Nonlinear flutter of composite panels under yawed supersonic flow using finite elements

AIAA Journal ◽  
1999 ◽  
Vol 37 ◽  
pp. 1025-1032
Author(s):  
K. Abdel-Motaglay ◽  
R. Chen ◽  
C. Mei
Keyword(s):  
Supersonic Flow ◽  
Finite Elements ◽  
Composite Panels ◽  
Nonlinear Flutter

Nonlinear Flutter of Composite Panels Under Yawed Supersonic Flow Using Finite Elements

AIAA Journal ◽  
10.2514/2.818 ◽  
1999 ◽  
Vol 37 (9) ◽  
pp. 1025-1032 ◽  
Author(s):  
K. Abdel-Motaglay ◽  
R. Chen ◽  
C. Mei
Keyword(s):  
Supersonic Flow ◽  
Finite Elements ◽  
Composite Panels ◽  
Nonlinear Flutter

Nonlinear flutter analysis of composite panels

2018 ◽  
Vol 32 (12n13) ◽  
pp. 1840043
Author(s):  
Xiaomin An ◽  
Yan Wang
Keyword(s):  
Dynamic Pressure ◽  
Composite Panel ◽  
Composite Panels ◽  
Nonlinear Finite Element Method ◽  
Nonlinear Flutter ◽  
Unsteady Aerodynamic ◽  
Flutter Analysis ◽  
Time Marching ◽  
Coupled Solution ◽  
Nonlinear Panel Flutter

Nonlinear panel flutter is an interesting subject of fluid–structure interaction. In this paper, nonlinear flutter characteristics of curved composite panels are studied in very low supersonic flow. The composite panel with geometric nonlinearity is modeled by a nonlinear finite element method; and the responses are computed by the nonlinear Newmark algorithm. An unsteady aerodynamic solver, which contains a flux splitting scheme and dual time marching technology, is employed in calculating the unsteady pressure of the motion of the panel. Based on a half-step staggered coupled solution, the aeroelastic responses of two composite panels with different radius of R = 5 and R = 2.5 are computed and compared with each other at different dynamic pressure for Ma = 1.05. The nonlinear flutter characteristics comprising limited cycle oscillations and chaos are analyzed and discussed.

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