Accession Number : ADA112009

Title :   Interactive Graphic Simulation of Rolling Element Bearings. Phase I. Low Frequency Phenomenon and RAPIDREB Development.

Descriptive Note : Final rept. 1 Aug 80-Sep 81,


Personal Author(s) : Gupta,Pradeep K

PDF Url : ADA112009

Report Date : Nov 1981

Pagination or Media Count : 139

Abstract : A selective suppression of the very high frequency content of the generalized motion simulated by the original DREB computer program has led to considerable increase in the maximum permissible time step size and hence performance simulations over relatively large time domains (several shaft revolutions) have been economically possible with the updated version RAPIDREB. Capabilities of RAPIDREB are demonstrated for both light load, low speed DMA (Despun Mechanical Assembly) ball bearings and the heavy load, high speed engine type ball bearings. From the simulations obtained over a shaft revolution it is shown that the race guided cage in the DMA bearings is generally stable while the ball guided cage produces relatively noisy and to some extent unstable cage motion. The high speed engine bearing performance is simulated over more than seven shaft revolutions. The steady whirl and continued contact of the cage with the guiding race is simulated under a combined thrust and radial load applied on the bearing. Thus conditions of excessive cage wear and eventual failure are simulated. (Author)

Descriptors :   *Bearings, *Roller bearings, *Computerized simulation, *Interactive graphics, Steady state, Low frequency, Computer programs, Lightweight, Loads(Forces), Low velocity, Time domain, Load distribution, Radial stress, Bearing cages

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE