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A study on the effect of starvation in mixed elastohydrodynamic lubrication |
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| Affiliation: | 1. School of Mechanical & Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia;2. National Key Laboratory of Tribology, Tsinghua University, Beijing 110000, China;3. School of Mechatronics Engineering, China University of Mining and Technology, Xuzhou 221116, China;4. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;1. Univ Lyon, INSA-Lyon, CNRS UMR5259, LaMCoS, F-69621, France;2. Research Center of Solaize (CRES), Total Marketing Services, Solaize, France |
| Abstract: | The effect of starvation in mixed elastohydrodynamic lubrication (EHL) regime is studied. Numerical simulations are conducted for both line and point (elliptical) contacts with the consideration of the surface roughness. The degree of starvation is linked directly to the reduction in the lubricant mass flow rate. Results are presented to gain insight on the influence of starvation on the film thickness as well as the interaction between the surface asperities. Extensive sets of simulation results are used to quantify the effect of starvation in the EHL of rough surfaces. Expressions are developed to predict the percentage of the load carried by the surface asperities (asperity load ratio) as well as the reduction of the central and minimum film thickness in the starved mixed EHL. |
| Keywords: | Starvation degree Starved elastohydrodynamic lubrication Surface roughness Film thickness |
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