速度对全膜润滑状态下的脂膜厚度的影响
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摘要
研究速度对全膜润滑状态下的脂膜厚度的影响,利用带有光学干涉膜厚测试仪的球碟机对三种不同的油脂进行单点接触实验.实验结果表明膜厚随着速度的变化与"转变速度"有关.速度低于转变速度时,脂膜厚度高于基础油油膜厚度并随着速度提高而变小;速度高于转变速度时,脂膜变厚并逐步与基础油油膜厚度达成一致.测试结果还表明,脂膜厚度与油脂的有效黏度有关,建立了有关处于全膜润滑状态下的脂膜厚度的数学模型,并与测量结果对比后证实了该模型的有效性.
In order to study the effect of speed on the grease film thickness in fully film lubrication conditions,using ball-disc-disc machine with optical interference film thickness tester does the single point contact experiments on three different kinds of oil. The results show that the change trend of grease film thickness is highly related to ‘transition speed'. When speed is lower than that of transition,the grease film thickness decreases as the speed increases. When speed is higher than that of transition,the grease film becomes thicker and gradually reaches consensus with the base oil film thickness. The results also showed that grease film thickness has something with the grease effective viscosity. The paper builds a mathematical model of film thickness in the full film lubrication conditions,after comparing with the measurement results which confirms the validity of the model.
In order to study the effect of speed on the grease film thickness in fully film lubrication conditions,using ball-disc-disc machine with optical interference film thickness tester does the single point contact experiments on three different kinds of oil. The results show that the change trend of grease film thickness is highly related to ‘transition speed'. When speed is lower than that of transition,the grease film thickness decreases as the speed increases. When speed is higher than that of transition,the grease film becomes thicker and gradually reaches consensus with the base oil film thickness. The results also showed that grease film thickness has something with the grease effective viscosity. The paper builds a mathematical model of film thickness in the full film lubrication conditions,after comparing with the measurement results which confirms the validity of the model.
引文
[1]Lugt P M.Modern advancements in lubricating grease technology[J].Tribology International,2016,52:467-477.
[2]Poon S Y.An Experimental Study of Grease in Elastohydrodynamic Lubrication[J].Journal of Lubrication Technology,Trans ASME,1972,94(1):27-34.
[3]Cann P M.Starvation and reflow in a grease-lubricated elastohydrodynamic contact[J].STLE Tribology Transactions,1996,39(3):698-704.
[4]Cann P M,Spikes,H A.Film thickness measurements of lubricating greases under normally starved conditions[J].NLGI Spokesman,1992,56(2):21-27.
[5]Cann P M.Understanding grease lubrication[J].Tribology Series,1996,31:573-581.
[6]Baart P,Lugt P M,Prakash B.Non-Newtonian effects on film formation in grease-lubricated radial lip seals[J].Tribology Transactions,2010,53(3):308-318.
[7]殷玉枫,段全心,吉晓梅,等.滚柱轴承离合器润滑脂膜厚度的计算及分析[J].润滑与密封,2008,33(2):34-39.
[8]张玉萌,温天佑,郭峰.面接触条件下润滑脂流体动压润滑膜的成膜特性[J].润滑与密封,2016,41(1):71-74.
[9]Gon9alves D,Gra9a B,Campos A,et al.On the film thickness behaviour of polymer greases at low and high speeds[J].Tribology International,2015,90:435-444.
[10]Cyriac F,Lugt P M,Bosman R,et al.Effect of Thickener Particle Geometry and Concentration on the Grease EHL Film Thickness at Medium Speeds[J].Triboloy Letters,2016,61:18.
[11]VENGUDUSAMY B,KUHN M,RANKL M,et al.Film Forming Behavior of Greases Under Starved and Fully Flooded EHL Conditions[J].Tribology Transactions,2016,59(1):62-71.
[12]HUANG L,GUO D,LIU X,et al.Effects of nano thickener deposited film on the behaviour of starvation and replenishment of lubricating greases[J],Friction,2016(1):1-11.
[13]HUANG L,GUO D,WEN S.Starvation and Reflow of Point Contact Lubricated with Greases of Different Chemical Formulation[J].Tribology Letters,2014,55:483-492.
[14]HUANG L,GUO D,WEN S,et al.Effects of Slide/Roll Ratio on the Behaviours of Grease Reservoir and Film Thickness of Point Contact[J].Tribology Letters,2014,54:263-271.
