0
TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Comparison of Rotordynamic Analysis Predictions With the Test Response of Simple Gas Hybrid Bearings for Oil Free Turbomachinery

[+] Author and Article Information
Deborah A. Osborne

Honeywell International, Aerospace/Engineering & Technology, 2525 W. 190th Street, Torrance, CA 90504-6099e-mail: deborah.osborne@honeywell.com

Luis San Andrés

Mechanical Engineering Department, Texas A&M University, College Station, TX 77843-3123e-mail: lsanandres@mengr.tamu.edu

J. Eng. Gas Turbines Power 128(3), 634-643 (Jun 13, 2006) (10 pages) doi:10.1115/1.1839923 History: Received October 01, 2002; Revised March 01, 2003; Online June 13, 2006
Copyright © 2006 by ASME
Your Session has timed out. Please sign back in to continue.

References

San Andrés,  L., and Vance,  J., 2001, “Feasibility Study on Alternative Oil-Less Bearing Technologies for Automotive Turbochargers,” Final Research Progress Report, Texas A&M University, College Station, TX.
Fuller,  D. D., 1969, “A Review of the State-of-the-Art for the Design of Self-Acting Gas-Lubricated Bearings,” J. Lubr. Technol., 91, pp. 1–16.
Elrod,  H. G., and Malanoski,  S. B., 1960, “Theory and Design Data for Continuous-Film, Self-Acting Journal Bearings of Finite Length,” Franklin Institute Laboratories for Research and Development, Report I-A 2049-13.
Raimondi,  A. A., 1961, “A Numerical Solution for the Gas-Lubricated Full Journal Bearing of Finite Length,” ASLE Trans., 4, pp. 131–155, Paper No. 60 LC-14.
Castelli,  V., and Elrod,  H. G., 1965, “Solution of the Stability Problem for 360° Self-Acting, Gas-Lubricated Bearings,” J. Basic Eng., 87, pp. 199–212.
Castelli, V., and Vohr, J. H., 1967, “Performance Characteristics of Herringbone-Grooved Journal Bearings Operating at High Eccentricity Ratios With Misalignment,” Proc. Gas Bearing Symposium, University of Southampton, Southampton, UK, Paper No. 14.
Elrod,  H. G., McCabe,  J. T., and Chu,  T. Y., 1967, “Determination of Gas-Bearing Stability Response to a Step-Jump,” ASME J. Lubr. Technol., 89, pp. 493–498.
Czolczynski,  K., 1996, “How to Obtain Stiffness and Damping Coefficients of Gas Bearings,” Wear, 201, pp. 265–275.
Faria, M. T. C., 1999, “Finite Element Method of High Speed Grooved Gas Bearings,” Ph.D. dissertation, Texas A&M University, College Station, TX.
Faria,  M. T. C., and San Andrés,  L., 2000, “On the Numerical Modeling of High-Speed Hydrodynamic Gas Bearings,” ASME J. Tribol., 122, pp. 124–130.
Faria,  M. T. C., 2001, “An Efficient Finite Element Procedure for Analysis of High-Speed Spiral Groove Gas Face Seals,” ASME J. Tribol., 123, pp. 205–210.
Shapiro,  W., 1969, “Steady-State and Dynamic Analyses of Gas-Lubricated Hybrid Journal Bearings,” J. Lubr. Technol., 91, pp. 171–180.
Lund,  J. W., 1964, “The Hydrostatic Gas Journal Bearing With Journal Rotation and Vibration,” J. Basic Eng., 86, pp. 328–336.
Lund,  J. W., 1967, “A Theoretical Analysis of Whirl Instability and Pneumatic Hammer for a Rigid Rotor in Pressurized Gas Journal Bearings,” ASME J. Lubr. Technol., 89, pp. 154–166.
Piekos,  E. S., and Breuer,  K. S., 1999, “Pseudospectral Orbit Simulation of Nonideal Gas-Lubricated Journal Bearings for Microfabricated Turbomachines,” ASME J. Tribol., 121, pp. 604–609.
Piekos, E. S., 2000, “Numerical Simulation of Gas-Lubricated Journal Bearings for Microfabricated Machines,” Ph.D. thesis, Massachusetts Institute of Technology, Cambridge, MA.
San Andrés,  L., and Wilde,  D. A., 2001, “Finite Element Analysis of Gas Bearings for Oil-Free Turbomachinery,” Revue Européenne des Eléments Finis,10, pp. 769–790.
Wilde, D. A., and San Andrés, L., 2003, “Experimental Response of Simple Gas Hybrid Bearings for Oil-Free Turbomachinery,” ASME Paper No. GT 2003-38833.
Wilde, D. A., 2002, “Experimental Response of Gas Hybrid Bearings for High Speed Oil-Free Turbomachinery,” Masters thesis, Texas A&M University, College Station, TX.
XLTRC2 , 2000, Computational Rotordynamics Software Suite, Turbomachinery Laboratory, Texas A&M University, College Station, TX.

Figures

Grahic Jump Location
Schematic view of test three lobe hybrid gas bearing
Grahic Jump Location
Geometry of feed orifice in gas hybrid bearing
Grahic Jump Location
Empirical loss coefficient versus supply pressure at feed orifice curtain area
Grahic Jump Location
Predicted journal eccentricity and attitude angle versus rotor speed with feed pressure ratio increasing
Grahic Jump Location
Predicted gas bearing direct stiffnesses (Kxx=Kyy) versus frequency ratio for feed pressure ratio=5.08 and three rotor speeds
Grahic Jump Location
Predicted gas bearing cross-coupled stiffnesses (Kxy=Kyx) versus frequency ratio for feed pressure ratio=5.08 and three rotor speeds
Grahic Jump Location
Predicted gas bearing direct damping coefficients (Cxx=Cyy) versus frequency ratio for feed pressure ratio=5.08 and three rotor speeds
Grahic Jump Location
Predicted gas bearing cross-coupled damping coefficient (Cyx=Cxy) versus frequency ratio for feed pressure ratio=5.08 and three rotor speeds
Grahic Jump Location
Geometric model of test rotor
Grahic Jump Location
Measured and predicted first free-free mode shape of test rotor
Grahic Jump Location
Measured and predicted second free-free mode shape of test rotor
Grahic Jump Location
Predicted (peak-to-peak) imbalance response for rotor supported on gas bearings for synchronous bearing force coefficients and increasing supply pressure ratios
Grahic Jump Location
Measured and predicted critical speeds for rotor supported on gas bearings (supply pressure ratio varies)
Grahic Jump Location
Experimental damping ratios from synchronous rotor response and predicted (conical and cylindrical modes) damping ratios for rotor supported on gas bearings

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In