Application of Transient Aerodynamics to the Structural Nonlinear Flutter Problem

Author

Lawrence Otto Brase
Walter Eversman, Missouri University of Science and TechnologyFollow

Abstract

A method is presented for the transient, time domain solution of the structural nonlinear flutter problem. Excellent agreement between the linear standard reduced frequency and transient flutter solutions is obtained for both a simplified two-degree-of-freedom system with Theodorsen two-dimensional incompressible unsteady aerodynamics and a multiple-degree-of-freedom system with three-dimensional compressible unsteady aerodynamics. The transient solution is then utilized to develop an approach for precisely including the effects of structural nonlinearities. This approach provides the capability of using the same detailed structural and aerodynamic models for both linear and nonlinear analyses.

Recommended Citation

L. O. Brase and W. Eversman, "Application of Transient Aerodynamics to the Structural Nonlinear Flutter Problem," Journal of Aircraft, vol. 25, no. 11, pp. 1060 - 1068, American Institute of Aeronautics and Astronautics (AIAA), Nov 1988.

The definitive version is available at https://doi.org/10.2514/3.45703

Department(s)

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

0021-8669

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1988 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.

Publication Date

01 Nov 1988