Fundamentals of fluid film lubrication / Mihir Kumar Ghosh, Bankim Chandra Majumdar, Mihir Sarangi.

Format:

Book

Author/Creator:

Ghosh, Mihir Kumar, author.

Majumdar, Bankim Chandra, author.

Sarangi, Mihir, author.

Series:

McGraw-Hill's AccessEngineering

Language:

English

Subjects (All):

Fluid-film bearings.

Elastohydrodynamic lubrication.

Genre:

Electronic books.

Physical Description:

1 online resource

Edition:

First edition.

Place of Publication:

New York, N.Y. : McGraw-Hill Education, [2014]

Language Note:

In English.

System Details:

text file PDF

Summary:

Written by global experts in the field, this in-depth engineering resource discusses the theory, design, analysis, and application of fluid film lubrication, providing proven methods for reducing friction in rotating machinery components. The book thoroughly addresses all aspects of the topic, from viscosity and rotor-bearing dynamics to elastohydrodynamic lubrication and fluid inertia effects. Fully worked examples, analytical and numerical methods of solutions, practice problems, and detailed illustrations are included in this authoritative reference.

Contents:

Preface

C. Acknowledgements

D. List of symbols

1. Introduction

History of lubrication

History of friction and wear

Regimes of lubrication

Hydrodynamic lubrication

Hydrostatic or externally pressurized lubrication

Elastohydrodynamic lubrication

Squeeze film lubrication

Partial and mixed lubrication

Boundary lubrication and lubrication by solid lubricants

Micro and nano tribology

Biotribology

Tribology and economic gain

Summary

References

2. Viscosity and rheology of lubricants

Introduction

Newtonian behavior of fluids

Non-newtonian fluids

Units of viscosity

Pressure?temperature effects on viscosity

Viscosity grades of oils

Viscosity index

Viscosity measurement

Chemistry of lubricants

3. Mechanics of lubricant films and basic equations

Momentum equations

Stress?strain relationship for fluids

Navier?stokes equations

Continuity equation

Energy equation

Reynolds equation

Lubricant flow

Shear forces

Reynolds equation assumptions justified

Derivation of thermal reynolds equation

Reynolds equation for lubrication with non-newtonian fluids

Reynolds equation for power law fluids

Examples of slow viscous flow

Examples

Problems

4. Hydrodynamic lubrication

Hydrodynamic journal bearings

Long bearing solution

Boundary conditions

Short bearing solution

Oil flow

Hydrodynamic thrust bearings

5. Finite bearings

Analytical solution

Numerical solution

Cavitation and cavitation boundary conditions

6. Thermohydrodynamic analysis of fluid film bearings

Thermal analysis of sector-shaped tilting pad thrust bearings

Thermohydrodynamic analysis of journal bearings

Solution procedure

Thermoelastic deformation of shaft?bush system using finite element method

Adiabatic solution for thermohydrodynamic lubrication problem in journal bearing

Thermohydrodynamic analysis using lobatto quadrature method

Appendix 6.1

7. Design of hydrodynamic bearings

Practical considerations

Bearing materials

Bearing design

8. Dynamics of fluid film bearings

Derivation of reynolds equation for journal bearing under dynamic condition

Dynamics of rotor-bearings systems

Stiffness and damping coefficients

Stability of rigid rotors supported on fluid film bearings

Rotor instability: nonlinear analysis

Dynamically loaded bearings: nonlinear analysis

Squeeze film damper

9. Externally pressurized lubrication

Circular step externally pressurized thrust bearing

Externally pressurized multirecess journal bearing with short sills

Multirecess externally pressurized journal bearings with large sill dimensions

A general analysis of dynamic characteristics of multirecess externally pressurized journal bearings with large sills

Analysis of fluid seals

10. Fluid inertia effects and turbulence in fluid film lubrication

Fluid inertia effects in lubrication

Fluid inertia effect in thrust bearings

Performance of circular step hydrostatic thrust bearing including centrifugal inertia and using bubbly lubricant

Reynolds equation for journal bearings including fluid inertia effects

Influence of temporal inertia on the performance of journal bearings

Temporal inertia effect on the dynamic performance of multi-recess hydrostatic journal bearing

Theory of turbulent lubrication

Fluctuations and average values in turbulent flow

Momentum equations and reynolds stresses for an incompressible flow

Turbulent lubrication theories

Derivation of reynolds equation for turbulent lubrication

Appendix 10.1

Appendix 10.2

11. Gas-lubricated bearings

Governing equations

Limiting solution

Infinitely long plane slider

Finite journal bearings

Externally pressurized gas bearings

Journal bearings

Porous gas bearings

Circular porous thrust bearing

Dynamic characteristics of gas-lubricated bearings

Whirl instability of gas bearings

12. Hydrodynamic lubrication of rolling contacts

Lubrication of rolling rigid cylinders

Isoviscous lubrication of rigid spherical bodies in rolling

Squeeze film lubrication in nonconformal contacts

Effect of squeeze motion on the lubrication of rigid solids

Hydrodynamics of rigid point contacts in combined rolling and normal motion

13. Elastohydrodynamic lubrication

Line contact analysis

Point contact analyses

Different regimes in ehl contacts

Mixed lubrication

14. Vibration analysis with lubricated ball bearings

Rotor supported on lubricated ball bearings

Nonlinear structural vibration analysis in lubricated ball bearings

15. Thermal effect in rolling?sliding contacts

Thermal analysis of rigid rolling?sliding contacts

Thermal analysis of elastohydrodynamic lubrication of line contacts

Thermal traction and temperature rise in the elastohydrodynamic line contacts

Appendix 15.1.

Notes:

Includes bibliographical references and index.

Electronic reproduction. New York, N.Y. : McGraw Hill, 2014. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.

Description based on cover image and table of contents, viewed on September 18, 2014.

Other Format:

Print version: Fundamentals of fluid film lubrication.

ISBN:

9780071834971 (print-ISBN)

0071834974 (print-ISBN)

OCLC:

892582361

Access Restriction:

Restricted for use by site license.