Accession Number:

AD0416184

Title:

HARMONIC ANALYSIS OF THE RELATIVE AXIS MOTION INDUCED BY VARIABLE ELASTIC COMPLIANCE IN BALL BEARINGS.

Descriptive Note:

Special rept.,

Corporate Author:

SKF INDUSTRIES INC PHILADELPHIA PA

Personal Author(s):

Report Date:

1961-03-13

Pagination or Media Count:

23.0

Abstract:

The relative motion of the rings of a radially loaded, zero contact angle, ball bearing, induced by the variable elastic compliance of the bearing, was studied in SKF report L60LO23. A method was described for determining the wave forms of the displacement in the direction of, and perpendicu lar to the external radial load, for any radial load and positive radial looseness. It was shown that the variable elastic compliance motion does not follow a sine curve. In addition to vibrations in the fundamental frequency, cor responding to the frequency of ball passage, harmonics of higher order are present. This re port presents a method to determine the ampli tudes of the harmonics of velocity components of the variable compliance motion in radially loaded, zero contact angle, ball bearings in the direc tion of, and perpendicular to the external radial load. The method is based on harmonic analysis of the waveform computed according to Report L60LO23. The method was applied to a bearing with seven balls. Curves showing the amplitudes of the nine first harmonics are pre sented for this case. An extension of the method to other ball complements requires some further programming and computer work, but is otherwise straight-forward. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE