High Pressure Rheology for Quantitative Elastohydrodynamics

Scott Bair received his Ph.D. in mechanical engineering and is currently a Principal Research Engineer and Director at the Center for High-Pressure Rheology at the Georgia Institute of Technology, USA. In 2009, he was the recipient of the International Award for the highest honor given by the Society of Tribologists and Lubrication Engineers. His main research areas are tribology, rheology, properties of liquids at high pressure, and machine design.

Chapter 1. An Introduction to Elastohydrodynamic Lubrication1.1 Lubrication1.2 Concentrated Contact Lubrication1.3 Full Elastohydrodynamic Lubrication1.4 Experimental Elastohydrodynamics1.5 ConclusionChapter 2. An Introduction to the Rheology of Polymeric Liquids2.1 Background2.2 The Newtonian Model2.3 Material Functions for Polymeric Liquids2.4 Rheological Models2.5 Time-Temperature-Pressure Superposition2.6 Liquid FailureChapter 3. General High-Pressure Experimental Techniques3.1 Background3.2 Pressure Containment3.3 Closures3.4 Feed-throughs3.5 Pressure Generation and Measurement3.6 Hydrostatic Media and Volume CompensationChapter 4. Compressibility and the Equation of State4.1 Background4.2 PVT Measurement Techniques and Results4.3 Empirical Equations of StateChapter 5. The Pressure and Temperature Dependence of the Low-Shear Viscosity5.1 Background5.2 High-Pressure Viscometers5.3 General Pressure-Viscosity Response and Results for Pure Organic Liquids and LubricantsChapter 6. Models for the Temperature and Pressure Dependence of the Low-Shear Viscosity6.1 Introduction6.2 Models for the Temperature-Viscosity Response6.3 Pressure Fragility and Empirical Models for High Pressure Behavior6.4 The Pressure-Viscosity Coefficient and Empirical Models for Low Pressure Behavior6.5 Empirical Models for Large Pressure Intervals6.6 Models Based on Free Volume Theory6.7 Generalized Temperature-Pressure-Viscosity Models6.8 Multi Component SystemsChapter 7. Measurement Techniques for the Shear Dependence of Viscosity at Elevated Pressure7.1 Introduction7.2 Phenomena Producing Behavior Similar to Shear-Thinning7.3 Rheometers for High PressureChapter 8. The Shear Dependence of Viscosity at Elevated Pressure8.1 Introduction8.2 Normal Stress Differences at Elevated Pressures8.3 The Origin of Non-Newtonian Behavior in Low-Molecular-Weight Liquids at Elevated Pressures8.4 Time-Temperature-Pressure Superposition8.5 The Competition between Thermal Softening and Shear-Thinning8.6 Multi Component Systems8.7 The Power-Law Exponent and the Second Newtonian ViscosityChapter 9. Glass Transition and Related Transitions in Liquids under Pressure 9.1 Measurements of Glass Transition at Elevated Pressure9.2 Measurements of Dielectric Transition at Elevated Pressure9.3 The Transitions as Isoviscous States 9.4 The Pressure Variation of Viscosity across the TransitionChapter 10. Shear Localization, Slip and the Limiting Stress10.1 Introduction10.2 Measurements of Rate Independent Shear Stress10.3 Flow Visualization of Shear Bands10.4 Mohr-Coulomb Failure Criterion 10.5 Change of Character of the Piezoviscous Navier-Stokes Equations10.6 Thermal Localization, Adiabatic Shear Bands10.7 Interfacial SlipChapter 11. The Reynolds Equation11.1 Background11.2 Reynolds Equations for Generalized Newtonian FluidsChapter 12. Applications to Elastohydrodynamics12.1 Introduction12.2 Film Thickness for Shear Thinning Liquids12.3 The Calculation of Traction from Material Properties