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Newtonian quantitative elastohydrodynamic film thickness with linear piezoviscosity |
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| Authors: | Punit Kumar Ivan Krupka |
| Affiliation: | a National Institute of Technology Kurukshetra, Kurukshetra, Haryana 136119, India b Georgia Institute of Technology, Center for High-Pressure Rheology, George W. Woodruff School of Mechanical Engineering, Atlanta, GA 30332-0405, USA c Institute of Machine and Industrial Design, Faculty of Mechanical Engineering, Brno University of Technology, 61669 Brno, Czech Republic |
| Abstract: | Examples are provided for linear pressure-viscosity response at low pressures, which are said to exist in the concentrated contact inlet, including lubricants at high temperature, low viscosity liquids and water/glycol solutions. Full isothermal, Newtonian simulations of the EHL problem reveal film-forming, which is quite similar to that of exponential liquids with the exception of the reduced sensitivity to the Dowson material parameter, G, or the Moes parameter, L. Film thickness formulas are offered, which have been experimentally validated. In a significant departure from most investigations of this kind, the viscosity of the experimental liquids was not adjusted to provide successful comparisons with measurement. |
| Keywords: | Pressure-viscosity behavior EHL Film thickness Rheology |
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