Engineering Tribology

by John Williams

• ISBN13: 9780521609883
• ISBN10: 0521609887
• Format: Paperback
• Copyright: 2005-01-10
• Publisher: Cambridge University Press

Summary

An ideal textbook for a first tribology course and a reference for designers and researchers, Engineering Tribology gives the reader interdisciplinary understanding of tribology including materials constraints. Real design problems and solutions, such as those for journal and rolling element bearings, cams and followers, and heavily loaded gear teeth, elucidate concepts and motivate understanding. The hallmark of this work is the integration of qualitative and quantitative material from a wide variety of disciplines including physics, materials science, surface and lubricant chemistry, with traditional engineering approaches. Reviewers have praised the coverage of: both elastic and plastic stresses at surfaces in contact; the mechanisms of friction, wear and surface distress, and wear; thick pressurized fluid films in both hydrostatic and hydrodynamic bearings; elasto-hydrodynamic lubrication; boundary lubrication mechanisms; dry and marginally lubricated bearing design; the design of rolling contacts and bearings.

Table of Contents

Nomenclature	xiii
Introduction	1	(37)
Tribology	1	(6)
Bearing materials	7	(6)
Lubricants and lubricant properties	13	(14)
A brief history of tribology	27	(9)
Tribology literature	36	(1)
Further reading	36	(2)
Engineering surfaces	38	(35)
The nature of engineering surfaces	38	(1)
Techniques of surface examination	39	(8)
The statistical nature of surfaces	47	(18)
Tribological properties of surfaces	65	(7)
Further reading	72	(1)
Contact between surfaces	73	(59)
Introduction	73	(1)
Geometry of non-conforming surfaces in contact	74	(3)
Surface and subsurface stresses	77	(21)
Surface tractions	98	(7)
Loading beyond the elastic limit	105	(9)
Repeated contacts; the role of residual stresses and shakedown	114	(2)
Contact of rough surfaces	116	(8)
Thermal conditions in sliding contacts	124	(7)
Further reading	131	(1)
The friction of solids	132	(34)
The genesis of solid friction	132	(13)
Static and kinetic friction: stick-slip effects	145	(2)
Measurement of friction	147	(2)
Friction of non-metallic materials	149	(15)
Further reading	164	(2)
Wear and surface damage	166	(34)
Introduction	166	(6)
Mechanisms of wear	172	(20)
Third bodies and wear	192	(6)
Further reading	198	(2)
Hydrostatic bearings	200	(32)
Introduction	200	(1)
Analysis of parallel pocket thrust bearings	201	(15)
Practical bearing designs	216	(3)
Velocity effects in hydrostatic thrust bearings	219	(6)
Hydrostatic journal bearings	225	(4)
Material selection and other design considerations	229	(2)
Further reading	231	(1)
Hydrodynamic bearings	232	(69)
Introduction	232	(1)
Reynolds' equation in one dimension	233	(4)
Plane slider pad bearings with infinite width	237	(11)
Practical pad bearings: design considerations	248	(4)
Reynolds' equation in two dimensions	252	(4)
Lubrication of discs	256	(7)
Plain journal bearings	263	(16)
Thermal effects in lubricated journal bearings	279	(4)
Dynamic effects in hydrodynamic bearings	283	(11)
Lubricated point contacts	294	(3)
Turbulence in hydrodynamic films	297	(3)
Further reading	300	(1)
Gas bearings, non-Newtonian fluids, and elasto-hydrodynamic lubrication	301	(47)
Introduction	301	(1)
Lubrication by gases and vapours; air bearings	302	(20)
Non-Newtonian fluids	322	(4)
Elasto-hydrodynamic lubrication	326	(20)
Further reading	346	(2)
Boundary lubrication and friction	348	(33)
Introduction	348	(2)
The mechanism of boundary lubrication	350	(7)
Elasto-hydrodynamic lubrication on the microscale	357	(3)
Breakdown of lubrication: scuffing	360	(2)
Test methods in boundary lubrication	362	(4)
Solid lubricants	366	(5)
Tribology in metal-working	371	(9)
Further reading	380	(1)
Dry and marginally lubricated contacts	381	(28)
Introduction	381	(1)
Friction in dry sliding	382	(10)
Dry rubbing bearings	392	(3)
Marginally lubricated porous metal bearings	395	(5)
Tribology of sealing	400	(8)
Further reading	408	(1)
Rolling contacts and rolling-element bearings	409	(32)
The rolling contact of elastic solids	409	(19)
Rolling-element bearings	428	(6)
Pneumatic tyres	434	(4)
Repeated loading; shakedown in rolling	438	(2)
Further reading	440	(1)
Problems	441	(16)
Answers to problems	457	(20)
Appendices
1 Skewed cylinders in contact	459	(3)
2 Engineering Sciences Data Unit Guides	462	(2)
3 Conversion factors	464	(2)
4 Characteristic physical properties of materials of tribological interest	466	(2)
5 Hertzian elastic contact	468	(1)
6 Surface temperatures in sliding	469	(1)
7 Hydrostatic lubrication	470	(1)
8 Hydrodynamic lubrication	471	(2)
9 Elasto-hydrodynamic lubrication	473	(2)
10 Greek alphabet	475	(2)
Author index	477	(4)
Subject index	481