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TECHNICAL PAPERS

Lund’s Tilting Pad Journal Bearing Pad Assembly Method

[+] Author and Article Information
John C. Nicholas

Rotating Machinery Technology, Inc., 4181 Bolivar Road, Wellsville, NY 14895e-mail: jcn@rmt-inc.com

J. Vib. Acoust 125(4), 448-454 (Oct 08, 2003) (7 pages) doi:10.1115/1.1605767 History: Received June 01, 2003; Online October 08, 2003
Copyright © 2003 by ASME
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References

Lund,  J. W., 1964, “Spring and Damping Coefficients for the Tilting-Pad Journal Bearing,” ASLE Trans., 7, pp. 342–352.
Boyd,  J., and Raimondi,  A. A., 1953, “An Analysis of the Pivoted-Pad Journal Bearing,” Mech. Eng. (Am. Soc. Mech. Eng.), 75(5), pp. 380–386.
Boyd,  J., and Raimondi,  A. A., 1962, “Clearance Considerations in Pivoted Pad Journal Bearings,” ASLE Trans., 5(2), pp. 418–426.
Hagg,  A. C., and Sankey,  G. O., 1958, “Elastic and Damping Properties of Oil-Film Journal Bearings for Applications to Unbalance Vibration Calculations,” ASME J. Appl. Mech., 25(1), pp. 141–143.
Orcutt,  F. K., 1967, “The Steady-State and Dynamic Characteristics of the Tilting-Pad Journal Bearing in Laminar and Turbulent Flow Regimes,” ASME J. Lubr. Technol., 89(3), pp. 392–404.
Elwell,  R. C., and Findlay,  J. A., 1969, “Design of Pivoted-Pad Journal Bearings,” ASME J. Lubr. Technol., 91(1), pp. 87–103.
Castelli,  V., Stevenson,  C. H., and Gunter,  E. J., 1964, “Steady-State Characteristics of Gas-Lubricated, Self-Acting, Partial-Arc Journal Bearings of Finite Width,” ASLE Trans., 7, pp. 153–167.
Nicholas,  J. C., Gunter,  E. J., and Allaire,  P. E., 1979, “Stiffness and Damping Coefficients for the Five Pad Tilting Pad Bearing,” ASLE Trans., 22(2), pp. 112–124.
Allaire,  P. E., Nicholas,  J. C., and Gunter,  E. J., 1977, “Systems of Finite Elements for Finite Bearings,” ASME J. Lubr. Technol., 99(2), pp. 187–197.
Nicholas, J. C., Gunter, E. J., and Barrett, L. E., 1978, “The Influence of Tilting Pad Bearing Characteristics on the Stability of High Speed Rotor-Bearing Systems,” Topics in Fluid Film Bearing and Rotor Bearing System Design and Optimization, an ASME publication, pp. 55–78.
Jones,  G. J., and Martin,  F. A., 1979, “Geometry Effects in Tilting-Pad Journal Bearings,” ASLE Trans., 22(3), pp. 227–244.
Yamauchi, S., and Someya, T., 1977, “Balancing of a Flexible Rotor Supported by Special Tilting-Pad Bearings,” CIMAC Twelfth International Congress on Combustion Engines, Tokyo, Japan.
Shapiro, W., and Colsher, R., 1977, “Dynamic Characteristics of Fluid Film Bearings,” Proceedings of the Sixth Turbomachinery Symposium, Texas A&M University, College Station, Texas, pp. 39–53.
Abdul-Wahed,  M. N., Frene,  J., and Nicolas,  D., 1979, “Analysis of Fitted Partial Arc and Tilting-Pad Journal Bearings,” ASLE Trans., 22(3), pp. 257–266.
Parsell,  J. K., Allaire,  P. E., and Barrett,  L. E., 1983, “Frequency Effects in Tilting-Pad Journal Bearing Dynamic Coefficients,” ASLE Trans., 26, pp. 222–227.
Barrett,  L. E., Allaire,  P. E., and Wilson,  B. W., 1988, “The Eigenvalue Dependence of Reduced Tilting Pad Bearing Stiffness and Damping Coefficients,” ASLE Trans., 31, pp. 411–419.
White,  M. F., and Chan,  S. H., 1992, “The Subsynchronous Dynamic Behavior of Tilting-Pad Journal Bearings,” ASME J. Tribol., 114, pp. 167–173.
Brockett,  T. S., and Barrett,  L. E., 1993, “Exact Dynamic Reduction of Tilting-Pad Bearing Models for Stability Analyses,” STLE Trib. Trans., 36, pp. 581–588.
Wygant, K. D., 2001, “The Influence of Negative Preload and Nonsynchronous Excitation on the Performance of Tilting Pad Journal Bearings,” Ph.D. Dissertation, University of Virginia, Charlottesville, Virginia.
Knight,  J. D., and Barrett,  L. E., 1988, “Analysis of Tilting Pad Journal Bearing With Heat Transfer Effects,” ASME J. Tribol., 110(1), 128–133.
