A UNIVERSALLY VALID COMPRESSIBLE THEORY FOR GAS-LUBRICATED, NARROW, SPIRAL-GROOVED THRUST BEARINGS.

Abstract

Whipple's theory for spiral-grooved bearings becomes inaccurate when a fixed geometry (including overall geometry and number of grooves) is required to operate at a large compressibility number. This phenomenon is in addition to the end leakage effect previously considered by Muyderman. Earlier works concerned with the local compressibility effect predicted load capacity degradation in comparison with that calculated load capacity degradation in comparison with that calculated according to Whipple's theory. The amount of load degradation increases with the local compressibility number based on the ambient pressure and with the width-to-length ratio of the grooves. A new theory was developed such that the pressure field can be calculated in a self-consistent manner for narrow-groove bearings of any value of the local compressibility number. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1969
Accession Number
AD0686028

Entities

People

  • Coda H. T. Pan

Tags

DTIC Thesaurus Topics

  • Bearings
  • Compressive Properties
  • Degradation
  • Geometry
  • Thrust Bearings

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).