lubricants-06-00075-v2.pdf (6.52 MB)
Cavitation growth phenomena in pure-sliding grease EHD contacts
Version 2 2023-06-12, 07:25
Version 1 2023-06-09, 14:52
journal contribution
posted on 2023-06-12, 07:25 authored by Takefumi Otsu, Romeo GlovneaRomeo Glovnea, Sugimura JoichiThis article describes experimental and theoretical studies on the cavitation phenomena in the grease lubrication film under pure sliding elastohydrodynamic contact. In-situ observation tests using the optical interferometry technique were conducted, and the growth of cavitation was captured using a high speed camera. The results showed that the cavity grew in two stages, which was similar to the behaviour in the base oil, and that the cavity growth rate in the initial stage was higher than that in the second stage. In the initial stage, the cavity growth time in the grease was longer than that in the base oil, and the cavity length after the growth depended on the base oil viscosity. It was also found in the test using diurea grease that small cavities were formed by the lumps of thickener. The cavity growth in the initial stage was discussed by numerical simulation of pressure distribution based on a simple rheological model.
History
Publication status
- Published
File Version
- Published version
Journal
LubricantsISSN
2075-4442Publisher
MDPIExternal DOI
Issue
3Volume
6Department affiliated with
- Engineering and Design Publications
Research groups affiliated with
- Dynamics, Control and Vehicle Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-08-31First Open Access (FOA) Date
2018-08-31First Compliant Deposit (FCD) Date
2018-08-30Usage metrics
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