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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Identification of the Modal Parameters of a Flexibly Supported Rigid Casing

[+] Author and Article Information
N. Feng, E. J. Hahn

School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney NSW 2052 Australiae-mail: e.hahn@unsw.edu.au

J. Eng. Gas Turbines Power 125(1), 184-192 (Dec 27, 2002) (9 pages) doi:10.1115/1.1519265 History: Received November 01, 2000; Revised May 01, 2002; Online December 27, 2002
Copyright © 2003 by ASME
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References

Cottin,  N., Felgenhauer,  H. P., and Natke,  H. G., 1984, “On the Parameter Identification of Elastomechanical Systems Using Input and Output Residuals,” Arch. Appl. Mech., 54(5), pp. 378–387.
Leuridan, J. M., Brown, D. L., and Allenmang, R. J., 1983, “Direct System Parameter Identification of Mechanical Structures With Application to Modal Analysis,” 8th International Seminar on Modal Analysis, Katholieke Universiteit Leuven, Leuven, pp. 201–208.
Lees, A. W., 1988, “The Least Square Method Applied to Identify Rotor/Foundation Parameters,” Proc. Intl Conference on Vibrations in Rotating Machinery, IMechE, Edinburgh, IMechE, London, pp. 209–215.
Cheli, F., Dedini, F. G., and Vania, A., 1992, “Supporting Structure Effect on Rotating Machinery Vibration,” Proc. Intl Conference on Vibrations in Rotating Machinery, IMechE, Bath, IMechE, London, pp. 543–548.
Feng,  N. S., and Hahn,  E. J., 1995, “Including Foundation Effects on the Vibration Behavior of Rotating Machinery,” Mech. Syst. Signal Process., 9(3), pp. 243–256.
Feng, N. S., and Hahn, E. J., 1996, “Experimental Identification of the Foundation Dynamic Stiffness Parameters of Rotor-Bearing-Foundation Systems,” Proceedings of the 6th International Symposium on Transport Phenomenon and Dynamics of Rotating Machinery, Honolulu, Pacific Center of Thermal-Fluids Engineering, Honolulu, HI, 1 , pp. 48–57.
Feng, N. S., and Hahn, E. J., 1996, “Turbomachinery Foundation Identification Using Foundation Modal Parameters,” Proceedings ISMA-21 Noise and Vibration Engineering Conference, III , Katholieke Universiteit Leuven, Leuven, pp. 1503–1513.
IMSL, 1995, STAT/LIBRARY, IMSL Inc., Version 3.0.
Meriam, J. L., 1975, Dynamics, SI Version, 2nd Ed., John Wiley and Sons, New York.

Figures

Grahic Jump Location
Location of the seven degrees-of-freedom
Grahic Jump Location
Unbalance distribution No. 1
Grahic Jump Location
Rigid-body modes of block
Grahic Jump Location
Location of the 11 degrees-of-freedom
Grahic Jump Location
Location of the measurement points
Grahic Jump Location
Unsymmetrically supported casing
Grahic Jump Location
Unbalance responses for unbalance distribution No. 1
Grahic Jump Location
Unbalance responses for unbalance distribution No. 2
Grahic Jump Location
Unbalance distribution No. 2

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