COVID-19 Update: We are currently shipping orders daily. However, due to transit disruptions in some geographies, deliveries may be delayed. To provide all customers with timely access to content, we are offering 50% off Science and Technology Print & eBook bundle options. Terms & conditions.
High Pressure Rheology for Quantitative Elastohydrodynamics - 1st Edition - ISBN: 9780444522436, 9780080475301

High Pressure Rheology for Quantitative Elastohydrodynamics

1st Edition

Author: Scott Bair
eBook ISBN: 9780080475301
Hardcover ISBN: 9780444522436
Imprint: Elsevier Science
Published Date: 6th March 2007
Page Count: 260
Sales tax will be calculated at check-out Price includes VAT/GST
Price includes VAT/GST

Institutional Subscription

Secure Checkout

Personal information is secured with SSL technology.

Free Shipping

Free global shipping
No minimum order.


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.

Key Features

  • Presents the property relations required for a quantitative calculation of the tribological behaviour of lubricated concentrated contacts.
    * Details of high-pressure experimental techniques.
    * Complete description of the pressure and temperature dependence of viscosity for high pressures.
    * Some little-known limitations on EHL modelling.


For engineers and researchers concerned with high-pressure lubrication

Table of 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


No. of pages:
© Elsevier Science 2007
6th March 2007
Elsevier Science
eBook ISBN:
Hardcover ISBN:

About the Author

Scott Bair

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.

Affiliations and Expertise

Georgia Institute of Technology, USA

Ratings and Reviews