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TECHNICAL PAPERS

Analysis of EHL Circular Contact Start Up: Part I—Mixed Contact Model With Pressure and Film Thickness Results

[+] Author and Article Information
Jiaxin Zhao, Farshid Sadeghi

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288

Michael H. Hoeprich

The Timken Company, Canton, OH 44706

J. Tribol 123(1), 67-74 (Sep 26, 2000) (8 pages) doi:10.1115/1.1332394 History: Received February 03, 2000; Revised September 26, 2000
Copyright © 2001 by ASME
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References

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Lubrecht,  A. A., and Ioannides,  E., 1991, “A Fast Solution of the Dry Contact Problem and the Associated Subsurface Stress Field, Using Multilevel Techniques,” ASME J. Tribol., 113, pp. 128–133.
Stanley,  H. M., and Kato,  T., 1997, “An FFT-Based Method for Rough Surface Contact,” ASME J. Tribol., 119, pp. 481–485.
Ai,  X., and Sawamiphakdi,  K., 1999, “Solving Elastic Contact Between Rough Surfaces as an Unconstrained Strain Energy Minimization by Using CGM and FFT Techniques,” ASME J. Tribol., 121, pp. 639–647.
Liu,  G., and Wang,  Q., 1999, “A Survey of Current Models for Simulating the Contact between Rough Surfaces,” Tribol. Trans., 42, pp. 581–591.
Venner,  C. H., and Lubrecht,  A. A., 1994, “Numerical Simulation of a Transverse Ridge in a Circular EHL Contact Under Rolling/Sliding,” ASME J. Tribol., 116, pp. 751–761.
Xu,  G., and Sadeghi,  F., 1996, “Thermal EHL Analysis of Circular Contacts With Measured Surface Roughness,” ASME J. Tribol., 118, pp. 473–483.
Wedeven,  L. D., and Cusano,  C., 1979, “Elastohydrodynamic Film Thickness Measurements of Artificially Produced Surface Dents and Grooves,” ASLE Trans., 22, pp. 369–381.
Kaneta,  M., Sakai,  T., and Nishikawa,  H., 1992, “Optical Interferometric Observations of the Effects of a Bump on Point Contact EHL,” ASME J. Tribol., 114, pp. 779–784.
Kaneta,  M., Sakai,  T., and Nishikawa,  H., 1993, “Effects of Surface Roughness on Point Contact EHL,” Tribol. Trans., 36, pp. 605–612.
Hua,  D. Y., Qiu,  L., and Cheng,  H. S., 1997, “Modeling of Lubrication in Micro Contact,” Tribol. Lett., 3, pp. 81–86.
Jiang,  X., Hua,  D. Y., Cheng,  H. S., Ai,  X., and Lee,  S. C., 1999, “A Mixed Elastohydrodynamic Lubrication Model With Asperity Contact,” ASME J. Tribol., 121, pp. 481–491.
Hu,  Y., and Zhu,  D., 2000, “A Full Numerical Solution to the Mixed Lubrication in Point Contacts,” ASME J. Tribol., 122, pp. 1–9.
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Venner, C. H., 1991, “Multilevel Solution of the EHL Line and Point Contact Problems,” Ph.D. thesis, University of Twente, Enschede, The Netherlands, ISBN 90-9003974-0.
Zhao,  J., Sadeghi,  F., and Hoeprich,  M. H., 2001, “Analysis of EHL Circular Contact Start Up: Part II—Surface Temperature Rise Model and Results,” ASME J. Tribol., 123, pp. 75–82.

Figures

Grahic Jump Location
Pressure and film thickness at θ=0.0(t=0 s), jump start up
Grahic Jump Location
Pressure and film thickness at θ=0.2(t=1.038×10−5 s), jump start up
Grahic Jump Location
Pressure and film thickness at θ=1.0(t=5.190×10−5 s), jump start up
Grahic Jump Location
Pressure and film thickness at θ=1.8(t=9.342×10−5 s), jump start up
Grahic Jump Location
Pressure and film thickness at θ=2.0(t=1.038×10−4 s), jump start up
Grahic Jump Location
Pressure and film thickness at θ=4.2(t=2.180×10−4 s), jump start up
Grahic Jump Location
Surfaces approach and minimum film thickness during jump start up
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Schematic representation of contact areas during start up
Grahic Jump Location
Relative contact areas and relative contact forces during jump start up
Grahic Jump Location
Pressure and film thickness at θ=0.2(t=1.038×10−5 s), linear start up
Grahic Jump Location
Pressure and film thickness at θ=3.2(t=1.661×10−4 s), linear start up
Grahic Jump Location
Surfaces approach and minimum film thickness during linear start up
Grahic Jump Location
Relative contact areas and relative contact forces during linear start up

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