A high-efficiency aerothermoelastic analysis method

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• 作者：ZhiQiang Wan (1)
  YaoKun Wang (1)
  YunZhen Liu (1)
  Chao Yang (1)
  
• 关键词：aerothermoelastic ; two ; way coupling ; unified hypersonic lifting surface theory ; piston theory ; flutter
• 刊名：SCIENCE CHINA Physics, Mechanics & Astronomy
• 出版年：2014
• 出版时间：June 2014
• 年：2014
• 卷：57
• 期：6
• 页码：1111-1118
• 全文大小：
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• 作者单位：ZhiQiang Wan (1)
  YaoKun Wang (1)
  YunZhen Liu (1)
  Chao Yang (1)
  
  1. School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191, China
  
• ISSN：1869-1927

文摘

In this paper, a high-efficiency aerothermoelastic analysis method based on unified hypersonic lifting surface theory is established. The method adopts a two-way coupling form that couples the structure, aerodynamic force, and aerodynamic thermo and heat conduction. The aerodynamic force is first calculated based on unified hypersonic lifting surface theory, and then the Eckert reference temperature method is used to solve the temperature field, where the transient heat conduction is solved using Fourier’s law, and the modal method is used for the aeroelastic correction. Finally, flutter is analyzed based on the p-k method. The aerothermoelastic behavior of a typical hypersonic low-aspect ratio wing is then analyzed, and the results indicate the following: (1) the combined effects of the aerodynamic load and thermal load both deform the wing, which would increase if the flexibility, size, and flight time of the hypersonic aircraft increase; (2) the effect of heat accumulation should be noted, and therefore, the trajectory parameters should be considered in the design of hypersonic flight vehicles to avoid hazardous conditions, such as flutter.