Abstract
An experimental investigation is described of the whirl stability of a circumferentially grooved journal bearing carrying a stiff rotor. The shift and bearing were made with a slight taper so that the clearance could be infinitely varied, and the assembly could be tilted to any angle between the horizontal and vertical directions to vary the load on the bearing. These features allowed a wide range of running conditions. Experimental results imply that subambient film pressures are negligible, regardless of load, and that Reynolds boundary conditions apply with cavitation at ambient pressure. This has an important effect on film extent and, consequently, on promoting stability. The influence of feed pressure on the control of film extent, and hence on stability, is shown by analysis and experiment. Presented as an American Society of Lubrication Engineers paper at the ASLE/ASME Lubrication Conference in Minneapolis, Minnesota, October 24–26, 1978
Published Version
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