Details
| Original language | English |
|---|---|
| Article number | 109469 |
| Number of pages | 12 |
| Journal | Tribology international |
| Volume | 194 |
| Early online date | 27 Feb 2024 |
| Publication status | Published - Jun 2024 |
Abstract
This study addresses the oil starvation problem in roller bearing line contacts and proposes a novel Chevron-shaped wetting/oleophilic pattern on the bearing track to enhance oil replenishment. Validation through optical cylinder-on-disc lubrication film tests reveals the impact of the pattern on inlet oil supply and film thickness. Notably, a Chevron pattern oriented opposite to disc movement significantly increases film thickness. Wetting is more pronounced in oleophilic areas (Chevron pattern), forming an inverted V-shaped “virtual wall” that directs lubricant backflow toward the center and reduces side leakage. A pattern length equal to the bearing track width was found to be more effective compared to smaller sizes, as the oil side ridges are located on the oleophobic and oleophilic boundaries, which capitalizes the wettability step effect more effectively. This research provides a basis for designing oleophobic surfaces with improved anti-wear and anti-friction properties.
Keywords
- Chevron, Limited lubricant supply, Line contact, Oil starvation, Wetting pattern
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Tribology international, Vol. 194, 109469, 06.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Effect of chevron-shaped wetting patterns on oil film thickness in cylinder-on-disc contact under starved lubrication or limited lubricant supply
AU - Liu, Yuting
AU - Guo, Feng
AU - Jin, Wei
AU - Wong, Pat Lam
AU - Jing, Zhaogang
AU - Li, Xinming
AU - Poll, Gerhard
AU - Chen, Qingsong
N1 - Funding Information: The authors are grateful for the financial support from Natural Science Foundation of China (No. 52175173), Sino-German Mobility Program (No. M0380) and Shandong Zhilian Community Bearing Technology Co. Ltd. (KF-0084).
PY - 2024/6
Y1 - 2024/6
N2 - This study addresses the oil starvation problem in roller bearing line contacts and proposes a novel Chevron-shaped wetting/oleophilic pattern on the bearing track to enhance oil replenishment. Validation through optical cylinder-on-disc lubrication film tests reveals the impact of the pattern on inlet oil supply and film thickness. Notably, a Chevron pattern oriented opposite to disc movement significantly increases film thickness. Wetting is more pronounced in oleophilic areas (Chevron pattern), forming an inverted V-shaped “virtual wall” that directs lubricant backflow toward the center and reduces side leakage. A pattern length equal to the bearing track width was found to be more effective compared to smaller sizes, as the oil side ridges are located on the oleophobic and oleophilic boundaries, which capitalizes the wettability step effect more effectively. This research provides a basis for designing oleophobic surfaces with improved anti-wear and anti-friction properties.
AB - This study addresses the oil starvation problem in roller bearing line contacts and proposes a novel Chevron-shaped wetting/oleophilic pattern on the bearing track to enhance oil replenishment. Validation through optical cylinder-on-disc lubrication film tests reveals the impact of the pattern on inlet oil supply and film thickness. Notably, a Chevron pattern oriented opposite to disc movement significantly increases film thickness. Wetting is more pronounced in oleophilic areas (Chevron pattern), forming an inverted V-shaped “virtual wall” that directs lubricant backflow toward the center and reduces side leakage. A pattern length equal to the bearing track width was found to be more effective compared to smaller sizes, as the oil side ridges are located on the oleophobic and oleophilic boundaries, which capitalizes the wettability step effect more effectively. This research provides a basis for designing oleophobic surfaces with improved anti-wear and anti-friction properties.
KW - Chevron
KW - Limited lubricant supply
KW - Line contact
KW - Oil starvation
KW - Wetting pattern
UR - http://www.scopus.com/inward/record.url?scp=85187206510&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2024.109469
DO - 10.1016/j.triboint.2024.109469
M3 - Article
AN - SCOPUS:85187206510
VL - 194
JO - Tribology international
JF - Tribology international
SN - 0301-679X
M1 - 109469
ER -