Abstract: The theoretical computation model of the composite journal
bearing sealed and lubricated with ferrofluid is established.
The oil film pressure distribution, temperature field and heat
conduction equation of the bearing liner are jointly calculated.
The static and dynamic properties of the bearing under condition
of different eccentricities and ratios of width to diameter are
obtained and discussed. The results show the feasibility of this
type of bearing for smaller eccentricities and width to diameter
ratios, and that the oil film temperature, which is more subject
to be influenced by the rotating speed, is higher than that of
the bearing with leakage flow. The key problem of the further
development and application of the bearing is to design more
reasonable and effective types of seal structures.
Key words: Ferrofluid
Journal bearing Self-seal
*
This project
is supported by National Natural Science Foundation of China. Manuscript
received on March 3, 1996; revised manuscript July 7, 1996
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