EXPERIMENTAL INVESTIGATION OF WHIRL IN SELF-ACTING AIR-LUBRICATED JOURNAL BEARINGS

Abstract

Bearing characteristics influencing the threshold speed at which large-amplitude self-excited whirl occurs in complete, air-lubricated journal bearings were experimentally investigated. By varying slenderness and clearance ratios and unit load, by opening or closing supply orifices, or by adding unbalance, the whirl threshold speed could be varied between zero and the limit set by the available power. Experimental methods of identifying the cylindrical and conical modes of synchronous and self-excited whirl are described. The whirl hysteresis region and the nature of whirl at speeds above th threshold are examined. Three methods of avoiding large-amplitude self-excited whirl are discussed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 27, 1961
Accession Number
AD0274551

Entities

People

  • D.b. Reynolds
  • W.a. Gross

Organizations

  • International Business Machines Corporation (Armonk, NY)

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Antifriction Bearings
  • Bearings
  • Clearances
  • Hysteresis
  • Journal Bearings

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Structural Dynamics.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).