Flutter Speed Limits of Cantilever Rectangular and Tapered Plates
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.
Downloads
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.
Downloads
Published
Issue
Section
License
Copyright: Open Access authors retain the copyrights of their papers, and all open access articles are distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided that the original work is properly cited. The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations. While the advice and information in this journal are believed to be true and accurate on the date of its going to press, neither the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.
