高超声速全动舵面的热气动弹性研究

杨享文; 武洁; 叶坤; 叶正寅

doi:10.6052/0459-1879-13-415

高超声速全动舵面的热气动弹性研究

西北工业大学航空学院, 西安 710072

基金项目: 国家自然科学基金资助项目（91216202）.

详细信息

作者简介:
杨享文，硕士研究生，主要研究方向：高超声速热气动弹性.E-mail：846925586@qq.com

中图分类号: V211.47
计量
- 文章访问数: 1403
- HTML全文浏览量: 82
- PDF下载量: 923
出版历程
- 收稿日期: 2014-02-24
- 修回日期: 2014-04-01
- 刊出日期: 2014-07-17

STUDY ON AEROTHERMOELASTICITY OF A HYPERSONIC ALL-MOVABLE CONTROL SURFACE

School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China

Funds: The project was supported by the National Natural Science Foundation of China (91216202).

摘要

摘要: 根据分层求解原理对考虑舵轴及舵轴与机身间隙影响下的高超声速飞行器全动舵面进行了热气动弹性分析. 采用计算流体力学（CFD）方法求解N-S 方程计算舵面周围的热环境，在该温度分布下根据结构壁面温度计算热流，应用傅里叶（Fourier）定律确定结构热传导过程及其内部温度分布，进而分析结构考虑热应力和温度对材料属性的影响下的模态固有特性，结合基于CFD 技术的当地流活塞理论，在状态空间中对舵面进行了热气动弹性分析. 结果表明，气动加热效应改变了结构的固有频率以及弯扭耦合频率之间的间距，进而改变了结构的颤振速度和颤振频率；随着热传导的进行，结构固有频率和颤振频率先快速减小后基本保持不变，弯扭耦合频率之间的间距和颤振速度则先快速减小后略有上升；舵轴及舵轴与机身间隙的存在对舵面的固有频率、颤振频率、颤振速度都产生了影响，使其最大下降了6%.
- 高超声速流动 /
- 气动加热 /
- 热气动弹性 /
- 当地流活塞理论
Abstract: An aerothermoelastic analysis of a hypersonic all-movable control surface, in which the effects of the axis and the gap were considered, was carried out based on the hierarchical solution process. The CFD (Computational Fluid Dynamics) method was firstly used to solve the N-S (Navier-Stokes) equations and get the thermal environment around the control surface. Then the wall heat flux was calculated based on the surrounding temperature and the wall temperature. The heat conduction was solved using Fourier's law to obtain the structural temperature distribution. In addition, the structural inherent characteristics considering thermal stress and material degradation were analyzed. The unsteady aerodynamic forces were calculated through local flow piston theory based on CFD. Lastly the flutter was analyzed by state space method. The results show that changes of natural frequencies and pitches between the bending frequencies and the torsion frequencies due to the aerodynamic heating result in changes of the flutter speeds and the flutter frequencies; with heat conduction going on, the natural frequencies and the flutter frequencies become unchanged after a rapid decrease, and the pitches increase slowly after a rapid decrease; the natural frequencies and the flutter frequencies as well as the flutter speeds firstly decrease and then increase with time when only thermal stress takes effect; the axis and the gap can lead to decrease in the natural frequencies, the flutter frequencies and the flutter speeds and the maximum reduction reaches to 6%.
- hypersonic flow /
- aerodynamic heating /
- aerothermoelasticity /
- local flow piston theory

HTML全文

参考文献(11)

杨超, 许赟, 谢长川.高超声速气动弹性力学综述. 航空学报, 2010, 31(1): 1-11 (Yang Chao, Xu Yun, Xie Changchuan. Review of studies on aeroelasticity of hypersonic vehicles. Acta Aeronautica et Astronautica Sinica, 2010, 31(1): 1-11 (in Chinese))

Culler AJ, McNamara JJ. Studies on flow-thermal-structural coupling for aerothermoelasticity in hypersonic flow. AIAA Journal, 2010, 48(8): 1721-1738

McNamara JJ. Aeroelastic and aerothermoelastic behavior of two and three dimensional lifting surfaces in hypersonic flow. [PhD Thesis]. Ann Arbor MI, USA: University of Michigan, 2005

McNamara JJ, Friedmann PP. Aeroelastic and aerothermoelastic analysis of hypersonic vehicles: current status and future trends. AIAA Paper, 2007-2013, 2007

McNamara JJ, Culler AJ, Crowell AR. Aerothermoelastic modeling considerations for hypersonic vehicles. AIAA Paper 2009-7397, 2009

史晓鸣, 杨炳渊. 大攻角翼面超声速热颤振分析. 上海航天, 2006, (4): 30-33 (Shi Xiaoming, Yang Bingyuan. Analysis of supersonic thermal-flutter of the wing with high angle of attack. Aerospace Shanghai, 2006, (4): 30-33 (in Chinese))

史晓鸣, 杨炳渊. 气动加热环境下大攻角翼面超音速颤振分析. 强度与环境, 2008, 35(6): 6-13 (Shi Xiaoming, Yang Bingyuan. Analysis of supersonic flutter of the wing with high angle of attack with aerodynamics heating. Structure & Environment Engineering, 2008, 35(6): 6-13 (in Chinese))

吴志刚, 惠俊鹏, 杨超. 高超声速下翼面的热颤振工程分析. 北京航空航天大学学报, 2005, 3(3): 270-273 (Wu Zhigang, Hui Junpeng, Yang Chao. Hypersonic aerothermoelastic analysis of wings. Journal of Beijing University of Aeronautics and Astronautics, 2005, 3(3): 270-273 (in Chinese))

张伟伟, 夏巍, 叶正寅. 一种高超音速热气动弹性数值研究方法. 工程力学, 2006, 23(2): 41-46 (Zhang Weiwei, Xia Wei, Ye Zhengyin. A numerical method for hypersonic aerothermoelasticity. Engineering Mechanics, 2006, 23(2): 41-46 (in Chinese))

Zhang WW, Ye ZY, Zhang CA, et al. Analysis of supersonic aeroelastic problem based on local piston theory method. AIAA Journal, 2009, 47(10): 2321-2328

叶正寅, 张伟伟, 史爱明等. 流固耦合力学基础及其应用. 哈尔滨:哈尔滨工业大学出版社, 2010. 214-215 (Ye Zhengyin, Zhang Weiwei, Shi Aiming, et al. Fundamentals of Fluid-Structure Coupling and its Application. Harbin: Harbin Industry Press, 2010. 214-215 (in Chinese))