A model was developed to study the effects of a rigid debris on elastohydrodynamic lubrication of rolling/sliding contacts. In order to achieve the objectives the time dependent Reynolds equation was modified to include the effects of an ellipsoidal shaped debris. The modified time dependent Reynolds and elasticity equations were simultaneously solved to determine the pressure and film thickness in EHL contacts. The debris force balance equation was solved to determine the debris velocity. The model was then used to obtain results for a variety of loads, speeds, and debris sizes. The results indicate that the debris has a significant effect on the pressure distribution and causes a dent on the rolling/sliding bounding surfaces. Depending on the size and location of the debris the pressure generated within the contact can be high enough to plastically deform the bounding surfaces. Debris smaller than the minimum film thickness do not enter the contact and only large and more spherical debris move toward the contact. [S0742-4787(11)00501-7]
Issue Section:
Technical Papers
1.
Cusano
, C.
, and Sliney
, H. E.
, 1982
, “Dynamic of Solid Dispersions in Oil During the Lubrication of Point Contacts: Part I—Graphite
,” ASLE Trans.
, 25 pp
, 183
–189
.2.
Cusano
, C.
, and Sliney
, H. E.
, 1982
, “Dynamic of Solid Dispersions in Oil During the Lubrication of Point Contacts: Part II—Molybdenum Disulfide
,” ASLE Trans.
, 25
, pp. 190
–197
.3.
Wan
, G. T. Y.
, and Spikes
, H. A.
, 1988
, “The Behavior of Suspended Solid Particles in Rolling and Sliding Elastohydrodynamic Contacts
,” STLE Tribol. Trans.
, 31
, No. 1
, pp. 12
–21
.4.
Hamer, J. C., Sayles, R. S., and Ioannides, E., 1987, “Deformation Mechanisms and Stresses Created by Third Body Debris Contacts and Their Effects on Rolling Bearing Fatigue,” Interface Dynamics, Proceedings of the 14th Leeds-Lyon Symposium on Tribology, Lyon, London, United Kingdom, Tribology Series 12, Elsevier, New York, pp. 201–208.
5.
Hamer
, J. C.
, Sayles
, R. S.
, and Ioannides
, E.
, 1989
, “Particle Deformation and Counterface Damage When Relatively Soft Particles are Squashed Between Hard Anvils
,” STLE Tribol. Trans.
, 32
, No. 3
, pp. 281
–288
.6.
Nixon, H. P., and Cogdell, J. D., 1998, “Debris Signature Analysis: A Method for Assessing the Detrimental Effect of Specific Debris contained Lubrication Environments,” SAE Paper 981478.
7.
Dwyer-Joyce, R. S., Hamer, J. C., Sayles, R. S., and Ioannides, E., 1990, “Surface Damage Effects Caused by Debris in Rolling Bearing Lubricants, With an Emphasis on Friable Materials,” in Rolling Element Bearings-Towards the 21st Century, Mechanical Engineering Publications for the I. Mech. E., Professional Engineering Publishing, United Kingdom, pp. 17–24.
8.
Ville, F., and Ne´lias, D., 1998, “Influence of the Nature and Size of Solid Particles on the Indentation Features in EHL Contacts,” Proceedings of the 24th Leeds-Lyon Symposium on Tribology, London, United Kingdom, Dowson et al., eds, Tribology Series, 34, Elsevier, New York, pp. 399–410.
9.
Ai
, X.
, and Cheng
, H. S.
, 1994
, “Influence of Moving Dent on Point EHL Contacts
,” STLE Tribol. Trans.
, 37
, No. 2
, pp. 323
–335
.10.
Ai
, X.
, and Lee
, S. C.
, 1996
, “Effect of Slide-to-Roll Ratio on Interior Stresses Around a Dent in EHL Contacts
,” STLE Tribol. Trans.
, 39
, No. 4
, pp. 881
–889
.11.
Xu
, G.
, and Sadeghi
, F.
, 1996
, “Spall Initiation and Propagation due to Debris Denting
,” Wear
, 201
, pp. 106
–116
.12.
Xu
, G.
, Nickel
, D. A.
, Sadeghi
, F.
, and Ai
, X.
, 1996
, “Elasto-Plasto Hydrodynamic Lubrication With Dent Effects
,” United Kingdom Inst. Mech. Eng. J. Eng. Tribol.
, 210
, pp. 233
–245
.13.
Xu
, G.
, Sadeghi
, F.
, and Cogdell
, J. D.
, 1997
, “Debris Denting Effects on Elastohydrodynamic Lubricated Contacts
,” ASME J. Tribol.
, 119
, pp. 579
–587
.14.
Xu
, G.
, Sadeghi
, F.
, and Hoeprich
, M. R.
, 1997
, “Residual Stresses Due to Debris Effects in EHL contacts
,” STLE Tribol. Trans.
, 40
, No. 4
, pp. 613
–620
.15.
Nikas
, G. K.
, Ioannides
, E.
, and Sayles
, R. S.
, 1999
, “Thermal Modeling and Effects From Debris Particles in Sliding/Rolling EHD Line Contacts—A Possible Local Scuffing Mode
,” ASME J. Tribol.
, 121
, No. 2, pp
272
–281
.16.
Languirand
, M. T.
, and Tichy
, J. A.
, 1983
, “The Effects of Translating High Aspect Ratio Particle in a Plane Slider Bearing
,” ASME J. Tribol.
, 105
, pp. 396
–405
.17.
Myllerup, C. M., and Hamrock, B. J., 1993, “Local Effects in Thin Film Lubrication,” Thin Films in Tribology, Proceedings of the 19th Leeds-Lyon Symposium on Tribology, London, United Kingdom, Tribology Series 25, Elsevier, New York, pp. 39–57.
18.
Ju
, Y.
, and Farris
, T. N.
, 1996
, “Spectral Analysis of Two-Dimensional Contact Problems
,” ASME J. Tribol.
, 118
, No. 2
, pp. 320
–328
.19.
Stanley
, H. M.
, and Kato
, T.
, 1997
, “An FFT-Based Method for Rough Surface Contact
,” ASME J. Tribol.
, 119
, No. 3
, pp. 481
–485
.20.
Nogi
, T.
, and Kato
, T.
, 1997
, “Influence of a Hard Surface Layer on the Limit of Elastic Contact: Part I—Analysis Using a Real Surface Model
,” ASME J. Tribol.
, 119
, No. 3
, pp. 493
–500
.21.
Jiang, X., Hua, D. Y., Cheng, H. S., Ai, X., and Lee, S. C., 1998, “A Mixed Elastohydrodynamic Lubrication Model With Asperity Contact,” ASME Paper 98-TRIB-54.
22.
Roelands
, C. J. A.
, Vlugter
, J. C.
, and Waterman
, H. I.
, 1963
, “The Viscosity Temperature Pressure Relationship of Lubricating Oils and its Correlation with Chemical Constitution
,” ASME J. Basic Eng.
, 601
–610
.23.
Dowson, D., and Higginson, G. R., 1966, Elastohydrodynamic Lubrication, Pergamon Press, Tarrytown, NY.
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