The author questions the accuracy of application of the Roelands equation in pressureviscosity relationships for lubricants. He contends that in the development of his equation when Roelands discarded some vital data on high-viscosity measurements that did not fit his claim of universal applicability. The author suggests that some conclusions based upon calculations using the Roelands equation should be reexamined.
RoelandsC. J. A.Correlational aspects of the viscosity-temperature-pressure relationship of lubricating oils. Thesis, University Microfilms, Ann Arbor, Michigan, 1966, pp. 115 and 163.
2.
DowsonD.EhretP.Past, present and future studies in elastohydrodynamicsProc. Instn Mech. Engrs, Part J: J. Engineering Tribology, 1999, 213 (J5), 317–333.
3.
OlverA. V.SpikesH. A.Prediction of traction in elastohydrodynamic lubricationProc. Instn Mech. Engrs, Part J: J. Engineering Tribology, 1998, 212 (J5), 321–332.
4.
BairS.A note on the use of Roelands equation to describe viscosity for EHD Hertzian zone calculationsTrans. ASME, J. Tribology, 1993, 115, 333–334.
5.
LowitzD. A.SpencerJ. W.WebbW.SchiesslerR. W.Temperature-pressure-structure effects on the viscosity of several higher hydrocarbonsJ. Chem. Phys., 1959, 30 (1), 73–83.
6.
ASME Research Committee on Lubrication, Pressure-Viscosity Report, Vol. II, 1953 (American Society of Mechanical Engineers, New York).
7.
ZhaoJ.SadeghiF.Analysis of EHL circular contact shut downTrans. ASME, J. Tribology, 2003, 125, 76–90.
8.
LarssonR.LarssonP. O.ErikssonE.SjobergM.HoglundE.Lubricant properties for input to hydrodynamic and elastohydrodynamic lubrication analysesProc. Instn Mech. Engrs, Part J: J. Engineering Tribology, 2000, 214 (J1), 17–27.
9.
YangP.KanetaM.MasudaS.Quantitative comparisons between measured and solved EHL dimples in point contactsTrans. ASME, J. Tribology, 2003, 125, 210–214.
10.
PetterssonA.LarssonR.NorrbyT.AnderssonO.Properties of base fluids for environmentally adapted lubricants. In 2nd World Tribology Congress, 2001, paper M-21-14-540.
