Friction and Lubrication in Mechanical Design Episode 1 Part 1 ppsx

[...]... the Film References 11 1 11 3 11 3 11 4 11 5 11 6 11 8 13 5 14 2 15 8 230 246 ix Contents 7 Friction and Lubrication in Rolling/Sliding Contacts 7 .1 Rolling Friction 7.2 Hydrodynamic Lubrication and Friction 7.3 Elastohydrodynamics in Rolling/Sliding Contacts 7.4 Friction in the Elastohydrodynamic Regime 7.5 Domains of Friction in EHD Rolling/Sliding Contacts 7.6 Experimental Evaluation of the Frictional Coefficient... 368 376 377 387 404 411 41 1 412 Contents 10 .3 Rolling Friction References 414 42 1 11 Friction- Induced Sound and Vibration 11 .1 Introduction 11 .2 Frictional Noise Due to Rubbing 11 .3 Effect of Lubrication on Noise Reduction 11 .4 Frictional Noise in Gears 1 1.5 Friction- Induced Vibration and Noise 1 1.6 Procedure for Determination of the Frictional Properties Under Reciprocating Sliding Motion References... page intentionally left blank Contents Preface Unit Conversion Table 1 Introduction 1. 1 Historical Overview 1. 2 Theories of Dry Friction 1. 3 Boundary Lubrication Friction 1. 4 Friction in Fluid Film Lubrication 1. 5 Frictional Resistance in Elastohydrodynamic Contacts References 11 1 xi 1 1 4 7 9 14 17 22 2 The Contact Between Smooth Surfaces 2 .1 Introduction 2.2 Design Relationships for Elastic Bodies in. .. Partition and Transient Temperature Distribution in Layered Lubricated Contacts 5.6 Dimensionless Relationships for Transient Temperature and Heat Partition References 12 1 12 1 12 1 12 3 12 7 6 Design of Fluid Film Bearings 6 .1 Hydrodynamic Journal Bearings 6.2 Design Systems 6.3 Thermodynamic Effects on Bearing Performance 6.4 Thermohydrodynamic Lubrication Analysis 16 1 16 1 18 7 209 Incorporating Thermal... activities in this highly interdisciplinary subject, is now attaining a prominent place among the sciences [ 13 1 It continues to present challenges for those who are working in it in response to the ever increasing interest of the mechanical and electronic industries to learn more about the causes of the energy losses due to friction and wear [14 ] The enormous energy loss in tribological sinks in the United... 12 Surface Coating 12 .1 Introduction 12 .2 Coating Processes 12 .3 Types of Coatings 12 .4 Diamond Surface Coatings 12 .5 Failure Mechanisms of Surface Coatings 12 .6 Typical Applications of Surface Coatings 12 .7 Simplified Method for Calculating the Maximum Temperature Rise in a Coated Solid Due to a Moving Heat Source 12 .8 Thermal Stress Considerations References 453 453 453 458 466 470 47 1 44 1 45 1. .. 482 48 5 13 Some Experimental Studies in Friction, Lubrication, Wear, and Thermal Shock 13 .1 Frictional Interface Behavior Under Sinusoidal Force Excitation 13 .2 Friction Under Impulsive Loading 13 .3 Viscoelastic Behavior of Frictional Hertzian Contacts Under Ramp-Type Loads 13 .4 Film Pressure in Reciprocating Slider Bearings 13 .5 Effect of Lubricant Properties on Temperature and Wear in Sliding Concentrated... Damage Surface Failure in Gears Rolling Element Bearings Surface Temperature, Thermal Stress, and Wear in Brakes Water Jet Cutting as an Application of Erosion Wear Frictional Resistance in Soil Under Vibration Wear in Animal Joints Heat Generation and Surface Durability of RampBall Clutches References 10 Friction in Micromechanisms 10 .1 Introduction 10 .2 Static Friction 31 1 312 317 327 328 332 332 333... findings of Petrov (18 36 -19 20) and Tower (18 45 -19 04) Petrov reported in 18 83 [5] that viscosity is the most important fluid property in film lubrication, and not density as previously thought He also concluded that frictional losses in full film lubrication are the result of viscous shearing of the film The experimental studies published by Tower in 18 83 and 18 85 [6, 71 showed that the load carrying... Contacts 13 .6 The Effect of Repeated Thermal Shock on Bending Fatigue of Steel References Author Index Subject Index 488 488 497 506 515 519 527 533 537 545 Unit Conversion Table 1 inch = 25.4mm = 2.54cm = 0.0254 meter [m] 1 foot = 0.3048m 1 mile = 16 09 m = 1. 609 km 1 lb = 4.48 newton [NI = 0.455 kg 1 lb-ft (moment) = 1. 356 N-m I lb-ft (work) = 1. 356 joule [J] 1 lb-ft/sec = 1/ 356 watt [W] 1 hp = 0.746kW 1 . 90 97 10 0 10 0 10 0 10 5 11 1 11 3 11 3 11 4 11 5 11 6 11 8 12 1 12 1 12 1 12 3 12 7 13 5 14 2 15 8 16 1 16 1 18 7 209 230 246 Contents 7 Friction and Lubrication in Rolling/Sliding Contacts. 10 Friction in Micromechanisms 10 .1 Introduction 10 .2 Static Friction 41 1 41 1 412 Con tents 10 .3 Rolling Friction References 11 Friction- Induced Sound and Vibration 1 1 .1 Introduction. Introduction 11 .2 Frictional Noise Due to Rubbing 11 .3 Effect of Lubrication on Noise Reduction 11 .4 Frictional Noise in Gears 1 1. 5 Friction- Induced Vibration and Noise 1 1. 6 Procedure