In the current study, in order to obtain a thick film thickness under zero entrainment velocity at low surface velocity, the effects of ambient viscosity, pressure–viscosity index of the lubricant, and the surface waviness are investigated numerically based on a thermal elastohydrodynamic lubrication mathematical model. The increasing ambient viscosity and modest waviness can deepen the dimple by a stronger “temperature-viscosity wedge” effect. With the combined effect of ambient viscosity, pressure–viscosity index, and surface waviness, a small centralized dimple in smooth contact evolves into a big classical one together with the disappearance of the former thin droopy film thickness.
HamrockBJDowsonD. Ball bearing lubrication, New York, NY: John Wiley & Sons, 1981.
2.
CameronA. Hydrodynamic lubrication of rotating disks in pure sliding, a new type of oil film formation. J Inst Pet1951; 37: 471–485.
3.
DysonAWilsonAR. Film thicknesses in elastohydrodynamic lubrication at high slide/roll ratios. Proc IMechE, Part J: J Engineering Tribology1968; 183: 81–97.
4.
CameronA. The viscosity wedge. ASLE Trans1958; 1: 248–253.
MisharinYASivyakovaAV. A laboratory study of anti-seizure properties of certain materials used for worm gears. Nat Res Council Canada Tech Trans1963. TT-1058.
7.
KingsburyEP. Large bearing operation without retainer. Lubric Eng1979; 35: 517–520.
8.
JonesWR. Long term performance of a retainerless bearing cartridge with an oozing flow lubricator for spacecraft applications1997Report, NASA/TM 107492, April.
Shogrin BA, Jones WR, Kingsbury EP, et al. Experimental study of load carrying capacity of point contacts at zero entrainment velocity. Report, NASA/TM 208650, October, 1998.
11.
YangPQuSChangQ. On the theory of thermal elastohydrodynamic lubrication at high slide-roll ratios-line contact solution. ASME J Tribol2001; 123: 36–41.
12.
YagiKKyogokuKNakaharaT. Temperature measurements of oil film and surface in point contact EHL under high slip ratio condition. J Jpn Soc Tribol2001; 46: 725–732.
13.
GuoFYangPWongPL. On the thermal elastohydrodynamic lubrication in opposite sliding circular contacts. Tribol Int2001; 34: 443–452.
14.
GuoFYangPQuS. On the theory of thermal elastohydrodynamic lubrication at high slide-roll ratios-circular glass-steel contact solution at opposite sliding. ASME J Tribol2001; 123: 816–821.
15.
GuoFWongPLYangP. Film formation in EHL point contacts under zero entraining velocity conditions. Tribol Trans2002; 45: 521–530.
16.
YagiKKyogokuKNakaharaT. Relationship between temperature distribution in EHL film and dimple formation. ASME J Tribol2005; 127: 658–665.
17.
ZhangBWangJOmastaM. Effect of fluid rheology on the thermal EHL oil film under zero entrainment velocity in line contact. Tribol Int2015; 87: 40–49.
18.
YangPWenS. A generalized Reynolds equation for non-Newtonian thermal elastohydrodynamic lubrication. ASME J Tribol1990; 112: 631–636.
19.
Roelands CJA. Correlation aspects of the viscosity–temperature–pressure relationship of lubricating oils. PhD thesis, Delft University of Technology, The Netherlands, 1966.
VennerCHLubrechtAA. Multilevel methods in lubrication, Amsterdam: Elsevier, 2000.
22.
WangJVennerCHLubrechtAA. Influence of surface waviness on the thermal elastohydrodynamic lubrication of an eccentric-tappet pair. ASME J Tribol2013; 135: 1–11.
23.
WangJLubrechtAASperkaP. Effect of high slide-roll ratio on thermal elastohydrodynamic lubrication in line contact with surface waviness. Proc IMechE, Part J: J Engineering Tribology2015; 229: 568–577.
