Hybrid aeroelastic optimization and antioptimization

Author Type

Faculty

Co-Author Type 1

Faculty

Co-Author Type 2

Outside Researcher

Co-Author Type 3

Outside Researcher

College

Engineering and Computer Science

Department

Ocean and Mechanical Engineering

Document Type

Article

Publication/Event/Conference Title

AIAA Journal

Publication Status

Version of Record

Abstract

A simple aeroelastic structure possessing uncertain elastic modulus, which is modeled as varying either in a convex hull of experimental data points or within an approximating ellipse of minimum area containing ali of the data, is studied. A solution of an antioptimization problem, which is defined as the search for the worst critical velocity under uncertainty constraint is determined. At the second stage, the optimization problem is addressed as an evaluation of the design variables, such that the worst critical velocity is made to exceed a preselected velocity. It appears that, due to the unavoidable presence of uncertainties, realistic aeroelastic problems ought to be posed as a hybrid optimization and as antioptimization procedures. Several numerical results are elucidated to illustrate the ideas. © 2000 by the American Insti-tute of Aeronautics and Astronautics, Inc.

First Page

161

Last Page

165

DOI

10.2514/2.1284

Publication Date

1-1-2001

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