Previous numerical simulations and experimental observations have shown that the meniscus in a rotary lip seal will be ingested into the sealing zone when the shaft speed exceeds a critical value. The present numerical analysis shows that once the meniscus is ingested, multiple equilibrium operating points exist, so the steady-state operating characteristics of the seal will depend on the history of the seal as well as on the steady-state operating conditions and seal properties. The analysis also shows that if the meniscus moves too close to the liquid-side of the seal, asperity contact between the lip and the shaft will occur.
Issue Section:
Research Papers
1.
Briggs, W. L., 1987, A Multigrid Tutorial, SIAM, Philadelphia, PA.
2.
Horve, L., 1987, “A Macroscopic View of the Sealing Phenomenon for Radial Lip Oil Seals,” Proceedings, 11th International Conference on Fluid Sealing, B. S. Nau, ed., BHRA, pp. 710–731.
3.
Horve, L., 1991, “The Correlation of Rotary Shaft Radial Lip Seal Service Reliability and Pumping Ability to Wear Track Roughness and Microasperity Formation,” SAE International Congress and Exposition, Detroit, paper no. 910530.
4.
Horve, L., 1992, “Understanding the Sealing Mechanism of the Radial Lip Seal for Rotating Shafts,” Proceedings, 13th International Conference on Fluid Sealing, B. S. Nau, ed., BHRG, pp. 5–20, Kluwer Academic Publishers.
5.
Jagger, E. T., 1957, “Study of the Lubrication of Synthetic Rubber Rotary Shaft Seals,” Proceedings, Conference on Lubrication and Wear, Inst. of Mech. Eng., pp. 409–415.
6.
Jagger
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.7.
Johnston, P. E., 1978, “Using the Fractional Torque of Rotary Shaft Seals to Estimate the Film Parameters and the Elastomer Surface Characteristics,” Proceedings, 8th International Conference on Fluid Sealing, B. S. Nau, ed., BHRA.
8.
Mu¨ller, H. K., 1987, “Concepts of Sealing Mechanism of Rubber Lip Type Rotary Shaft Scals,” Proceedings, 11th International Conference on Fluid Sealing, B. S. Nau, ed., BHRA, pp. 698–709.
9.
Salant
R. F.
1996
, “Elastohydrodynamic Model of the Rotary Lip Seal
,” ASME JOURNAL OF TRIBOLOGY
, Vol. 118
, pp. 292
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.10.
Salant
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Flaherty
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1995
, “Elastohydrodynamic Analysis of Reverse Pumping in Rotary Lip Seals with Microasperities
,” ASME JOURNAL OF TRIBOLOGY
, Vol. 117
, pp. 53
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.11.
Sponagel, S., Kilthau, G., and Spies, K. H., 1987, “Sealing Mechanisms of Lip Seals,” Proceedings, 11th International Conference on Fluid Sealing, B. S. Nau, ed., BHRA, pp. 748–772.
12.
Stakenborg
M. J. L.
1988
, “On the Sealing Mechanism of Radial Lip Seals
,” Tribology International
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, pp. 335
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.
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