The Stability of the Central Equilibrium Position of the Journal in a Bearing with Gas Lubrication,

Abstract

A study is given of the stability of the central equilibrium position of a gas bearing supported rotor, taking into account the inertia and compressibility of the lubricant. The additional pressure and sustaining force during motion of the center of the bearing pivot relative to the central equilibrium position are determined. It is shown that a stability limit exists only at Reynolds numbers greater than zero. A condition of stability as a function of the main parameters of the bearing is obtained, and the effect of these parameters on the location of the stability group is investigated. The necessity of taking the inertia of the gas lubricant into account in determining the stability is confirmed.

Document Details

Document Type
Technical Report
Publication Date
May 17, 1971
Accession Number
AD0727270

Entities

People

  • A. G. Burgvits
  • G. A. Zavyalov

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Bearings
  • Compressive Properties
  • Dynamics
  • Gas Bearings
  • Lubricants
  • Lubrication
  • Mechanical Properties
  • Mechanics
  • Physics
  • Reynolds Number

Fields of Study

  • Engineering

Readers

  • Fluid Dynamics.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).