Computer Simulation of Ball Bearing Dynamics and Correlation with Test Measurement on Ball Separator Motions.
Abstract
A high-speed computer program, SEPDYN, simulating all of the kinematics and dynamic motions of ball bearings was used to analyze and predict ball separator motions of an oil-lubricated 100-mm-bore ball bearing. The predicted ball separator motions were compared with actual test data on separator motions in this bearing, and remarkable agreement was found between predictions and measurements. All conditions tested showed that the ball separator whirls at approximately the ball orbit frequency and the computer predictions are in agreement with the observation. The axial or angular tilting of the separator was observed to exhibit both higher frequency nutation or 'squeal' as well as random or i.e. non-systematic motions. The computer predictions showed similar wave forms to the measured motions. Computer simulation times varied from 2 to 13 bearing race revolutions. One of the primary advantages of this computer program over other similar analysis routines is the highly efficient program design which minimizes computer run time while at the same time preserving a fully rigorous modeling of the bearing dynamics. All runs were completed within 17 minutes of C.P.U. time on an IBM 3084QX mainframe. Keywords: Ball Bearings, Cage, Instability, High-Speed Engine Bearings, Simulation
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1986
- Accession Number
- ADA178423
Entities
People
- C. R. Meeks
Organizations
- Hughes Aircraft Company