Volume 27 Issue 9
Sep.  2012
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WANG Yi-feng, SHAO Song, ZHU Qing-hua, ZHANG Cheng-lin. Flutter analysis of a two-dimensional wing with aerodynamic and structural nonlinearity[J]. Journal of Aerospace Power, 2012, 27(9): 2063-2074.
Citation: WANG Yi-feng, SHAO Song, ZHU Qing-hua, ZHANG Cheng-lin. Flutter analysis of a two-dimensional wing with aerodynamic and structural nonlinearity[J]. Journal of Aerospace Power, 2012, 27(9): 2063-2074.

Flutter analysis of a two-dimensional wing with aerodynamic and structural nonlinearity

  • Received Date: 2011-12-09
  • Publish Date: 2012-09-28
  • The unsteady and dynamic stall aerodynamic behavior of airfoil at low Mach number was investigated,and the modified Leishman-Beddoes (L-B) model was modeled from the viewpoint of the convection of the flow on the airfoil surface.Based on the modified L-B model,the flutter analysis model of a two-dimensional wing with aerodynamic and structural nonlinearity at low Mach number was presented.The modification to L-B is effective by comparing with experimental airfoil airload results,and the wing flutter experimental results also verify the analysis model of the two-dimensional wing aeroelastic system.Results demonstrates that the stall flutter of airfoil aeroelastic system is closely related to the initial pitch angle and the inflow velocity,and the quasi-periodical oscillation motion of the two-dimensional wing aeroelastic system mainly caused by the coupled cubic nonlinear stiffness in pitch and plunge.

     

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