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A hybrid state vector approach to aeroelastic analysis with application to composite lifting surfacesA computational technique has been developed for performing preliminary design aeroelastic analyses of large aspect ratio lifting surfaces. This technique, applicable to both fixed and rotating wing configurations, is based upon a formulation of the structural equilibrium equations in terms of a hybrid state vector containing generalized force and displacement variables. An integrating matrix is employed to solve these equations for divergence and flutter eigenvalues and steady aeroelastic deformation. Results are presented for simple examples which verify the technique and demonstrate how it can be applied to analyze lifting surfaces, including those constructed from composite materials.
Document ID
19810045108
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Lehman, L. L.
(Stanford University Stanford, Calif., United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1981
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 81-0626
Meeting Information
Meeting: Conference on Structures, Structural Dynamics and Materials
Location: Atlanta, GA
Start Date: April 6, 1981
End Date: April 8, 1981
Accession Number
81A29512
Funding Number(s)
CONTRACT_GRANT: NGL-05-020-243
CONTRACT_GRANT: AF-AFOSR-77-3263
Distribution Limits
Public
Copyright
Other

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