Accession Number : AD0282374

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

Corporate Author : MECHANICAL TECHNOLOGY INC LATHAM N Y

Personal Author(s) : PAN,C.H.T. ; STERNLICHT,B.

Report Date : 03 AUG 1962

Pagination or Media Count : 1

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)

Descriptors :   *GAS BEARINGS, *JOURNAL BEARINGS, BEARINGS, DESIGN, LOADING, MATHEMATICAL ANALYSIS, STABILITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE