The influence of a circumferential feeding groove on the dynamic force response of a sealed squeeze film damper is determined experimentally. The damper is sealed by means of a serrated piston ring located at the discharge end of the damper. Damper configurations with two different groove depths and journal orbit radii were tested at increasing whirl frequencies. Large levels of dynamic pressure were measured at the circumferential groove, and relatively large tangential (damping) forces are produced at the groove which contribute considerably to the damping characteristics of the test damper. Radial forces were also determined at the feeding groove and at the film land for uncavitated flow conditions.
Issue Section:
Research Papers
1.
ANSI/ASME PCT 19.1, “Measurement Uncertainty, Instruments and Apparatus,” 1985.
2.
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3.
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San Andres
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.4.
Arauz
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San Andres
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1994
, “Effect of a Circumferential Feeding Groove on the Dynamic Force Response of a Short Squeeze Film Damper
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.5.
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.7.
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,” ASME JOURNAL OF TRIBOLOGY
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, 1
, pp. 155
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.8.
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,” ASLE Transactions
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.11.
San Andres, L. A., Meng, G., and Yoon, S., 1991, “Dynamic Response of an Open End Squeeze Film Damper,” ASME Transactions paper No. 91-GT-247.
12.
San Andres
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, “Analysis of Short Squeeze Film Dampers with a Central Groove
,” ASME JOURNAL OF TRIBOLOGY
, Vol. 112
, 4
, pp. 659
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.13.
San Andres, L. A., 1995, “Theoretical and Experimental Comparisons for Damping Coefficients of a Short Length Open-End Squeeze Film Damper,” ASME Transactions Paper No. 95-GT-98.
14.
Vance, J., 1988, Rotordynamics of Turbomachinery, Wiley, pp. 234–246.
15.
Vance, J., and San Andres, L. A., 1986, “Aircraft engine Rotor Squeeze Film Damper,” July 1986, US Patent #5067825, Disclosed to General Electric Co.
16.
Walton
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Schtrand
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, “Experimental Observation of Cavitating Squeeze-Film Dampers
,” ASME JOURNAL OF TRIBOLOGY
, Vol. 109
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.17.
Zeidan
F. Y.
Vance
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a, “Cavitation and Air Entrainment Effects on the Response of Squeeze Film Supported Rotors
,” ASME JOURNAL OF TRIBOLOGY
, Vol. 112
, pp. 347
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.18.
Zeidan
F. Y.
Vance
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1990
b, “Cavitation Regimes in Squeeze film Dampers and their Effect on the Pressure Distribution
,” Tribology Transactions
, Vol. 33
, pp. 447
–453
.19.
Zhang
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Roberts
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Ellis
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, “Experimental Behavior of a Short Cylindrical Squeeze Film Damper Executing Circular Centered Orbits
,” ASME JOURNAL OF TRIBOLOGY
, Vol. 116
, 3
, pp. 528
–534
.
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