Description Computational elastohydrodynamics, a part of tribology, has existed happily enough for about fifty years without the use of accurate models
for the rheology of the liquids used as lubricants. For low molecular weight liquids, such as low viscosity mineral oils, it has been
possible to calculate, with precision, the film thickness in a concentrated contact provided that the pressure and temperature are relatively
low, even when the pressure variation of viscosity is not accurately modelled in detail. Other successes have been more qualitative
in nature, using effective properties which come from the fitting of parameters used in calculations to experimental measurements of
the contact behaviour, friction or film thickness. High Pressure Rheology for Quantitative Elastohydrodynamics is
intended to provide a sufficiently accurate framework for the rheology of liquids at elevated pressure that it may be possible for computational
elastohydrodynamics to discover the relationships between the behaviour of a lubricated concentrated contact and the measurable properties
of the liquid lubricant. The required high-pressure measurement techniques are revealed in detail and data are presented for chemically
well-defined liquids that may be used as quantitative reference materials.
Audience
For engineers and researchers concerned with high-pressure lubrication
Contents Chapter 1. An Introduction to Elastohydrodynamic Lubrication
1.1 Lubrication
1.2 Concentrated Contact Lubrication
1.3 Full Elastohydrodynamic Lubrication
1.4 Experimental Elastohydrodynamics
1.5 Conclusion
Chapter 2. An Introduction to the Rheology
of Polymeric Liquids
2.1 Background
2.2 The Newtonian Model
2.3 Material Functions for Polymeric Liquids
2.4 Rheological
Models
2.5 Time-Temperature-Pressure Superposition
2.6 Liquid Failure
Chapter 3. General High-Pressure Experimental Techniques
3.1 Background
3.2 Pressure Containment
3.3 Closures
3.4 Feed-throughs
3.5 Pressure Generation and Measurement
3.6 Hydrostatic Media and Volume Compensation
Chapter 4. Compressibility and the Equation of State
4.1 Background
4.2 PVT Measurement Techniques and Results
4.3 Empirical Equations of State
Chapter 5. The Pressure and Temperature Dependence
of the Low-Shear Viscosity
5.1 Background
5.2 High-Pressure Viscometers
5.3 General Pressure-Viscosity Response and
Results for Pure Organic Liquids and Lubricants
Chapter 6. Models for the Temperature and Pressure Dependence of the Low-Shear
Viscosity
6.1 Introduction
6.2 Models for the Temperature-Viscosity Response
6.3 Pressure Fragility and Empirical
Models for High Pressure Behavior
6.4 The Pressure-Viscosity Coefficient and Empirical Models for Low Pressure Behavior
6.5
Empirical Models for Large Pressure Intervals
6.6 Models Based on Free Volume Theory
6.7 Generalized Temperature-Pressure-Viscosity
Models
6.8 Multi Component Systems
Chapter 7. Measurement Techniques for the Shear Dependence of Viscosity at Elevated Pressure
7.1 Introduction
7.2 Phenomena Producing Behavior Similar to Shear-Thinning
7.3 Rheometers for High Pressure
Chapter
8. The Shear Dependence of Viscosity at Elevated Pressure
8.1 Introduction
8.2 Normal Stress Differences at Elevated Pressures
8.3 The Origin of Non-Newtonian Behavior in Low-Molecular-Weight Liquids at Elevated Pressures
8.4 Time-Temperature-Pressure
Superposition
8.5 The Competition between Thermal Softening and Shear-Thinning
8.6 Multi Component Systems
8.7 The Power-Law
Exponent and the Second Newtonian Viscosity
Chapter 9. Glass Transition and Related Transitions in Liquids under Pressure
9.1
Measurements of Glass Transition at Elevated Pressure
9.2 Measurements of Dielectric Transition at Elevated Pressure
9.3 The
Transitions as Isoviscous States
9.4 The Pressure Variation of Viscosity across the Transition
Chapter 10. Shear Localization,
Slip and the Limiting Stress
10.1 Introduction
10.2 Measurements of Rate Independent Shear Stress
10.3 Flow Visualization
of Shear Bands
10.4 Mohr-Coulomb Failure Criterion
10.5 Change of Character of the Piezoviscous Navier-Stokes Equations
10.6 Thermal Localization, Adiabatic Shear Bands
10.7 Interfacial Slip
Chapter 11. The Reynolds Equation
11.1 Background
11.2 Reynolds Equations for Generalized Newtonian Fluids
Chapter 12. Applications to Elastohydrodynamics
12.1 Introduction
12.2 Film Thickness for Shear Thinning Liquids
12.3 The Calculation of Traction from Material Properties
Books and book related electronic products are priced in US dollars (USD), euro (EUR), and Great Britain Pounds (GBP). USD prices apply to the Americas and Asia Pacific. EUR prices apply in Europe and the Middle East. GBP prices apply to the UK and all other countries.
Home | Elsevier Sites | Privacy Policy | Terms and Conditions | Feedback | Site Map | A Reed Elsevier Company