Details
| Original language | English |
|---|---|
| Article number | 106059 |
| Journal | Tribology International |
| Volume | 146 |
| Early online date | 3 Nov 2019 |
| Publication status | Published - Jun 2020 |
Abstract
The influences of thermal conductivity of both the contacting solids and the lubricant on the traction in a rolling/sliding EHL contact have been studied numerically. For through-hardened AISI 52100 bearing steel (k was measured as 21W/mK by Reddyhoff et al. see Tribol Lett 67(1):22, 2019), with the improper but widely used thermal conductivity of 46W/mK in literature, the friction coefficient can be overestimated and the maximum temperature in the lubricating film would be underestimated. The effect of solid thermal conductivity on traction depends on the entrainment speed and the resulting film thickness. For the thermal conductivity of the lubricant, its pressure dependence affects the traction mainly at high speeds and/or at high sliding-to-rolling ratio (SRR) conditions.
Keywords
- Bearing steel, Thermal conductivity, Thermal EHL, Traction
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. 146, 106059, 06.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influences of solid and lubricant thermal conductivity on traction in an EHL circular contact
AU - Liu, Haichao
AU - Zhang, Bing
AU - Bader, Norbert
AU - Poll, Gerhard
AU - Venner, C. H.
N1 - Funding information: The authors would like to thank Dr. Björling for providing the measured WAM traction curves with squalane. This work is partly supported by FVV-Research Association for Combustion Engines e.V., Germany, through Grant No. 6012773 . The first two authors, Liu and Zhang, would like to acknowledge the China Scholarship Council (CSC) for providing the scholarship.
PY - 2020/6
Y1 - 2020/6
N2 - The influences of thermal conductivity of both the contacting solids and the lubricant on the traction in a rolling/sliding EHL contact have been studied numerically. For through-hardened AISI 52100 bearing steel (k was measured as 21W/mK by Reddyhoff et al. see Tribol Lett 67(1):22, 2019), with the improper but widely used thermal conductivity of 46W/mK in literature, the friction coefficient can be overestimated and the maximum temperature in the lubricating film would be underestimated. The effect of solid thermal conductivity on traction depends on the entrainment speed and the resulting film thickness. For the thermal conductivity of the lubricant, its pressure dependence affects the traction mainly at high speeds and/or at high sliding-to-rolling ratio (SRR) conditions.
AB - The influences of thermal conductivity of both the contacting solids and the lubricant on the traction in a rolling/sliding EHL contact have been studied numerically. For through-hardened AISI 52100 bearing steel (k was measured as 21W/mK by Reddyhoff et al. see Tribol Lett 67(1):22, 2019), with the improper but widely used thermal conductivity of 46W/mK in literature, the friction coefficient can be overestimated and the maximum temperature in the lubricating film would be underestimated. The effect of solid thermal conductivity on traction depends on the entrainment speed and the resulting film thickness. For the thermal conductivity of the lubricant, its pressure dependence affects the traction mainly at high speeds and/or at high sliding-to-rolling ratio (SRR) conditions.
KW - Bearing steel
KW - Thermal conductivity
KW - Thermal EHL
KW - Traction
UR - http://www.scopus.com/inward/record.url?scp=85075362068&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2019.106059
DO - 10.1016/j.triboint.2019.106059
M3 - Article
AN - SCOPUS:85075362068
VL - 146
JO - Tribology International
JF - Tribology International
SN - 0301-679X
M1 - 106059
ER -