Abstract
The aerodynamic and elastic forces may cause an oscillation of the structure such as the high frequency of the airfoil surfaces and the dynamic instability occurring in an aircraft in flight and failure may occur at a speed called flutter speed. In this work, analytical and numerical investigations of flutter limits of thin plates have been carried out. The flutter speed of rectangular plates were obtained and compared with some published results. Different design parameters were investigated such as aspect ratio, thickness and their effects on flutter velocity. It was found that the structural mode shape plays an important role in the determination of the flutter speed and the coupling between the bending and torsional mode is the main cause of flutter.
References
[2] E. Nissim and I. Lotta an optimization method for the " determination of the important flutter modes : J . of Aircraft , Vol. 18 , No. 8 , 1981 .
[3] R.S. Srinivasan and B.J . Baba " Free vibration and flutter of laminated quadrilateral plates " computers and structures , Vol.27 , No. 2 , 1987 .
[4] M. W. Keho " A historical overview of flight flutter testing" NASA , Technical Memorandum 4720 , Oct 1995
[5] Brain Danowsky " Formulation of a complete aaircraft structural variation Model for Robust Flutter prediction , Iowa State University , Feb , 2003
[6] J. Hoas , David , chapra , Inderjit " Flutter of circulation control wings David Research Cneter" , USA , 1989.
[7] M. Sadeghi, S.Yangy, F. Liuz, H. M. Tsaix Parallel computation of wing fiutter with coupled Navier-Stokes KSD Method AIAA 2003.
[8] T. S. Talib " Flutter Speed limits of subsonic wings" . M.Sc Thesis , University of Technology , 2005 .
[9] L.Raymond Bisplinghoff, Hoit Ashley And L.Robert Halfman "Aerolasticity Addision" Wesley publishing company, 1957.
[10]
[11] William Weaver "Finite Elements for Structural Analysis", Printice-Holl Engleod Cliffs, N.J. USA, 1984.
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