University of Sussex
Browse
lubricants-06-00075-v2.pdf (6.52 MB)

Cavitation growth phenomena in pure-sliding grease EHD contacts

Download (6.52 MB)
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 Joichi
This 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

Lubricants

ISSN

2075-4442

Publisher

MDPI

Issue

3

Volume

6

Department 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

2018-08-31

First Open Access (FOA) Date

2018-08-31

First Compliant Deposit (FCD) Date

2018-08-30

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC