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]
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October 2000
Technical Papers
Debris Effects on EHL Contact
Young S. Kang,
Young S. Kang
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288
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Farshid Sadeghi, Professor,
Farshid Sadeghi, Professor
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288
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Xiaolan Ai
Xiaolan Ai
The Timken Company, Canton, OH 44706
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Young S. Kang
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288
Farshid Sadeghi, Professor
School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288
Xiaolan Ai
The Timken Company, Canton, OH 44706
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division April 12, 1999; revised manuscript received June 16, 2000. Associate Technical Editor: M. M. Khonsari.
J. Tribol. Oct 2000, 122(4): 711-720 (10 pages)
Published Online: June 16, 2000
Article history
Received:
April 12, 1999
Revised:
June 16, 2000
Citation
Kang , Y. S., Sadeghi, F., and Ai, X. (June 16, 2000). "Debris Effects on EHL Contact ." ASME. J. Tribol. October 2000; 122(4): 711–720. https://doi.org/10.1115/1.1314606
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