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TECHNICAL PAPERS

A Dynamic Model of a Contacting Mechanical Seal for Down-Hole Tools

[+] Author and Article Information
Shunhe Xiong, Richard F. Salant

George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405

J. Tribol 125(2), 391-402 (Mar 19, 2003) (12 pages) doi:10.1115/1.1501085 History: Received February 05, 2002; Revised June 12, 2002; Online March 19, 2003
Copyright © 2003 by ASME
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References

Xiong,  S., and Salant,  R. F., 2000, “A Numerical Model of a Rock Bit Bearing Seal,” STLE Tribol. Trans., 43, pp. 542–548.
Xiong,  S., and Salant,  R. F., 2002, “A Non-Axisymmetric Steady State Model of a Mechanical Seal for Down-Hole Tools,” ASME J. Tribol., 124, pp. 144–150.
Rowles, R. T., and Nau, B. S., 1978, “An Assessment of Factors Affecting the Response of Mechanical Seals to Shaft Vibration,” 8th International Conference on Fluid Sealing, BHRA, Durham, pp. 29–40.
Etsion,  I., 1981, “Dynamic Response to Rotating-Seat Runout in Noncontacting Face Seals,” ASME J. Lubr. Technol., 103, pp. 587–592.
Etsion,  I., and Dan,  Y., 1981, “An Analysis of Mechanical Face Seal Vibration,” ASME J. Tribol., 103, pp. 428–435.
Metcalfe,  R., 1981, “Dynamic Tracking of Angular Misalignment in Liquid-Lubricated End-Face Seals,” ASLE Trans., 24, pp. 509–516.
Etsion,  I., 1982, “Dynamic Analysis of Noncontacting Face Seals,” ASME J. Lubr. Technol., 104, pp. 460–468.
Metcalfe,  R., 1982, “Dynamic Whirl in Well-Aligned, Liquid-Lubricated End-Face Seals with Hydrostatic Tilt Instability,” ASLE Trans., 25, pp. 1–6.
Tournerie,  B., and Frene,  J., 1984, “Computer Modelling of the Functioning Modes of Non-Contacting Face Seals,” Tribol. Int., 17, pp. 269–276.
Green,  I., and Etsion,  I., 1985, “Stability Threshold and Steady State Response of Noncontacting Coned Face Seals,” ASLE Trans., 28, pp. 449–460.
Green,  I., and Etsion,  I., 1986, “Nonlinear Dynamic Analysis of Noncontacting Coned-Face Mechanical Seals,” ASLE Trans., 29, pp. 383–393.
Person, V., Tournerie, B., and Frene, J., 1996, “Numerical Study of the Stable Dynamic Behavior of Radial Face Seals with Grooved Faces,” Paper No. 96-TRIB-40.
Hart, F. D., and Zorowski, C. F., 1965, “Onset of Mechanical Separation in Bellows Supported Rotary Face Seals,” Paper No. 65-GTP-4.
Hart,  F. D., and Zorowski,  C. F., 1967, “Dynamic Coupling Effects in Rotary Face Seal Separation Phenomena,” ASME J. Eng. Ind., 89, pp. 296–300.
Zorowski,  C. F., and Hill,  H. H., 1971, “Post Mechanical Separation in Elastically Supported Rotary Face Seals,” ASLE Trans., 14, pp. 75–80.
Lipschitz,  A., 1987, “Dynamic Stability Threshold of Contacting Mechanical Seals,” ASLE Trans., 30, pp. 328–338.
Green,  I., 1990, “Separation Speed of Undamped Metal Bellows Contacting Mechanical Face Seals,” STLE Tribol. Trans., 33, pp. 171–178.
Green,  I., and Bair,  S., 1991, “Dynamic Response to Axial Oscillation and Rotating Seat Runout in Contacting Mechanical Face Seals,” STLE Tribol. Trans., 34, pp. 169–176.
Meriam, J. L., and Kraige, L. G., 1997, Engineering Mechanics, 2 , John Wiley & Sons, Inc., New York.
Green,  I., and Etsion,  I., 1986, “A Kinematic Model for Mechanical Seals With Antirotation Locks or Positive Drive Devices,” ASME J. Tribol., 108, pp. 42–45.
Payvar,  P., and Salant,  R. F., 1992, “A Computational Method for Cavitation in a Wavy Mechanical Seal,” ASME J. Tribol., 114, pp. 199–204.
Patir,  N., and Cheng,  H. S., 1978, “An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication,” ASME J. Lubr. Technol., 100, pp. 12–17.
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Lebeck, A. O., 1991, Principles and Design of Mechanical Face Seals, John Wiley & Sons, Inc., New York.

Figures

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Schematic of mechanical seal for down-hole tools
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Orientation of seal faces
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Computational procedure, transient model
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Translation in Z-direction, transient model
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Rotation about X-axis, transient model
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Rotation about Y-axis, transient model
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Leakage rate, transient model
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Inflow (incursion) rate, transient model
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Orientation of seal faces, dynamic tracking model
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Computational procedure, dynamic tracking model
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Misalignment of non-rotating face versus runout, dynamic tracking model
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Relative misalignment versus runout, dynamic tracking model
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Cavitation ratio versus runout, dynamic tracking model
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Leakage rate versus runout, dynamic tracking model
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Inflow (incursion) rate versus runout, dynamic tracking model
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Maximum contact pressure versus runout, dynamic tracking model
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(a) Film thickness distribution, γr=5.0×10−7 radians, dynamic tracking model; (b) fluid pressure distribution, γr=5.0×10−7 radians, dynamic tracking model; and (c) contact pressure distribution, γr=5.0×10−7 radians, dynamic tracking model
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(a) Film thickness distribution, γr=2.0×10−5 radians, dynamic tracking model; (b) fluid pressure distribution, γr=2.0×10−5 radians, dynamic tracking model; and (c) contact pressure distribution, γr=2.0×10−5 radians, dynamic tracking model
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(a) Film thickness distribution, γr=2.0×10−4 radians, dynamic tracking model; (b) fluid pressure distribution, γr=2.0×10−4 radians, dynamic tracking model; and (c) contact pressure distribution, γr=2.0×10−4 radians, dynamic tracking model

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