大展弦比柔性机翼的气动弹性分析

谢长川; 吴志刚; 杨超

大展弦比柔性机翼的气动弹性分析

北京航空航天大学航空科学与工程学院, 北京 100083

详细信息

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

中图分类号: V 21147
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出版历程
- 收稿日期: 2003-06-30
- 网络出版日期: 2003-12-31

Aeroelastic analysis of flexible large aspect ratio wing

School of Aeronautics Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 高空长航时飞机普遍具有大展弦比机翼,其气动弹性问题尤为突出.考虑机翼结构的几何非线性对结构刚度的影响和机翼平面变形对非定常气动力的影响,采用准模态的思想进行大变形下的振动工程分析,并利用片条理论计算变形机翼的非定常气动力,然后进行颤振计算.以某型飞机机翼为例的计算表明,随变形幅度增大,机翼的颤振速度有明显的下降.
- 颤振 /
- 气动弹性 /
- 几何非线性 /
- 大展弦比机翼 /
- 非定常气动力
Abstract: Aeroelastic phenomena are significant for high-altitude long-endurance aircrafts for the large aspect ratio wing. The effect of structural geometric-nonlinear on wing dynamic characteristics and the changes of unsteady aerodynamics due to the large static deformation of wing were studied. The wing flutter was carried out based on the result of large deflected wing vibration analysis using quasi-linear method and its unsteady aerodynamics by strip theory. Through the calculation of the wing, it can be concluded that the flutter speed decreases significantly under large deformation.
- flutter /
- aeroelasticity /
- geometric-nonlinear /
- large aspect ratio wing /
- unsteady aerodynamics

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参考文献(1)

[1] 谢长川, 杨超. 大展弦比飞机的几何非线性气弹问题 . 见:第七届全国空气弹性学术交流会论文集 , 2001 Xie Changchuan, Yang Chao. Geometrical nonlinear aeroelastic problems of large aspect ratio wing . In:The 7th national air elasticity proceeding , 2001(in Chinese) [2] Patil M J. Nonlinear aeroelastic analysis, flight dynamics, and control of a complete aircraft . Atlanta:Georgia Institute of Technology, 1999 [3] 谢贻权, 何福保. 弹性和塑性力学中的有限单元法[M]. 北京:机械工业出版社, 1981 Xie Yiquan, He Fubao. Finite element method in elasticity and plasticity[M]. Bejing:China Machine Press, 1981(in Chinese) [4] 伏欣. 气动弹性力学原理[M]. 上海:上海科学技术文献出版社, 1982. 252 Forsching H W. Principle of aeroelasticity[M]. Shanghai:Shanghai Science and Technology Information Press, 1982. 252(in Chinese) [5] 谢长川. 复合材料大展弦比飞机气动弹性研究 . 北京:北京航空航天大学飞行器设计与应用力学系, 2003 Xie Changchuan. Aeroelastic analysis of composite aircraft with high-aspect-ratio . Beijing:Dept. of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, 2003(in Chinese) [6] 管德. 飞机气动弹性力学手册[M]. 北京:航空工业出版社, 1994. 126~134 Guan De. Manual of aircraft aeroelasticity[M]. Beijing:Aviation industry Press, 1994. 126~134(in Chinese) [7] 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 aerodynamic calculation[M]. Beijing:Beijing University of Aeronautics and Astronautics Press, 1991. 100~141(in Chinese)

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