COMPARISON BETWEEN THEORIES AND EXPERIMENTS FOR THE THRESHOLD OF INSTABILITY OF RIGID JOURNAL BEARINGS

Abstract

The threshold of Half Frequency Whirl for rigid rotor in self-acting plain cylindrical journal bearings was analyzed by several methods and the results were compared. The correlation between the various approaches appears to be good. The simplest method of analysis is therefore, used for comparison with experimental data. Experimental results showing the effect of bearing length and bearing load are compared with theory. The influence of bearing length on the threshold speed follows similarly as the calculated results. However, the experimental threshold speeds are always a little higher. In comparing the effect of bearing load it is seen that the calculated threshold speed is consistently somewhat overpessimistic, but the influence of rotor inclination is in very good agreement with experiment. The methods presented can be readily used in design to insure stable operation with plain cylindrical journal bearings. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 03, 1962
Accession Number
AD0282374

Entities

People

  • B. Sternlicht
  • C.h.t. Pan

Tags

DTIC Thesaurus Topics

  • Agreements
  • Bearings
  • Experimental Data
  • Frequency
  • Journal Bearings

Readers

  • Theoretical Analysis.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).
  • Vision Science/Vision Psychology/Cognitive Neuroscience.