A face seal model consisting of a rigidly mounted rotor and a flexibly mounted stator was tested under conditions of eccentric loading. Self-excited oscillations in the form of combined precession and nutation of the stator were observed. The nature of the motion and its frequency are dependent on rotational speed, seal clearance, and external tilting moment. It is possible that some unexplained seal failures and waviness of seal faces are the result of such self excited wobble.
Observation of Self-Excited Wobble in Face Seals
Department of Mechanical Engineering, Technion Haifa, Israel
R. A. Burton
Department of Mechanical Engineering and Astronautical Sciences, Northwestern University, Evanston, Ill.
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Etsion, I., and Burton, R. A. (October 1, 1979). "Observation of Self-Excited Wobble in Face Seals." ASME. J. of Lubrication Tech. October 1979; 101(4): 526–528. https://doi.org/10.1115/1.3453407
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