Vibration Characteristics of Hydrodynamic Fluid Film Pocket Journal Bearings

Abstract EN

Theoretical analyses of hydrodynamic fluid film bearings with different bearing profiles rely on solutions of the Reynolds equation.

This paper presents an approach used for analysing the so-called pocket bearings formed from a combination of offset circular bearing profiles.

The results show that the variation of the dynamic bearing characteristics with different load inclinations for the pocket bearings is less than that for the elliptic bearing counterpart.

It is shown that the natural frequencies as well as the critical speeds, and hence the vibrational behaviour, can also be significantly different for an industrial rotor supported by the different bearings.