The pure squeeze magneto-elastohydrodynamic lubrication (MEHL) motion of circular contacts with an electrically conducting fluid in the presence of a transverse magnetic field is explored under constant load condition. The differences between classical elastohydrodynamic lubrication and MEHL are discussed. The results reveal that the effect of an externally applied magnetic field is equivalent to enhancing effective lubricant viscosity. Therefore, as the Hartmann number increases, the enhancing effect becomes more obvious. Furthermore, the transient pressure profiles, film shapes, normal squeeze velocities, and effective viscosity during the pure squeeze process under various operating conditions are discussed.
Issue Section:
Technical Briefs
1.
Maki
, E. R.
, Kuzma
, D. C.
, and Donnelly
, R. L.
, 1966, “Magnetohydrodynamic Lubrication Flow Between Parallel Plates
,” J. Fluid Mech.
0022-1120, 26
, pp. 537
–543
.2.
Das
, N. C.
, 1998, “A Study of Optimum Load-Bearing Capacity for Slider Bearings Lubricated With Couple Stress Fluids in Magnetic Field
,” Tribol. Int.
0301-679X, 31
(7
), pp. 393
–400
.3.
Malik
, M.
, and Singh
, D. V.
, 1980, “Analysis of Finite Magnetohydrodynamic Journal Bearings
,” Wear
0043-1648, 64
(2
), pp. 273
–280
.4.
Osman
, T. A.
, Nada
, G. S.
, and Safar
, Z. S.
, 2003, “Different Magnetic Models in the Design of Hydrodynamic Journal Bearings Lubricated With Non-Newtonian Ferrofluid
,” Tribol. Lett.
1023-8883, 14
(3
), pp. 211
–223
.5.
Nada
, G. S.
, and Osman
, T. A.
, 2007, “Static Performance of Finite Hydrodynamic Journal Bearings Lubricated by Magnetic Fluids With Couple Stresses
,” Tribol. Lett.
1023-8883, 27
(3
), pp. 261
–268
.6.
Lin
, J. -R.
, 2001, “Magneto-Hydrodynamic Squeeze Film Characteristics Between Annular Disks
,” Ind. Lubr. Tribol.
0036-8792, 53
(2
), pp. 66
–71
.7.
Lu
, R. -F.
, Chien
, R. -D.
, and Lin
, J. -R.
, 2006, “Effects of Fluid Inertia in Magneto-Hydrodynamic Annular Squeeze Films
,” Tribol. Int.
0301-679X, 39
(3
), pp. 221
–226
.8.
Christensen
, H.
, 1970, “Elastohydrodynamic Theory of Spherical Bodies in Normal Approach
,” ASME J. Lubr. Technol.
0022-2305, 92
(1
), pp. 145
–154
.9.
Lee
, K. M.
, and Cheng
, H. S.
, 1973, “The Pressure and Deformation Profiles Between Two Normally Approaching Lubricated Cylinders
,” ASME J. Lubr. Technol.
0022-2305, 95
(3
), pp. 308
–317
.10.
Conway
, H. D.
, and Lee
, H. C.
, 1975, “Impact of a Lubricated Surface by a Sphere
,” ASME J. Lubr. Technol.
0022-2305, 74
(4
), pp. 613
–615
.11.
Yang
, P. R.
, and Wen
, S. Z.
, 1991, “Pure Squeeze Action in an Isothermal Elastohydrodynamic Lubricated Spherical Conjunction, Part 1: Theory and Dynamic Load Results
,” Wear
0043-1648, 142
(1
), pp. 1
–16
.12.
Yang
, P. R.
, and Wen
, S. Z.
, 1991, “Pure Squeeze Action in an Isothermal Elastohydrodynamic Lubricated Spherical Conjunction, Part 2: Constant Speed and Constant Load Results
,” Wear
0043-1648, 142
(1
), pp. 17
–30
.13.
Dowson
, D.
, and Wang
, D.
, 1994, “An Analysis of the Normal Bouncing of a Solid Elastic Ball on an Oily Plate
,” Wear
0043-1648, 179
(1–2
), pp. 29
–37
.14.
Safa
, M. M. A.
, and Gohar
, R.
, 1986, “Pressure Distribution Under a Ball Impacting a Thin Lubricant Layer
,” ASME J. Tribol.
0742-4787, 108
(3
), pp. 372
–376
.15.
Larsson
, R.
, and Högund
, E.
, 1994, “Elastohydrodynamic Lubricated at Pure Squeeze Action
,” Wear
0043-1648, 179
, pp. 39
–43
.16.
Larsson
, R.
, and Högund
, E.
, 1995, “Numerical Simulation of a Ball Impacting and Rebounding a Lubricated Surface
,” ASME J. Tribol.
0742-4787, 117
(1
), pp. 94
–102
.17.
Chu
, H. M.
, Li
, W. L.
, and Chen
, M. D.
, 2006, “Elastohydrodynamic Lubrication of Circular Contacts at Pure Squeeze Motion With Non-Newtonian Lubricants
,” Tribol. Int.
0301-679X, 39
(9
), pp. 897
–905
.18.
Chu
, L. M.
, Li
, W. L.
, Hsu
, H. C.
, and Chang
, Y. P.
, 2009, “Magneto-Elastohydrodynamic Lubrication of Circular Contacts at Impact Loading
,” Tribol. Int.
0301-679X, 42
(2
), pp. 333
–339
.19.
Roelands
, C. J. A.
, Vlugter
, J. C.
, and Watermann
, H. I.
, 1963, “The Viscosity Temperature Pressure Relationship of Lubricating Oils and Its Correlation With Chemical Constitution
,” ASME J. Basic Eng.
0021-9223, 85
, pp. 601
–606
.20.
Dowson
, D.
, and Higginson
, G. R.
, 1966, Elastohydrodynamic Lubrication
, Pergamon
, Oxford, UK
, pp. 88
–92
.Copyright © 2010
by American Society of Mechanical Engineers
You do not currently have access to this content.
