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《Journal of Shenyang Aerospace University》 2014-01
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Nonlinear thermal flutter features of heated panels in supersonic air flow

WANG Guang-sheng;YANG Xiao-dong;Faculty of Aerospace Engineering,Shenyang Aerospace University;School of Mechanical and Electrical Engineering,Beijing University of Technology;  
Panel thermal flutter has become the research focus both at home and abroad with the rapid development of high-speed craft technology. Panel thermal flutter has a great influence on vehicle performance, and even affects the flight safety. The nonlinear flutter analysis of panel with thermal effect is carried out. Based on the Kirchhoff thin plate theory and the Von Karman's nonlinear large deformation strain-displacement relations,the dynamic equations of the flat panel are established. The paper takes the point at x = 0. 25 as an example to draw its first three curved configuration static bifurcation diagrams,and the buckling configuration of panel of different axial load conditions is analyzed. As the difference in temperature is an important factor affecting the thermal stress,the paper compares the elastic deformation of different temperature conditions,and results show that the greater the temperature difference is,the greater displacement of the panel deviation from the static equilibrium position will be.
【Fund】: 国家自然科学基金(项目编号:11172010 10702045)
【CateGory Index】: V215.34
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