Particulates Distribution in the Dynamic Pressure Sliding Bearing under the Oil Lubrication Condition

In the dynamic pressure sliding bearing under the oil lubrication condition, the lubrication oil between the journal and the bearing bush maintains the normal operation of the bearing, which is affected by the complete oil film, the boundary lubrication and the mixed film. With the increase of oil i...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-04, Vol.1885 (3), p.32044
Main Authors: He, Chen, Yu, Fanzhen, Yang, Kun
Format: Article
Language:English
Subjects:
Boundary lubrication
Cavitation
Condition monitoring
Dynamic pressure
Fault diagnosis
Journal bearings
Lubricating oils
Lubrication
Particulates
Physics
Pressure distribution
Rotating shafts
Service life
Sliding
Stress concentration
Thickness
Wear particles
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Summary:In the dynamic pressure sliding bearing under the oil lubrication condition, the lubrication oil between the journal and the bearing bush maintains the normal operation of the bearing, which is affected by the complete oil film, the boundary lubrication and the mixed film. With the increase of oil input and journal speed, it is not uniform towards the dynamic pressure distribution inside the sliding bearing. At the same time, cavitation is occurring, causing that particulates fall off the bearing surface, as well as the increase of the improper noises, which reduce the service life of the sliding bearing. The experimental result shows that the wear particles in the oil film are affected by the rotation speed of the shaft journal, the external load of the bearing and the size of the wear particles, so the wear particles in the bearing oil film are concentrated at the working face of the bearing bush and the minimum thickness of the oil film by centrifugal motion. Therefore, the study of the physical and chemical characteristics, which are talked on wear particles in the lubricating oil film of dynamic pressure sliding bearings, will play an important role in the fault diagnosis and condition monitoring of sliding bearings in the mechanical field.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1885/3/032044