Engineering Tribology

Contents......Page 8
Preface......Page 25
Acknowledgements......Page 26
1.1 BACKGROUND......Page 27
1.2 MEANING OF TRIBOLOGY......Page 28
1.3 COST OF FRICTION AND WEAR......Page 31
2.2 OIL VISCOSITY......Page 37
2.3 VISCOSITY TEMPERATURE RELATIONSHIP......Page 39
2.4 VISCOSITY INDEX......Page 41
2.5 VISCOSITY PRESSURE RELATIONSHIP......Page 42
2.6 VISCOSITY-SHEAR RATE RELATIONSHIP......Page 48
2.7 VISCOSITY MEASUREMENTS......Page 50
2.8 VISCOSITY OF MIXTURES......Page 56
2.9 OIL VISCOSITY CLASSIFICATION......Page 57
2.10 LUBRICANT DENSITY AND SPECIFIC GRAVITY......Page 59
2.11 THERMAL PROPERTIES OF LUBRICANTS......Page 60
2.12 TEMPERATURE CHARACTERISTICS OF LUBRICANTS......Page 61
2.13 OPTICAL PROPERTIES OF LUBRICANTS......Page 69
2.15 LUBRICANT IMPURITIES AND CONTAMINANTS......Page 70
2.16 SOLUBILITY OF GASES IN OILS......Page 71
2.17 SUMMARY......Page 74
3.1 INTRODUCTION......Page 77
3.2 MINERAL OILS......Page 78
3.3 SYNTHETIC OILS......Page 83
3.4 EMULSIONS AND AQUEOUS LUBRICANTS......Page 91
3.5 GREASES......Page 92
3.6 LUBRICANT ADDITIVES......Page 107
3.7 SUMMARY......Page 122
4.2 REYNOLDS EQUATION......Page 127
4.3 PAD BEARINGS......Page 142
4.4 CONVERGING-DIVERGING WEDGES......Page 163
4.5 JOURNAL BEARINGS......Page 172
4.6 THERMAL EFFECTS IN BEARINGS......Page 198
4.7 LIMITS OF HYDRODYNAMIC LUBRICATION......Page 208
4.8 HYDRODYNAMIC LUBRICATION WITH NON-NEWTONIAN FLUIDS......Page 210
4.9 REYNOLDS EQUATION FOR SQUEEZE FILMS......Page 217
4.10 POROUS BEARINGS......Page 222
4.11 SUMMARY......Page 223
5.2 NON-DIMENSIONALIZATION OF THE REYNOLDS EQUATION......Page 227
5.3 THE VOGELPOHL PARAMETER......Page 228
5.4 FINITE DIFFERENCE EQUIVALENT OF THE REYNOLDS EQUATION......Page 230
5.5 NUMERICAL ANALYSIS OF HYDRODYNAMIC LUBRICATION IN IDEALIZED JOURNAL AND PARTIAL ARC BEARINGS......Page 236
5.6 NUMERICAL ANALYSIS OF HYDRODYNAMIC LUBRICATION IN A REAL BEARING......Page 242
5.7 SUMMARY......Page 280
6.1 INTRODUCTION......Page 283
6.2 HYDROSTATIC BEARING ANALYSIS......Page 284
6.3 GENERALIZED APPROACH TO HYDROSTATIC BEARING ANALYSIS......Page 292
6.4 OPTIMIZATION OF HYDROSTATIC BEARING DESIGN......Page 293
6.5 AEROSTATIC BEARINGS......Page 301
6.7 STABILITY OF HYDROSTATIC AND AEROSTATIC BEARINGS......Page 304
6.8 SUMMARY......Page 305
7.1 INTRODUCTION......Page 307
7. 2 CONTACT STRESSES......Page 308
7.3 CONTACT BETWEEN TWO ELASTIC SPHERICAL OR SPHEROIDAL BODIES......Page 310
7.4 ELASTOHYDRODYNAMIC LUBRICATING FILMS......Page 331
7.5 MICRO-ELASTOHYDRODYNAMIC LUBRICATION AND MIXED OR PARTIAL EHL......Page 348
7.6 SURFACE TEMPERATURE AT THE CONJUNCTION BETWEEN CONTACTING SOLIDS AND ITS EFFECT ON EHL......Page 353
7.7 TRACTION AND EHL......Page 369
7.8 SUMMARY......Page 378
8.1 INTRODUCTION......Page 383
8.2 LOW TEMPERATURE - LOW LOAD LUBRICATION MECHANISMS......Page 385
8.3 LOW TEMPERATURE - HIGH LOAD LUBRICATION MECHANISMS......Page 386
8.4 HIGH TEMPERATURE - MEDIUM LOAD LUBRICATION MECHANISMS......Page 407
8.5 HIGH TEMPERATURE - HIGH LOAD LUBRICATION MECHANISMS......Page 414
8.7 SUMMARY......Page 430
9.2 LUBRICATION BY SOLIDS......Page 437
9.3 WEAR RESISTANT COATINGS AND SURFACE TREATMENTS......Page 452
9.4 SUMMARY......Page 468
10.2 SURFACES OF SOLIDS......Page 473
10.3 CONTACT BETWEEN SOLIDS......Page 487
10.4 FRICTION AND WEAR......Page 494
REFERENCES......Page 504
11.2 ABRASIVE WEAR......Page 509
11.3 EROSIVE WEAR......Page 535
11.4 CAVITATION WEAR......Page 550
11.5 SUMMARY......Page 552
12.2 MECHANISM OF ADHESION......Page 559
12.3 CONTROL OF THE ADHESIVE WEAR......Page 574
12.4 SUMMARY......Page 576
13.2 CORROSIVE WEAR......Page 579
13.3 OXIDATIVE WEAR......Page 586
13.4 SUMMARY......Page 593
14.1 INTRODUCTION......Page 597
14.2 FATIGUE WEAR DURING SLIDING......Page 598
14.3 FATIGUE WEAR DURING ROLLING......Page 605
14.5 SUMMARY......Page 615
15.1 INTRODUCTION......Page 619
15.2 FRETTING WEAR......Page 620
15.3 MELTING WEAR......Page 635
15.4 WEAR DUE TO ELECTRICAL DISCHARGES......Page 637
15.5 DIFFUSIVE WEAR......Page 638
15.6 IMPACT WEAR......Page 639
15.7 SUMMARY......Page 641
16.2 TRIBOLOGY OF POLYMERS......Page 645
16.3 TRIBOLOGY OF POLYMER COMPOSITES......Page 669
16.4 WEAR AND FRICTION OF CERAMICS......Page 674
16.5 SUMMARY......Page 689
Appendix......Page 695
A1 USER FRIENDLY INTERFACE......Page 696
Index......Page 749