Branagan, L. A., 1988, “Thermal Analysis of Fixed and Tilting Pad Journal Bearings Including Cross-Film Viscosity Variations and Deformation,” Ph.D. dissertation, University of Virginia, Charlottesville, Virginia.
Ettles,  C. M., 1992, “The Analysis of Pivoted Pad Journal Bearing Assemblies Considering Thermoelastic Deformation and Heat Transfer Effects,” STLE Trib. Trans., 35(1), pp. 156–162.
Parkins,  D. W., and Horner,  D., 1993, “Tilting Pad Journal Bearings-Measured and Predicted Stiffness Coefficients,” STLE Trib. Trans., 36(3), pp. 359–366.
Kim,  J., Palazzolo,  A., and Gadangi,  R., 1995, “Dynamic Characteristics of TEHD Tilt Pad Journal Bearing Simulation Including Multiple Mode Pad Flexibility Model,” ASME J. Vibr. Acoust., 117(1), pp. 123–135.
Fillon,  M., Desbordes,  H., Frene,  J., and Wai,  C. C. H., 1996, “A Global Approach of Thermal Effects Including Pad Deformation in Tilting-Pad Journal Bearings Submitted to Unbalance Load,” ASME J. Tribol., 118(1), pp. 169–174.
Nicholas, J. C., and Kirk, R. G., 1979, “Selection and Design of Tilting Pad and Fixed Lobe Journal Bearings for Optimum Turborotor Dynamics,” Proceedings of the Eighth Turbomachinery Symposium, Texas A&M University, College Station, Texas, pp. 43–58.
Nicholas,  J. C., and Kirk,  R. G., 1982, “Four Pad Tilting Pad Bearing Design and Application for Multi-Stage Axial Compressors,” ASME J. Lubr. Technol., 104(4), pp. 523–532.
Nicholas, J. C., 1994, “Tilting Pad Bearing Design,” Proceedings of the Twenty-Third Turbomachinery Symposium, Texas A&M University, College Station, Texas, pp. 179–194.
Gunter, E. J., Barrett, L. E., and Allaire, P. E., 1975, “Design and Application of Squeeze Film Dampers for Turbomachinery Stabilization,” Proceedings of the Fourth Turbomachinery Symposium, Turbomachinery Laboratory, Texas A&M University, College Station, Texas, pp. 127–141.
Lund,  J. W., and Peterson,  L. B., 1987, “The Influence of Pad Flexibility on the Dynamics of a Tilting-Pad Journal Bearing,” ASME J. Tribol., 109(1), pp. 65–70.
Nicholas, J. C., and Wygant, K. D., 1995, “Tilting Pad Journal Bearing Pivot Design for High Load Applications,” Proceedings of the Twenty-Fourth Turbomachinery Symposium, Texas A&M University, College Station, Texas, pp. 33–47.

Figures

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Tilting pad bearing schematic
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Lund’s 5 pad load between pivot data
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Lund’s 5 pad load on pivot data
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Lund’s data vs experimental
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Single pad dynamic data
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Effect of pivot loading, 5 pad bearing
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Jones & Martin vs Nicholas vs Shapiro
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Jones & Martin vs experimental
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Centrifugal compressor instability
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Critical speed map, 11 stage centrifugal compressor
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Stability map, 11 stage centrifugal compressor
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Mode shapes, 11 stage centrifugal compressor
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Frequency dependent data, S=10.0,mb=0.0
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Frequency dependent data, S=1.0,mb=0.3
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Stiffness & damping vs preload & bearing clearance, 4 pad bearing
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Stiffness & damping vs preload & L/D ratio, 4 pad bearing
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Stability performance vs preload & bearing clearance, 2-stage centrifugal compressor

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