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RISThe Pressure-Viscosity Coefficient of a Perfluorinated Polyether Over a Wide Temperature Range
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An unbranched perfluoropolyether is the current ball bearing lubricant for deep space flight. We report measurements of viscosity to moderate pressures for the calculation of pressure-viscosity ...
Friction in Lubricated Concentrated Contact
Publisher: The American Society of Mechanical Engineers (ASME)
Actual Eyring Models for Thixotropy and Shear-Thinning: Experimental Validation and Application to EHD
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The Eyring sinh law is presently the most well-accepted model for shear-thinning of EHD lubricants at high pressure. It was, however, not accepted for this purpose by Eyring, who found it to ...
Discussion: “Quantitative Comparisons Between Measured and Solved EHL Dimples in Point Contacts,” (Yang, P., Kaneta, M., and Masuda, S., 2003, ASME J. of Tribology, 125(1), pp. 210–214)
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The authors have produced a compelling argument to explain EHL dimple formation as resulting from a temperature-viscosity effect. I believe that their explanation is correct. They have solved ...
A Note on the Use of Roelands Equation to Describe Viscosity for EHD Hertzian Zone Calculations
Publisher: The American Society of Mechanical Engineers (ASME)
Elastohydrodynamic Film Forming With Shear Thinning Liquids
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recent advances in high pressure rheometry have elucidated the shear response of liquid lubricants at the high shear stress characteristic of the traction generating region of lubricated concentrated ...
A Scaling Parameter and Function for the Accurate Correlation of Viscosity With Temperature and Pressure Across Eight Orders of Magnitude of Viscosity
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Quantitative calculations of film thickness and friction in elastohydrodynamic lubrication will require that the low-shear viscosity, μ, be described with far greater accuracy than it is today. ...
Normalized Ashurst-Hoover Scaling and a Comprehensive Viscosity Correlation for Compressed Liquids
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The recent move toward physics-based elastohydrodynamics promises to yield advances in the understanding of the mechanisms of friction and film generation that were not possible a few years ago. ...
Discussion: “Modeling of Film Thickness and Traction in a Variable Ratio Traction Drive Rig,” (Sharif, K. J., Evans, H. P., Snidle, R. W., and Newall, J. P., 2004, ASME J. of Tribology, 126(1), pp. 92–104)
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Ordinary shear-thinning affects EHL film thickness by reducing the central thickness from the theoretical Newtonian value 1 and ordinary shear-thinning affects traction in point contacts by shifting ...
Shear Strength Measurements of Lubricants at High Pressure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Measurements of lubricant shear rheological behavior in the amorphous solid region and near the liquid-solid transition are reported on three lubricants under pressure. Elastic, plastic and viscous ...