Accession Number : AD0436263


Title :   CHARACTERISTICS OF HERRINGBONE-GROOVED, GASLUBRICATED JOURNAL BEARNINGS,


Corporate Author : MECHANICAL TECHNOLOGY INC LATHAM N Y


Personal Author(s) : Vohr,John H ; Chow,C Y


Report Date : 02 Apr 1964


Pagination or Media Count : 44


Abstract : A differential equation is obtained for the smoothed overall pressure distribution around a herringbone-grooved, gas-lubricated, journal bearing operating with a variable film thickness. The equation is based on the limiting case of an idealized bearing for which the number of grooves approaches an infinite number. A numerical solution to the differential equation is obtained valid for small eccentricities. This solution includes the case where the journal is undergoing steady circular whirl. In addition to the usual plain bearing parameters L/D and lambda, the behavior of a grooved bearing also depends on four additional parameters: The groove angle beta, the relative groove width alpha, the relative groove depth H sub o, and a compressibility number, lambda sub s, which is based on the relative speeds of the grooved and smooth members of the bearing. Results are presented showing bearing radial force and attitude angle as functions of beta, alpha, H sub o, the compressibility number lambda, and also whirl speed ration. (Author)


Descriptors :   *DIFFERENTIAL EQUATIONS , LUBRICATION , GASES , LUBRICATION , JOURNAL BEARINGS , LOAD DISTRIBUTION , PHYSICAL PROPERTIES , PRESSURE , COMPUTER PROGRAMMING , CONFIGURATIONS , COMPRESSIVE PROPERTIES


Distribution Statement : APPROVED FOR PUBLIC RELEASE