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Vibration analyses of an equivalent plate wing with an external store

Published online by Cambridge University Press:  27 January 2016

Y.-H. Na ,
J.-H. Kim  and
S.-J. Shin
Y.-H. Na
Affiliation:
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea
J.-H. Kim
Affiliation:
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Korea
S.-J. Shin*
Affiliation:
Institute of Advanced Aerospace Technology, Seoul National University, Seoul, Korea
*
[email protected]
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Extract

Generally, pylon-mounted external stores significantly affect the aerodynamic characteristics of the aircraft due to their flexibility. Therefore, many investigations upon the dynamic and aeroelastic characteristics of an aircraft wing with external stores have been done over the last few decades Recently, a study was carried out regarding the aeroelastic effects on wings by the engine placement For severe operation conditions, classical linear theory with a small amount of amplitude vibration may not be an appropriate analysis. Nonlinear vibration analysis will be required, especially when the amplitude of the vibration is larger than the wing thickness. Chia performed static, dynamic, and post-buckling analyses of various isotropic and composite plates for that purpose. Dumir and Bhaskar derived finite element formulations to analyse the nonlinear vibration of beams and plates. Moreover, the variational-asymptotic plate formulation and the accompanying equations for the global analysis for the plates have been studied. That approach accounted every possible geometrical non-linearity associated with large displacement and small strain.

Type
Research Article
Information
The Aeronautical Journal , Volume 118 , Issue 1207 , September 2014 , pp. 1090 - 1098
Copyright
Copyright © Royal Aeronautical Society 2014 

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