[15]Hartl M,Krupka I,Poliscuk R,et al.Thin Film Colorimetric Interferometry[J].Tribology Transactions,2001,44(2):270-276.
[16]Suarez A N.Parameters Affecting the Functionality of Additives in Lubricated Contacts—Effect of Base oil Polarity[D].Sweden:Lule,2010.
[17]Hamrock B J,Dowson D.Elastohydrodynamic lubrication of elliptical contacts formaterials of low elastic modulus 1-fully flooded conjunction[J].ASME Journal of Tribology,1978,100:236-245.
[18]Khonsari M M,Booser B B.Applied Tribology:bearing design and lubrication[M].Netherlands:Springer,2nd edition,2008.
[19]Cousseau T,Bj9rling M,Graca B,et al.Film Thickness in a Ball-on-Disk Contact Lubricated with Greases,Bleed oils and Base Oils[C].Proc.Of the 15th International Conference on Experimental Mechanics,Porto,Portugal,2012.
[20]International Standard[S].Rolling Bearings-Dynamic Load Rating and Rating Life,ISO 281,2007.#
[2]Poon S Y.An Experimental Study of Grease in Elastohydrodynamic Lubrication[J].Journal of Lubrication Technology,Trans ASME,1972,94(1):27-34.
[3]Cann P M.Starvation and reflow in a grease-lubricated elastohydrodynamic contact[J].STLE Tribology Transactions,1996,39(3):698-704.
[4]Cann P M,Spikes,H A.Film thickness measurements of lubricating greases under normally starved conditions[J].NLGI Spokesman,1992,56(2):21-27.
[5]Cann P M.Understanding grease lubrication[J].Tribology Series,1996,31:573-581.
[6]Baart P,Lugt P M,Prakash B.Non-Newtonian effects on film formation in grease-lubricated radial lip seals[J].Tribology Transactions,2010,53(3):308-318.
[7]殷玉枫,段全心,吉晓梅,等.滚柱轴承离合器润滑脂膜厚度的计算及分析[J].润滑与密封,2008,33(2):34-39.
[8]张玉萌,温天佑,郭峰.面接触条件下润滑脂流体动压润滑膜的成膜特性[J].润滑与密封,2016,41(1):71-74.
[9]Gon9alves D,Gra9a B,Campos A,et al.On the film thickness behaviour of polymer greases at low and high speeds[J].Tribology International,2015,90:435-444.
[10]Cyriac F,Lugt P M,Bosman R,et al.Effect of Thickener Particle Geometry and Concentration on the Grease EHL Film Thickness at Medium Speeds[J].Triboloy Letters,2016,61:18.
[11]VENGUDUSAMY B,KUHN M,RANKL M,et al.Film Forming Behavior of Greases Under Starved and Fully Flooded EHL Conditions[J].Tribology Transactions,2016,59(1):62-71.
[12]HUANG L,GUO D,LIU X,et al.Effects of nano thickener deposited film on the behaviour of starvation and replenishment of lubricating greases[J],Friction,2016(1):1-11.
[13]HUANG L,GUO D,WEN S.Starvation and Reflow of Point Contact Lubricated with Greases of Different Chemical Formulation[J].Tribology Letters,2014,55:483-492.
[14]HUANG L,GUO D,WEN S,et al.Effects of Slide/Roll Ratio on the Behaviours of Grease Reservoir and Film Thickness of Point Contact[J].Tribology Letters,2014,54:263-271.
[15]Hartl M,Krupka I,Poliscuk R,et al.Thin Film Colorimetric Interferometry[J].Tribology Transactions,2001,44(2):270-276.
[16]Suarez A N.Parameters Affecting the Functionality of Additives in Lubricated Contacts—Effect of Base oil Polarity[D].Sweden:Lule,2010.
[17]Hamrock B J,Dowson D.Elastohydrodynamic lubrication of elliptical contacts formaterials of low elastic modulus 1-fully flooded conjunction[J].ASME Journal of Tribology,1978,100:236-245.
[18]Khonsari M M,Booser B B.Applied Tribology:bearing design and lubrication[M].Netherlands:Springer,2nd edition,2008.
[19]Cousseau T,Bj9rling M,Graca B,et al.Film Thickness in a Ball-on-Disk Contact Lubricated with Greases,Bleed oils and Base Oils[C].Proc.Of the 15th International Conference on Experimental Mechanics,Porto,Portugal,2012.
[20]International Standard[S].Rolling Bearings-Dynamic Load Rating and Rating Life,ISO 281,2007.#