Modal Analysis of Wing Considering Transient Thermal Effects

Abstract:

The severe aerodynamic heating on the surface of modern hypersonic flight vehicle, that can bring high temperature and large temperature gradients in the structure of the vehicle, will be a challenge for the vehicles design and multidisciplinary optimization. The transient thermal environment consists of high temperature and large temperature gradients will generate two important problems related to vehicle structure, namely: 1) the material property, such as elastic modulus, will be degraded at elevated temperature, and 2) the non-uniform thermal stress cased by large temperature gradients will change the stiffness distribution of wing structure, which can make the modal frequencies and shapes of structure changed remarkably. Firstly, the theory and methodology of structure modal analysis in transient thermal environment is outlined. Subsequently, the transient temperature field of structure considering aerodynamic heating is obtained by employing computational technology of aerodynamic heating/structure heat transfer coupling program. Finally, the modal frequencies and shapes of vehicle structure under transient temperature field is calculated based on finite element method (FEM). Based on the analysis and investigation of the simulation results, the influence of the transient thermal environment on structure modal frequency and shape is determined. Furthermore, the investigation of wing structure modal analysis considering aerodynamic heating is an important basis of aerothermoelastic simulation.

• Periodical: Applied Mechanics and Materials (Volumes 444-445)
• Pages: 1400-1406
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.444-445.1400
• Online since: October 2013
• Authors: Hao Liu, Xia Sheng Sun, Xiao Dong Li
• Keywords: Aerodynamic Heating, Reference Temperature (Enthalpy) Method, Thermal Modal Analysis, Thermo-Structure Coupling, Transient Temperature Field

References

[1] Anderson, J.D., Hypersonic and High Temperature Gas Dynamics. 2nd Edition. McGraw-Hill Book Company, NewYork, (1989).

[2] Anderson, J.D., Fundmentals of Aerodynamics. 4th Edition. McGraw-Hill Book Company, NewYork, (2007).

[3] WU Zhenqiang, REN Fang, ZHANG Wei, KONG Fanjin, ZHANG Zhengping. Research Advances in Thermal-Acoustic Testing of Aircraft Structures. Missiles and Space Vehicles, 2010, 306(02), pp.24-30. (in Chinese).

[4] ZHANG Wei, ZHANG Zhenping, LI Haibo, KONG Fanjin, WU Zhenqiang. Progress on Thermal Test Technique of Hypersonic Vehicle Structures. Structure and Environment Engineering, 2011, 38(1), pp.1-8. (in Chinese).

[5] Jack J. M., Adam J. C. and Andrew R. C., Aerothermoelastic Modeling Considerations for Hypersonic Vehicles. AIAA 2009-7397, (2009).

[6] WU Dafang, ZHAO Shougen, YAN Zhenqian. Experimental study on thermal-Vibration test of thermal insulating component for cruise missile. Journal of Aerospace Power, 2009, 27(4), pp.1507-1511. (in Chinese).

[7] Vosteen, L.F., McWithey, R.R. and Thomson, R.G., Effect of Transient Heating on Vibration Frequencies of Some Simple Wing Structures. NACA Technical Note 4054, (1957).

[8] Kehoe, M.W. and Snyder, H.T., Thermoelastic Vibration Test Techniques. NASA Technical Memorandum 101742, (1991).

[9] Spivey, N.D., High-Temperature Modal Survey of a Hot-Structure Control Surface. The 27th International Conference of the Aeronautical Science, Nice, France, (2010).

[10] SHI Xiaoming, YANG Bingyuan. Temperature Field and Mode Analysis of Flate Plate with Thermal Environment of Transient Heating. Computer Aided Engineering, 2006, B09(15), pp.15-18. (in Chinese).

[11] XIA Wei, YANG Zhichun. Vibration Analysis to Composite Panels in Thermal Environment. Chinese Journal of Applied Mechanics, 2005, 22(3), pp.359-363. (in Chinese).

[12] HUANG Shiyong, WANG Zhiyong. The Structure Modal Analysis with Thermal Environment. Missile and Space Vehicle, 2009(5), pp.50-56. (in Chinese).

[13] WANG Honghong, CHEN Huaihai, CUI Xuli, WANG Liang, WU Tehui. Thermal Effect on Dynamic Characteristic of a missile wing. Journal of Vibration Measurement and Diagnosis, 2010, 30(3), pp.275-279. (in Chinese).

[14] YANG Zhibin, YANG Hai, ZHOU Dong. Thermal Mode Analysis of Engine Inlet. Aeronautical Computing Technique, 2011, 41(5), pp.65-71. (in Chinese).

[15] LI Weite, HUANG Baohai, BI Zhongbo. Thermal Stress Analysis and Application. China Electric Power Press, Beijing, 2004. (in Chinese).