Bearing Design in Machinery Engineering Tribology and Lubrication

ISBN-10: 0824707036
ISBN-13: 9780824707033
Edition: 2002
Authors: Avraham Harnoy
List price: $297.00
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Book details

List price: $297.00
Copyright year: 2002
Publisher: CRC Press LLC
Publication date: 9/25/2002
Binding: Hardcover
Pages: 664
Size: 6.25" wide x 9.00" long x 1.50" tall
Weight: 2.332

Preface
Symbols
Classification and Selection of Bearings
Introduction
Dry and Boundary Lubrication Bearings
Hydrodynamic Bearing
Hydrostatic Bearing
Magnetic Bearing
Rolling Element Bearings
Selection Criteria
Bearings for Precision Applications
Noncontact Bearings for Precision Application
Bearing Subjected to Frequent Starts and Stops
Example Problems
Lubricant Viscosity
Introduction
Simple Shear Flow
Boundary Conditions of Flow
Viscosity Units
Viscosity--Temperature Curves
Viscosity Index
Viscosity as a Function of Pressure
Viscosity as a Function of Shear Rate
Viscoelastic Lubricants
Fundamental Properties of Lubricants
Introduction
Crude Oils
Base Oil Components
Synthetic Oils
Greases
Additives to Lubricants
Principles of Hydrodynamic Lubrication
Introduction
Assumptions of Hydrodynamic Lubrication Theory
Hydrodynamic Long Bearing
Differential Equation of Fluid Motion
Flow in a Long Bearing
Pressure Wave
Plane-Slider Load Capacity
Viscous Friction Force in a Plane-Slider
Flow Between Two Parallel Plates
Fluid-Film Between a Cylinder and Flat Plate
Solution in Dimensionless Terms
Basic Hydrodynamic Equations
Navier--Stokes Equations
Reynolds Hydrodynamic Lubrication Equation
Wide Plane-Slider
Fluid Film Between a Flat Plate and a Cylinder
Transition to Turbulence
Cylindrical Coordinates
Squeeze-Film Flow
Long Hydrodynamic Journal Bearing
Introduction
Reynolds Equation for a Journal Bearing
Journal Bearing with Rotating Sleeve
Combined Rolling and Sliding
Pressure Wave in a Long Journal Bearing
Sommerfeld Solution of the Pressure Wave
Journal Bearing Load Capacity
Load Capacity Based on Sommerfeld Conditions
Friction in a Long Journal Bearing
Power Loss on Viscous Friction
Sommerfeld Number
Practical Pressure Boundary Conditions
Short Journal Bearings
Introduction
Short-Bearing Analysis
Flow in the Axial Direction
Sommerfeld Number of a Short Bearing
Viscous Friction
Journal Bearing Stiffness
Design Charts for Finite-Length Journal Bearings
Introduction
Design Procedure
Minimum Film Thickness
Raimondi and Boyd Charts and Tables
Fluid Film Temperature
Peak Temperature in Large, Heavily Loaded Bearings
Design Based on Experimental Curves
Practical Applications of Journal Bearings
Introduction
Hydrodynamic Bearing Whirl
Elliptical Bearings
Three-Lobe Bearings
Pivoted-Pad Journal Bearing
Bearings Made of Compliant Materials
Foil Bearings
Analysis of a Foil Bearing
Foil Bearings in High-Speed Turbines
Design Example of a Compliant Bearing
Hydrostatic Bearings
Introduction
Hydrostatic Circular Pads
Radial Pressure Distribution and Load Capacity
Power Losses in the Hydrostatic Pad
Optimization for Minimum Power Loss
Long Rectangular Hydrostatic Bearings
Multidirectional Hydrostatic Support
Hydrostatic Pad Stiffness for Constant Flow-Rate
Constant-Pressure-Supply Pads with Restrictors
Analysis of Stiffness for a Constant Pressure Supply
Journal Bearing Cross-Stiffness
Applications
Hydraulic Pumps
Gear Pump Characteristics
Flow Dividers
Case Study: Hydrostatic Shoe Pads in Large Rotary Mills
Bearing Materials
Fundamental Principles of Tribology
Wear Mechanisms
Selection of Bearing Materials
Metal Bearings
Nonmetal Bearing Materials
Rolling Element Bearings
Introduction
Classification of Rolling-Element Bearings
Hertz Contact Stresses in Rolling Bearings
Theoretical Line Contact
Ellipsoidal Contact Area in Ball Bearings
Rolling-Element Speed
Elastohydrodynamic Lubrication in Rolling Bearings
Elastohydrodynamic Lubrication of a Line Contact
Elastohydrodynamic Lubrication of Ball Bearings
Force Components in an Angular Contact Bearing
Selection and Design of Rolling Bearings
Introduction
Fatigue Life Calculations
Bearing Operating Temperature
Rolling Bearing Lubrication
Bearing Precision
Internal Clearance of Rolling Bearings
Vibrations and Noise in Rolling Bearings
Shaft and Housing Fits
Stress and Deformation Due to Tight Fits
Bearing Mounting Arrangements
Adjustable Bearing Arrangement
Examples of Bearing Arrangements in Machinery
Selection of Oil Versus Grease
Grease Lubrication
Grease Life
Liquid Lubrication Systems
High-Temperature Applications
Speed Limit of Standard Bearings
Materials for Rolling Bearings
Processes for Manufacturing High-Purity Steel
Ceramic Materials for Rolling Bearings
Rolling Bearing Cages
Bearing Seals
Mechanical Seals
Testing of Friction and Wear
Introduction
Testing Machines for Dry and Boundary Lubrication
Friction Testing Under High-Frequency Oscillations
Measurement of Journal Bearing Friction
Testing of Dynamic Friction
Friction-Testing Machine with a Hydrostatic Pad
Four-Bearings Measurement Apparatus
Apparatus for Measuring Friction in Linear Motion
Hydrodynamic Bearings Under Dynamic Conditions
Introduction
Analysis of Short Bearings Under Dynamic Conditions
Journal Center Trajectory
Solution of Journal Motion by Finite-Difference Method
Friction Characteristics
Introduction
Friction in Hydrodynamic and Mixed Lubrication
Friction of Plastic Against Metal
Dynamic Friction
Modeling Dynamic Friction
Introduction
Dynamic Friction Model for Journal Bearings
Development of the Model
Modeling Friction at Steady Velocity
Modeling Dynamic Friction
Comparison of Model Simulations and Experiments
Case Study: Composite Bearing--Rolling Element and Fluid Film in Series
Introduction
Composite-Bearing Designs
Previous Research in Composite Bearings
Composite Bearing with Centrifugal Mechanism
Performance Under Dynamic Conditions
Thermal Effects
Non-Newtonian Viscoelastic Effects
Introduction
Viscoelastic Fluid Models
Analysis of Viscoelastic Fluid Flow
Pressure Wave in a Journal Bearing
Squeeze-Film Flow
Orthopedic Joint Implants
Introduction
Artificial Hip Joint as a Bearing
History of the Hip Replacement Joint
Materials for Joint Implants
Dynamic Friction
Units and Definitions of Material Properties
Numerical Integration
Bibliography
Index

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