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On the optimization of discrete structures with aeroelastic constraintsThe paper deals with the problem of dynamic structural optimization where constraints relating to flutter of a wing (or other dynamic aeroelastic performance) are imposed along with conditions of a more conventional nature such as those relating to stress under load, deflection, minimum dimensions of structural elements, etc. The discussion is limited to a flutter problem for a linear system with a finite number of degrees of freedom and a single constraint involving aeroelastic stability, and the structure motion is assumed to be a simple harmonic time function. Three search schemes are applied to the minimum-weight redesign of a particular wing: the first scheme relies on the method of feasible directions, while the other two are derived from necessary conditions for a local optimum so that they can be referred to as optimality-criteria schemes. The results suggest that a heuristic redesign algorithm involving an optimality criterion may be best suited for treating multiple constraints with large numbers of design variables.
Document ID
19780055226
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mcintosh, S. C., Jr.
(Nielsen Engineering and Research, Inc. Mountain View, Calif., United States)
Ashley, H.
(Stanford University Stanford, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
May 1, 1978
Publication Information
Publication: Computers and Structures
Volume: 8
Subject Category
Structural Mechanics
Accession Number
78A39135
Funding Number(s)
CONTRACT_GRANT: F49620-77-C-0055
CONTRACT_GRANT: NGL-05-020-243
Distribution Limits
Public
Copyright
Other

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