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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Recent Developments in Turbomachinery Modeling for Improved Balancing and Vibration Response Analysis

[+] Author and Article Information
Peter Y. P. Chen, Ningsheng Feng, Eric J. Hahn, Wenlong Hu

School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney NSW 2052, Australia

J. Eng. Gas Turbines Power 127(3), 646-653 (Jun 24, 2005) (8 pages) doi:10.1115/1.1850942 History: Received October 01, 2003; Revised March 01, 2004; Online June 24, 2005
Copyright © 2005 by ASME
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References

Lund,  J. W., and Tonnesen,  J., 1972, “Analysis and Experiments on Multi-Plane Balancing of a Flexible Rotor,” ASME J. Eng. Ind., 94, pp. 233–242.
Feng,  N. S., and Hahn,  E. J., 1996, “Using Vibration Analysis Software to Balance Turbomachinery,” Mech. Eng. Trans., IEAust,21, pp. 147–155.
Chen, P. Y. P., Feng, N. S., and Hahn, E. J., 2001, “Flexible Rotor Balancing Taking Bearing Non-Linearity Into Account,” ASME Paper No. DETC2001/VIB-21380.
Hori,  Y., and Uematsu,  R., 1980, “Influence of Misalignment of Support Journal Bearings on Stability of a Multi-Rotor System,” Tribol. Int., 13, pp. 249–252.
Feng,  N. S., and Hahn,  E. J., 1998, “Vibration Analysis of Statically Indeterminate Rotors With Hydrodynamic Bearings,” ASME J. Tribol., 120, pp. 781–788.
Krodkiewski,  J. M., and Ding,  J., 1993, “Theory and Experiment on a Method for On-Site Identification of Configurations of Multi-Bearing Rotor Systems,” J. Sound Vib., 164, pp. 281–293.
Hu,  W., Feng,  N. S., and Hahn,  E. J., 2004, “A Comparison of Techniques for Identifying the Configuration State of Statically Indeterminate Rotor Bearing Systems,” Tribol. Int., 37, pp. 149–157.
Lees, A. W., Friswell, M. I., Smart, M. G., and Prells, U., 1998, “The Identification of Foundation Vibration Parameters From Running Machine Data,” Proc. of 7th Int. Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, pp. 715–724.
Diana, G., Cheli, F., and Vania, A., 1988, “A Method to Identify the Foundation Modal Parameters Through Measurements of the Rotor Vibrations,” Proc. 4th Int. Conference on Vibrations in Rotating Machinery, IMechE, Edinburgh, pp. 217–222.
Vazquez, J. A., and Barret, L. V., 1996, “Representing Flexible Support by Polynomial Transfer Functions,” ASME Paper No. 96-GT-27.
Smart,  M., Friswell,  M. I., Lees,  A. W., and Prells,  U., 1998, “Estimating Turbogenerator Foundation Parameters,” Proc. Inst. Mech. Eng., Part C: J. Mech. Eng. Sci., 22, pp. 653–665.
Feng, N. S., and Hahn, E. J., 2001, “Identification of Pedestal Parameters in Rotor Bearing Systems Using Known Unbalance,” ASME Paper No. DETC2001/VIB-21553.
Feng, N. S., and Hahn, E. J., 1998, “On the Use of Linearised Hydrodynamic Bearing Force Coefficients for Foundation Identification Purposes,” Proc. of 5th Int. Tribology Conference, AUSTRIB ’98, Brisbane, pp. 383–387.
Feng, N. S., and Hahn, E. J., 2000, “Experimental Evaluation of Linear and Non-Linear Pedestal Identification,” Proc. of ISMA25, Noise and Vibration Engineering Conference, Leuven, pp. 877–883.
Pham, D., Feng, N. S., and Hahn, E. J., 2003, “The Effect of the Lubricant Supply Situation on the Vibration Behavior of Rotor Bearing Systems,” Proc. of 10th Int. Congress on Sound and Vibration, Stockholm, pp. 3597–3604.
Chen, P. Y. P., Feng, N. S., and Hahn, E. J., 2002, “On the Balancing of Non-Linear Rotor Bearing Foundation Systems,” Proc. of 9th Int. Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu.
Feng,  N. S., and Hahn,  E. J., 1995, “Including Foundation Effects on the Vibration Behavior of Rotating Machinery,” Mech. Syst. Signal Process., 9, pp. 243–256.
Hu, W., 2004, “On Identifying the Configuration State of Rotor-Bearing-Pedestal Systems,” Ph.D. thesis, UNSW.
Hahn,  E. J., and Chen,  P. Y. P., 1994, “Harmonic Balance Analysis of General Squeeze Film Damped Multi-Degree-of-Freedom Rotor Bearing Systems,” ASME J. Tribol., 116, pp. 499–507.
Miah, H., 2002, “An Experimental Rig to Study Lateral Misalignment Effects in Rotor Bearing Pedestal Systems,” M.E. thesis, UNSW.

Figures

Grahic Jump Location
Schematic of a general RBFS
Grahic Jump Location
Location of the bearing centers with respect to the deformed rotor centreline
Grahic Jump Location
Schematic of RBFS used for numerical experiments on foundation identification
Grahic Jump Location
Schematic of RBFS used for numerical experiments on unbalance state identification (disk masses from left to right are 20, 40, and 30 kg, respectively)
Grahic Jump Location
Schematic of RBFS used for numerical experiments on configuration state identification
Grahic Jump Location
Experimental RBFS rig for identifying the configuration state

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