Details
| Original language | English |
|---|---|
| Pages (from-to) | 179-190 |
| Number of pages | 12 |
| Journal | Friction |
| Volume | 9 |
| Issue number | 1 |
| Early online date | 26 Aug 2020 |
| Publication status | Published - Feb 2021 |
Abstract
Although most rolling element bearings are grease lubricated, the underlying mechanisms of grease lubrication has not been fully explored. This study investigates grease film evolution with glass disc revolutions in rolling elastohydrodynamic lubrication (EHL) contacts. The evolution patterns of the grease films were highly related to the speed ranges and grease structures. The transference of thickener lumps, film thickness decay induced by starvation, and residual layer were recognized. The formation of an equilibrium film determined by the balance of lubricant loss and replenishment was analyzed. The primary mechanisms that dominate grease film formation in different lubricated contacts were clarified.
Keywords
- elastohydrodynamic lubrication (EHL), grease lubrication, replenishment, rolling contacts, starvation
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Friction, Vol. 9, No. 1, 02.2021, p. 179-190.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Grease film evolution in rolling elastohydrodynamic lubrication contacts
AU - Li, Xinming
AU - Guo, Feng
AU - Poll, Gerhard
AU - Fei, Yang
AU - Yang, Ping
N1 - Funding Information: The authors would like to express their thanks to the financial supports from the National Natural Science Foundation of China (Nos. 51875299 and 51775286) and the Natural Science Foundation of Shandong Province (No. ZR2019MEE044)
PY - 2021/2
Y1 - 2021/2
N2 - Although most rolling element bearings are grease lubricated, the underlying mechanisms of grease lubrication has not been fully explored. This study investigates grease film evolution with glass disc revolutions in rolling elastohydrodynamic lubrication (EHL) contacts. The evolution patterns of the grease films were highly related to the speed ranges and grease structures. The transference of thickener lumps, film thickness decay induced by starvation, and residual layer were recognized. The formation of an equilibrium film determined by the balance of lubricant loss and replenishment was analyzed. The primary mechanisms that dominate grease film formation in different lubricated contacts were clarified.
AB - Although most rolling element bearings are grease lubricated, the underlying mechanisms of grease lubrication has not been fully explored. This study investigates grease film evolution with glass disc revolutions in rolling elastohydrodynamic lubrication (EHL) contacts. The evolution patterns of the grease films were highly related to the speed ranges and grease structures. The transference of thickener lumps, film thickness decay induced by starvation, and residual layer were recognized. The formation of an equilibrium film determined by the balance of lubricant loss and replenishment was analyzed. The primary mechanisms that dominate grease film formation in different lubricated contacts were clarified.
KW - elastohydrodynamic lubrication (EHL)
KW - grease lubrication
KW - replenishment
KW - rolling contacts
KW - starvation
UR - http://www.scopus.com/inward/record.url?scp=85089906593&partnerID=8YFLogxK
U2 - 10.1007/s40544-020-0381-4
DO - 10.1007/s40544-020-0381-4
M3 - Article
AN - SCOPUS:85089906593
VL - 9
SP - 179
EP - 190
JO - Friction
JF - Friction
SN - 2223-7690
IS - 1
ER -