Improved Mu Method with Mixed Perturbation to Dynamic Pressure

Ying Song Gu; Zhi Chun Yang

doi:10.4028/www.scientific.net/AMM.101-102.606

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 101-102Improved Mu Method with Mixed Perturbation to...

Improved Mu Method with Mixed Perturbation to Dynamic Pressure

Abstract:

Mu method is a flutter solution technique based on frequency domain mu-analysis, which directly applies perturbation to dynamic pressure in aeroelastic equation of motion. In a previous study, the dynamic pressure perturbation was modeled as a purely real uncertainty, which could not guarantee the continuity of mu. To improve the continuity of mu, a small amount of complex perturbation is added to the dynamic pressure in addition to the real perturbation. Thus the mu method is improved with this mixed real/complex perturbation. Formulations and algorithm of the improved method are presented and validated with sample test cases. It is demonstrated that the improved mu method is more feasible and conservative than the original mu method due to the mixed perturbation.

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Periodical:

Applied Mechanics and Materials (Volumes 101-102)

Pages:

606-609

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.101-102.606

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Online since:

September 2011

Authors:

Ying Song Gu, Zhi Chun Yang

Keywords:

Flutter (Aerodynamics), Frequency Domain, Mixed Perturbation, Mu Method

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References

[1] R. Lind and M. Brenner: Robust Aeroservoelastic Stability Analysis (Springer-Verlag, London 1999).

Google Scholar

[2] Y.S. Gu, Z.C. Yang, W. Wang and W. Xia: 50th AIAA SDM Conference, AIAA-2009-2312.

Google Scholar

[3] A. Packard and P. Pandey: IEEE Trans. on Automatic Control Vol. 38(1993), No. 3, pp.415-428.

Google Scholar

[4] G.J. Balas, J.C. Doyle, K. Glover, A. Packard and R. Smith: μ-Analysis and Synthesis Toolbox User's Guide (MUSYN Inc. and The Mathworks Inc. 2001).

Google Scholar

[5] W.P. Rodden and E.H. Johnson: MSC/NASTRAN Aeroelastic Analysis User's Guide Ver. 68 (MacNeal-Schwendler, LosAngeles CA 1994).

Google Scholar