Mechanism for Controlling Oil Replenishment in Starved Elliptical EHL Contacts

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• 作者：Fadi Ali ; Ivan K?upka ; Martin Hartl
• 关键词：Replenishment ; Elliptical EHL contacts ; Starvation ; Channeling of lubricant flow
• 刊名：Tribology Letters
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：60
• 期：3
• 全文大小：1,012 KB
• 参考文献：1.Chevalier, F., Cann, P.M.E., Colin, F., Dalmaz, G., Lubrecht, A.: Film thickness in starved EHL point contacts. J. Tribol. 120(1), 126-33 (1998)CrossRef
  2.Lubrecht, A.A., Mazuyer, D., Cann, P.M.E.: Starved elastohydrodynamic lubrication theory: application to emulsions and greases. C. R. Acad. Sci. Ser. IV Phys. Astrophys. 2(5), 717-28 (2001)
  3.Yang, P., Wang, J., Kaneta, M.: Thermal and non-Newtonian numerical analyses for starved EHL line contacts. ASME J. Tribol. 128, 282-90 (2006)CrossRef
  4.Wedeven, L.D., Evans, D., Cameron, A.: Optical analysis of ball bearing starvation. Trans. ASME J. Lubn. Technol. 93, 349-63 (1971)CrossRef
  5.Popovici, G.: Effects of lubricant starvation on performance of elasto-hydrodynamically lubricated contacts. PhD thesis, University of Twente (2005)
  6.Venner, C.H., Popovici, G., Lugt, P.M., Organisciak, M.: Film thickness modulations in starved elastohydrodynamically lubricated contacts induced by time-varying lubricant supply. J. Tribol. 130, 041501 (2008)CrossRef
  7.Gershuni, L., Larson, G., Lugt, P.M.: Lubricant replenishment in rolling bearing contacts. Tribol. Trans. 51, 643-51 (2008)CrossRef
  8.Jacod, B., Pubilier, F., Cann, P.M.E., Pubilier, A.A.: An analysis of track replenishment mechanisms in the starved regime. Tribol. Ser. 36, 483-92 (1999)CrossRef
  9.Chiu, Y.: An analysis and prediction of lubricant film starvation in rolling contact systems. ASLE Trans. 17(1), 22-5 (1974)CrossRef
  10.Pemberton, J., Cameron, A.: A mechanism of fluid replenishment in elastohydrodynamic contacts. Wear 37(1), 185-90 (1976)CrossRef
  11.Guangteng, G., Spikes, H.: The role of surface tension and disjoining pressure in starved and parched lubrication. Proc. Inst. Mech. Eng. Part J. J. Eng. Tribol. 210(2), 113-24 (1996)CrossRef
  12.Cann, P.M.E., Damiens, B., Lubrecht, A.A.: The transition between fully flooded and starved regimes in EHL. Tribol. Int. 37(10), 859-64 (2004)CrossRef
  13.Liang, H., Guo, D., Luo, J.: Experimental investigation of lubrication film starvation of polyalphaolefin oil at high speeds. Tribol. Lett. 56(3), 491-00 (2014)CrossRef
  14.Liang, H., Guo, D., Ma, L., Luo, J.: Experimental investigation of centrifugal effects on lubricant replenishment in the starved regime at high speeds. Tribol. Lett. (2015). doi:10.-007/?s11249-015-0526-1
  15.van Zoelen, M.T., Venner, C.H., Lugt, P.M.: Free surface thin layer flow in bearings induced by centrifugal effects. Tribol. Trans. 53(3), 297-07 (2010)CrossRef
  16.van Zoelen, M.T., Venner, C.H., Lugt, P.M.: Free surface thin layer flow on bearing raceways. J. Tribol. 130(2), 1-0 (2008)
  17.Damiens, B., Venner, C.H., Cann, P.M.E., Lubrecht, A.A.: Starved lubrication of elliptical EHD contacts. J. Tribol. 126(1), 105 (2004)CrossRef
  18.Van Zoelen, M.T., Venner, C.H., Lugt, P.M.: Prediction of film thickness decay in starved elastohydrodynamically lubricated contacts using a thin-film layer model. Proc. Inst. Mech. Eng. Part J. J. Eng. Tribol. 223, 541-52 (2009)CrossRef
  19.Cann, P.M.E.: Starved grease lubrication of rolling contacts. Tribol. Trans. 42, 867-73 (1999)CrossRef
  20.Damiens, B., Lubrecht, A.A., Cann, P.M.E.: Influence of cage clearance on bearing lubrication. Tribol. Trans. 47, 2- (2004)CrossRef
  21.Ali, F., K?upka, I., Hartl, M.: Effects of out-of-contact lubricant channeling on friction and film thickness in starved elastohydrodynamic lubrication point contacts. Inst. Mech. Eng. Part J. J. Eng. Tribol. (2015). doi:10.-177/-350650115576943-/span>
  22.Hartl, M., K?upka, I., Poliscuk, R., Liska, M., Molimard, J., Querry, M., Vergne, P.: Thin film colorimetric interferometry. STLE Tribol. Trans. 44, 270-76 (2001)CrossRef
  
• 作者单位：Fadi Ali (1)
  Ivan K?upka (1)
  Martin Hartl (1)
  
  1. Faulty of Mechanical Engineering, Institute of Machine and Industrial Design, Brno University of Technology, Technická 2896/2, 61669, Brno, The Czech Republic
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Tribology, Corrosion and Coatings
  Surfaces and Interfaces and Thin Films
  Theoretical and Applied Mechanics
  Physical Chemistry
  Nanotechnology
  
• 出版者：Springer Netherlands
• ISSN：1573-2711

文摘

Under rolling/sliding conditions of concentrated contacts, lubricant is pushed aside by the rolling element, leading to a depleted track and oil starvation. This study represents an attempt to investigate the effect of controlling oil replenishment within starved elliptical EHL contacts. The controlling of replenishment has been carried out by means of lubricant channeling via external slider with central slot to scrap the displaced lubricant on one of the contacting surfaces. The experiments were carried out for base oils with different viscosities using a spherical roller-on-disk configuration. The performance of lubricant flow control was assessed by measuring the film thickness and friction in the lubricated contact. The results show that the reconditioning of lubricant flow is a helpful method to prevent the occurrence of oil starvation and to improve the tribological performance of elliptical EHL contacts. However, the channeling of lubricant flow to modify the inlet supply of the Hertzian contact depends on operating conditions, the degree of starvation and oil viscosity. Keywords Replenishment Elliptical EHL contacts Starvation Channeling of lubricant flow