The effects of surface irregularities on rolling and/or sliding point contact elastohydrodynamic lubrication (EHL) have been surveyed on the basis of direct observations using the duo-chromatic optical interferometry technique. A local fluctuation in film thickness caused by surface irregularities depends strongly on shear flow dominating the EHL conjunction and side leakage. The influence of pressure flow has been examined in relation to the local entrapment at asperities due to pure squeeze motion. In reciprocating motion with a small length of the stroke, EHL films are affected not only by surface irregularities but also by air bubbles produced in the previous stroke. The effects of thickener lumps and groove on grease EHL have also been discussed.
FowlesP. E.A thermal elastohydrodynamic theory for individual asperity-asperity collisionsTrans. ASME, J. Lubric. Technol., 1971, 93 (3), 383–397.
2.
ChowL. S.H.ChengH. S.Influence of surface roughness and waviness on film thickness and pressure distribution in elastohydrodynamic contacts. NASA CR-2670, 1976.
3.
JacksonA.CameronA.An interferometric study of the EHL of rough surfacesASLE Trans., 1976, 19 (1), 50–60.
4.
ChengH. S.On some aspects of microelastohydrodynamic lubrication. In Proceedings of 4th Leeds-Lyon Symposium, 1977, pp. 71–79.
5.
WedevenL. D.Influence of debris dent on EHD lubricationASLE Trans., 1978, 21 (1), 41–52.
6.
WedevenL. D.CusanoC.Elastohydrodynamic film thickness measurements of artificially produced surface dents and groovesASLE Trans., 1979, 22 (4), 369–381.
7.
KanetaM.CameronA.Effects of asperities in elastohydrodynamic lubricationTrans. ASME, J. Lubric. Technol., 1980, 102, 374–379.
8.
CusanoC.WedevenL. D.Elastohydrodynamic film thickness measurements of artificially produced non-smooth surfacesASLE Trans., 1981, 24 (1), 1–14.
9.
CusanoC.WedevenL. D.The effects of artificially produced defects on the film thickness distribution in sliding EHD point contactsTrans. ASME, J. Lubric. Technol., 1982, 104 (3), 365–375.
10.
CusanoC.WedevenL. D.The influence of surface dents and grooves on traction in sliding EHD point contactsASLE Trans., 1983, 26 (3), 306–310.
11.
GogliaP. R.ConryT. F.CusanoC.The effects of surface irregularities on the elastohydrodynamic lubrication of sliding line contactsTrans. ASME, J. Tribology, 1984, 106 (1), 104–119.
12.
HoupertL. G.HamrockB. J.Elastohydrodynamic lubrication calculations used as a tool to study scuffing. In Proceedings of 12th Leeds-Lyon Symposium, 1985, pp. 146–155.
13.
KaramiG.EvansH. P.SnidleR. W.Elastohydrodynamic lubrication of circumferentially finished rollers having sinusoidal roughnessProc. Instn Mech. Engrs, Part C, Journal of Mechanical Engineering Science, 1987, 201 (C1), 29–36.
14.
LingF. B.EvansH. P.SnidleR. W.Micro-elastohydrodynamic lubrication of circumferentially finished rollers: The influence of temperature and roughnessTrans. ASME, J. Tribology, 1986, 111 (4), 730–736.
15.
KwehC. C.EvansH. P.SnidleR. W.Microelastohydrodynamic lubrication of an elliptical contact with temperature and three-dimensional sinusoidal roughnessTrans. ASME, J. Tribology, 1986, 111 (4), 577–584.
16.
LubrechtA. A.ten NapelW. E.BosmaR.The influence of longitudinal and transverse roughness on the elastohydrodynamic lubrication of circular contactsTrans. ASME, J. Tribology, 1988, 110 (3), 421–426.
17.
ChangL.CusanoC.ConryT. F.Effects of lubricant rheology and kinematic conditions on micro-elastohydro-dynamic lubricationTrans. ASME, J. Tribology, 1989, 111 (2), 344–351.
18.
BaglinK. P.Some aspects of the micro-elastohydrodynamic lubrication of rough cylinders finished with a circumferential layProc. Instn Mech. Engrs, Part C, Journal of Mechanical Engineering Science, 1990, 204 (C3), 145–158.
19.
AiX.ZhengZ.A general model for microelastohydro-dynamic lubrication and its full numerical solutionTrans. ASME, J. Tribology, 1989, 111 (4), 569–576.
20.
VennerC. H.Multilevel solution of the EHL line and contact problems. PhD thesis, Twente University, The Netherlands, 1991.
21.
VennerC. H.LubrechtA. A.ten NapelW. E.Numerical simulation of the overrolling of a surface feature in an EHL line contactTrans. ASME, J. Tribology, 1991, 113 (4), 777–783.
22.
PingH.SbizhuW.Study on oil film and pressure distribution of micro-EHLTrans. ASME, J. Tribology, 1992, 114 (1), 42–46.
23.
SilvaG. M. S.LeatherJ. A.SaylesR. S.The influence of surface topography on the lubricant film thickness in an elastohydrodynamic (EHD) point contact. In Proceedings of 12th Leeds-Lyon Symposium, 1985, pp. 258–272.
24.
