A full numerical analysis is carried out to simulate the thermal elastohydrodynamic lubrication (TEHL) of an eccentric-tappet pair. Comparisons between thermal and isothermal results are given to reveal the role of the thermal effect. Under various eccentricities, the influences of two surfaces moving in opposite directions on pressure and film thickness profiles are analyzed and explained by the mechanism of the temperature-viscosity wedge. Pressure and film thickness profiles, the temperature and velocity distributions at zero entraining velocity are discussed fully. Particular analyses are given on the entrapped immobile surface layers that influence the velocity distribution at zero entraining velocity. Furthermore, in a working cycle, variations of central and minimum film thicknesses and frictional coefficients, under different eccentricities, are discussed.
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October 2003
Technical Papers
A Numerical Analysis for TEHL of Eccentric-Tappet Pair Subjected to Transient Load
J. Wang,
J. Wang
Department of Mechanical Engineering, Qingdao Institute of Architecture and Engineering, Qingdao 266033, P. R. China
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P. Yang
P. Yang
Department of Mechanical Engineering, Qingdao Institute of Architecture and Engineering, Qingdao 266033, P. R. China
Search for other works by this author on:
J. Wang
Department of Mechanical Engineering, Qingdao Institute of Architecture and Engineering, Qingdao 266033, P. R. China
P. Yang
Department of Mechanical Engineering, Qingdao Institute of Architecture and Engineering, Qingdao 266033, P. R. China
Contributed by the Tribology Division for publication in the ASME JOURNAL OF TRIBOLOGY. Manuscript received by the Tribology Division May 8, 2002; revised manuscript received March 18, 2003. Associate Editor: C. H. Venner.
J. Tribol. Oct 2003, 125(4): 770-779 (10 pages)
Published Online: September 25, 2003
Article history
Received:
May 8, 2002
Revised:
March 18, 2003
Online:
September 25, 2003
Citation
Wang , J., and Yang, P. (September 25, 2003). "A Numerical Analysis for TEHL of Eccentric-Tappet Pair Subjected to Transient Load ." ASME. J. Tribol. October 2003; 125(4): 770–779. https://doi.org/10.1115/1.1576425
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