Vibration theory and applications[M].Xi-an:Northwest Industrial University Press,1998:251-258(in Chinese) [13] 江见鲸,何放龙,何益斌,等.有限元法及其应用[M].北京:机械工业出版社,2006:142-144 Jiang Jianjing,He Fanglong,He Yibing,et al.Finite element method and its application[M].Beijing:Mechanism Industry Press,2006:142-144(in Chinese) [14] 诸德超,邢誉峰.工程振动基础[M].北京:北京航空航天大学出版社,2004:73-76 Zhu Dechao,Xing Yufeng.Foundation of engineering vibration[M].Beijing:Beijing University of Aeronautics and Astronautics Press,2004:73-76(in Chinese) [15] 管德.非定常空气动力计算[M].北京:北京航空航天大学出版社,1991:100-141 Guan De.Unsteady aerodynamics compution[M].Beijing:Beijing University of Aeronautics and Astronautics Press,1991:100-141(in Chinese) [16] 陈桂彬,邹丛青,杨超.气动弹性设计基[M].北京:北京航空航天大学出版社,2004:64-74 Chen Guibin,Zou Congqing,Yang Chao.Elements of aeroelastics[M].Beijing:Beijing University of Aeronautics and Astronautics Press,2004:64-74(in Chinese)

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