TY - JOUR

T1 - Simplified traction prediction for highly loaded rolling/sliding EHL contacts

AU - Liu, Haichao

AU - Zhang, Bing

AU - Bader, Norbert

AU - Venner, C. H.

AU - Poll, Gerhard

N1 - Funding information: The authors would like to thank JA Greenwood for valuable suggestions. This work is partly supported by FVV-Research Association for Combustion Engines e.V., Germany , through Grant . The first two authors would like to acknowledge the China Scholarship Council (CSC) for providing the scholarship. The authors would like to thank JA Greenwood for valuable suggestions. This work is partly supported by FVV-Research Association for Combustion Engines e.V. Germany, through Grant No.6012773. The first two authors would like to acknowledge the China Scholarship Council (CSC) for providing the scholarship.

PY - 2020/8

Y1 - 2020/8

N2 - A simplified traction prediction approach has been developed for highly loaded EHL contacts accounting for non-Newtonian and thermal effects. For validation, a reference fluid squalane was used for traction measurements at high Hertzian contact pressures (1.25 to 2.66GPa) at three velocities of 5, 10 and 15m/s. Good agreement was seen for traction curves in a semi-log scale at a low speed of 5m/s, whereas for higher speeds at 10m/s and 15m/s, the measured traction curves are lower than the predicted ones. This reduced friction in the experimental results is caused by the increase in mass temperature of the discs. Two possible mechanisms for this reduced friction due to solid body temperature effects are discussed.

AB - A simplified traction prediction approach has been developed for highly loaded EHL contacts accounting for non-Newtonian and thermal effects. For validation, a reference fluid squalane was used for traction measurements at high Hertzian contact pressures (1.25 to 2.66GPa) at three velocities of 5, 10 and 15m/s. Good agreement was seen for traction curves in a semi-log scale at a low speed of 5m/s, whereas for higher speeds at 10m/s and 15m/s, the measured traction curves are lower than the predicted ones. This reduced friction in the experimental results is caused by the increase in mass temperature of the discs. Two possible mechanisms for this reduced friction due to solid body temperature effects are discussed.

KW - EHL Traction

KW - Maximum shear stress

KW - Rolling/sliding contacts

KW - Solid body temperature

UR - http://www.scopus.com/inward/record.url?scp=85082648559&partnerID=8YFLogxK

U2 - 10.1016/j.triboint.2020.106335

DO - 10.1016/j.triboint.2020.106335

M3 - Article

AN - SCOPUS:85082648559

VL - 148

JO - Tribology International

JF - Tribology International

SN - 0301-679X

M1 - 106335

ER -