A novel semi-analytical formulation is presented for the linearized dynamic analysis of spiral-grooved mechanical gas face seals. The linearized rotordynamic properties of the gas film are numerically computed and then represented analytically by a constitutive model consisting of a cosine modified Prony series. The cosine modification enables the Prony series to characterize the gas film properties of face seals in applications with large compressibility numbers. The gas film correspondence principle is then employed to couple the constitutive model to the dynamics of the mechanical face seal. Closed-form solutions are presented for the transient natural response to initial velocity conditions, the steady-state response to rotor runout and initial stator misalignment, the transmissibility ratios, and the stability threshold. Results from the closed-form solutions are all within a few percent of the results from a full nonlinear numerical simulation.
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April 2003
Technical Papers
Semi-Analytical Dynamic Analysis of Spiral-Grooved Mechanical Gas Face Seals
Brad A. Miller,
Brad A. Miller
Department of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri-Rolla, 1870 Miner Circle, Rolla, MO 65409-0050
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Itzhak Green
Itzhak Green
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
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Brad A. Miller
Department of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri-Rolla, 1870 Miner Circle, Rolla, MO 65409-0050
Itzhak Green
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405
Contributed by the Tribology Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for presentation at the ASME/STLE Tribology Conference, Cancun, Mexico October 27–30, 2002. Manuscript received by the Tribology Division April 16, 2002; revised manuscript received July 25, 2002. Associated Editor: J. A. Tichy.
J. Tribol. Apr 2003, 125(2): 403-413 (11 pages)
Published Online: March 19, 2003
Article history
Received:
April 16, 2002
Revised:
July 25, 2002
Online:
March 19, 2003
Citation
Miller, B. A., and Green, I. (March 19, 2003). "Semi-Analytical Dynamic Analysis of Spiral-Grooved Mechanical Gas Face Seals ." ASME. J. Tribol. April 2003; 125(2): 403–413. https://doi.org/10.1115/1.1510876
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