TenderK.JacobsenJ.Interferometric studies of effects of striate roughness on lubricant film thickness under elastohydrodynamic conditionsTrans. ASME, J. Tribology, 1992, 114 (1), 52–56.
25.
SadeghiF.KimK.-H.Effects of a single bump and dent in time dependent thermal line EHD lubricationTrans. ASME, J. Tribology, 1994, 114 (1), 9–20.
26.
ChangL.WebsterM. N.JacksonA.A line contact micro-EHL model with three-dimensional surface topographyTrans. ASME, J. Tribology, 1994, 114 (1), 21–28.
27.
AiX.ChengH. S.The influence of moving dent on point EHL contactsTribology Trans., 1994, 37 (2), 323–335.
28.
AiX.ChengH. S.Numerical simulation of elastohy-drodynamically lubricated contacts with rough surfacesAppl. Mech. Rev., 1994, 47 (6), 221–227.
29.
AiX.ChengH. S.A transient EHL analysis for line contacts with measured surface roughness using multigrid techniqueTrans. ASME, J. Tribology, 1994, 116, 549–558.
30.
VennerC. H.LubrechtA. A.Transient analysis of surface features in an EHL line contact in the case of slidingTrans. ASME, J. Tribology, 1994, 116, 186–193.
31.
VennerC. H.LubrechtA. A.Numerical simulation of a transverse ridge in a circular EHL contact under rolling/ slidingTrans. ASME, J. Tribology, 1994, 116, 751–761.
32.
VennerC. H.LubrechtA. A.Numerical simulation of waviness in a circular contact, under rolling/sliding. In Proceedings of 21st Leeds-Lyon Symposium, 1994, pp. 259–272.
33.
VennerC. H.LubrechtA. A.Numerical analysis of the influence of waviness on the film thickness of a circular EHL contactTrans. ASME, J. Tribology, 1996, 118, 153–161.
34.
AiX.ChengH. S.The effects of surface texture on EHL point contactsTrans. ASME, J. Tribology, 1996, 118, 59–67.
35.
AiX.LeeSi. C.Effect of slide-to-roll ratio on interior stresses around a dent in EHL contactsTribology Trans., 1996, 39 (4), 881–889.
36.
VennerC. H.CouhierF.LubrechtA. A.GreenwoodJ. A.Amplitude reduction of waviness in transient EHL line contacts. In Proceedings of 23rd Leeds-Lyon Symposium, 1996, pp. 103–112.
37.
KamamotoS.SakuraiM.FujimotoK.YamamotoT.Effect of microcavitation on oil film thickness and pressure distributions in micro-EHL line contacts. In Proceedings of 23rd Leeds-Lyon Symposium, 1996, pp. 113–124.
38.
EhretP.DowsonD.TaylorC. M.Time-dependent solutions with waviness and asperities in EHL point contacts. In Proceedings of 23rd Leeds-Lyon Symposium, 1996, pp. 313–324.
39.
KanetaM.KanzakiY.Effects of surface roughness on squeeze film characteristics in EHL (in Japanese)Tribologist, 1991, 36, 319–326.
40.
KanetaM.SakaiT.NishikawaH.Optical interferometric observations of the effects of a bump on point contact EHLTrans. ASME, J. Tribology, 1992, 114, 779–784.
41.
KanetaM.SakaiT.NishikawaH.Effects of surface roughness on point contact EHLTribology Trans., 1993, 36 (4), 605–612.
42.
KanetaM.Effects of surface roughness in elastohydrodynamic lubricationJap. Soc. Mech. Engrs Int. J. Ser. III, 1992, 35 (4), 535–546.
43.
KanetaM.NishikawaH.Local reduction in thickness of point contact EHL films caused by a transversely oriented moving groove and its recoveryTrans. ASME, J. Tribology, 1994, 116, 635–639.
44.
KanetaM.NishikawaH.Effects of transversely oriented moving multiple grooves on local reduction in EHL films and its recovery. In Proceedings of International Tribology Conference, Yokohama, 1995, pp. 1055–1059.
45.
KanetaM.KanadaT.NishikawaH.Optical interferometric observations of the effects of a moving dent on point contact EHL. In Proceedings of 23rd Leeds-Lyon Symposium, 1996, pp. 69–79.
46.
JacobsonB.An experimental determination of the solidification velocity for mineral oilsASLE Trans., 1974, 17 (4), 290–294.
47.
KanetaM.KanzakiY.KameishiK.NishikawaH.Non-Newtonian response of elastohydrodynamic oil films. In Proceedings of Japan International Tribology Conference, Nagoya, 1990, pp. 1695–1700.
48.
HiranoF.OhnoN.Fundamental study of static sealing characteristics of solidified oils at high pressure. In Proceedings of 13th International Conference onFluid Sealing, 1992, pp. 109–120.
49.
NishikawaH.HandaK.KanetaM.Behavior of EHL films in reciprocating motionJap. Soc. Mech. Engrs Int. J., C, 1995, 38 (3), 558–567.
50.
NishikawaH.KanetaM.Traction in EHL under pure sliding reciprocation with cyclic impact loadingJap. Soc. Mech. Engrs Int. J., C, 1995, 38 (3), 568–576.
51.
CannP. M. E.Understanding grease lubrication. In Proceedings of 22nd Leeds-Lyon Symposium, 1995, pp. 573–581.
