Experimental evaluation of damping coefficient of a squeeze film mounted ball bearing

Kumar, VA and Paranjape, PA (1979) Experimental evaluation of damping coefficient of a squeeze film mounted ball bearing. In: 4th International Symposium on Air Breathing Engines, 1-6 Apr 1979, Florida, USA.

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Abstract

The paper reports an investigation into the behavior of the damping coefficient of squeeze film mounted ball bearings with respect to stiffness of the rotor mount, unbalance, oil pressure, and squeeze film thickness. The damping coefficient was found to be practically independent of rotor speed and mount stiffness. The damping coefficient increases slightly with increasing oil pressure. The damping coefficient was found to vary in inverse proportion to the clearance raised to an exponent of about 3.48. Experimental values are generally somewhat higher than theoretical values reported in the literature.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Ball bearings;Fluid films;Vibration damping;Bandpass filters;Capacitance;Phase shift;Piezoelectric transducers;Real time operation;Rotor speed;Shafts(Machine elements);Signal to noise ratios;Stiffness
Subjects: AERONAUTICS > Aerodynamics
Division/Department: Propulsion Division, Propulsion Division
Depositing User: M/S ICAST NAL
Date Deposited: 30 Nov 2006
Last Modified: 24 May 2010 09:53
URI: http://nal-ir.nal.res.in/id/eprint/3560

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