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TECHNICAL PAPERS

Formation Mechanism of Steady Multi-Dimples in Thermal EHL Point Contacts

[+] Author and Article Information
M. Kaneta, P. Yang

Department of Mechanical and Control Engineering, Kyushu Institute of Technology, Sensuicho, Tobata, Kitakyushu 804-8550, Japan

J. Tribol 125(2), 241-251 (Mar 19, 2003) (11 pages) doi:10.1115/1.1506318 History: Received June 28, 2001; Revised July 02, 2002; Online March 19, 2003
Copyright © 2003 by ASME
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References

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Yang,  P., Qu,  S., Chang,  Q., and Guo,  F., 2001, “On the Theory of Thermal Elastohydrodynamic Lubrication at High Slide-Roll Ratios—Line Contact Solution,” ASME J. Tribol., 123, pp. 36–41.
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Cameron,  A., 1951, “Hydrodynamic Lubrication of Rotating Disks in Pure Sliding, A New Type of Oil Film Formation,” J. Inst. Pet., 37, pp. 471–485.
Cameron,  A., 1958, “The Viscosity Wedge,” ASLE Trans., 1, pp. 248–253.
Yang,  P., Qu,  S., Kaneta,  M., and Nishikawa,  H., 2001, “Formation of Steady Dimples in Point TEHL Contacts,” ASME J. Tribol., 123, pp. 42–49.
Foord, C. A., Wedeven, L. D., Westlake, F. J., and Cameron, A., 1969/1970, “Optical Elastohydrodynamics,” Proc. Institution of Mechanical Engineers, Part 1, 184 (28), pp. 487–505.
Yang,  P., and Wen,  S., 1990, “A Generalized Reynolds Equation for Non-Newtonian Thermal Elastohydrodynamic Lubrication,” ASME J. Tribol., 112, pp. 631–636.
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Figures

Grahic Jump Location
Schematic diagram of the experimental apparatus
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Interferograms and film profiles obtained experimentally, pH=0.36 GPa,R=38.1 mm,G=6271, and W=5.77×10−7
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Time sequence of interferograms obtained experimentally, pH=0.36 GPa,R=38.1 mm,U=1.34×10−11,G=6271, and W=5.77×10−7
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Interferograms and film profiles obtained experimentally, pH=0.30 GPa,R=38.1 mm,G=6318, and W=3.46×10−7
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Theoretical thermal EHL results under pure-sliding conditions, pH=0.36 GPa,R=50 mm,G=3978, and W=6.02×10−7
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Theoretical thermal EHL results under pure-sliding conditions, pH=0.30 GPa,R=50 mm,G=3978, and W=3.48×10−7
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Effect of the slide-roll ratio on the formation of multi-dimples, pH=0.36 GPa,R=50 mm,Ue=2×10−11,G=3978, and W=6.02×10−7
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Pressure and film thickness surfaces for the 3-dimple solution shown in Fig. 4(a), pH=0.36 GPa,R=50 mm,Ue=1.25×10−11,G=3978, and W=6.02×10−7; (a) pressure distribution, (b) film thickness distribution
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Comparison between the compressible and incompressible solutions, pH=0.36 GPa,R=50 mm,Ue=2.0×10−11,G=3978, and W=6.02×10−7
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Comparison between the 4-level and 5-level solutions, pH=0.36 GPa,R=50 mm,Ue=2.0×10−11,G=3978, and W=6.02×10−7
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Pressure surfaces after the first and last W cycles for an isothermal solution with a step-function as the initial pressure, Ue=2.0×10−11,G=5000, and W=3.80×10−7: (a) pressure after the first W cycle; and (b) pressure after the last W cycle
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The dependence of the multi-dimples on the kinematic conditions. Case 1: disk-sliding, case 2: ball-sliding, case 3: isothermal. pH=0.36 GPa,R=50 mm,Ue=2.0×10−11,G=3978, and W=6.02×10−7

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