The dynamic properties of an industrial Squeeze-Film Damper (SFD) bearing design are described using the well-known perturbation approach, where the reaction forces induced by small movements away from the position of equilibrium are expanded into a Taylor series in terms of displacement, velocity, and acceleration. Although generally negligible, the acceleration term can become significant in SFD bearings when inertia effects in the damper lands are enhanced by the flow in a central circumferential oil supply groove. By using a bulk flow approximation in the oil supply groove an explicit expression is derived for the acceleration term. Experimental results confirm the significance of the oil supply groove geometry and appear to validate the bulk flow approximation.
Inertia Effects in Squeeze-Film Damper Bearings Generated by Circumferential Oil Supply Groove
Contributed by the Technical Committee on Vibration and Sound for publication in the Jørgen Lund Special Issue of the JOURNAL OF VIBRATION AND ACOUSTICS. Manuscript received June 2003. Guest Associate Editor: R. Gordon Kirk.
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Lund , J. W., Myllerup , C. M., and Hartmann, H. (October 8, 2003). "Inertia Effects in Squeeze-Film Damper Bearings Generated by Circumferential Oil Supply Groove ." ASME. J. Vib. Acoust. October 2003; 125(4): 495–499. https://doi.org/10.1115/1.1606711
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