Mechanics of Machines

Mechanics of Machines
اسم المؤلف
G. H. Ryder , M. D. Bennett
التاريخ
1 سبتمبر 2020
المشاهدات
263
التقييم
(لا توجد تقييمات)
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Mechanics of Machines
Second Edition
G. H. Ryder
Formerly Principal Lecturer, Royal Military College of Science,
Shrivenham
M. D. Bennett
Senior Lecturer, Royal Military College of Science,
Shrivenham
Contents
Preface to the First Edition vi
Preface to the Second Edition vii
Part I: Principles 1
1 Introduction 3
2 Forces and Equilibrium 11
3 Kinematics 40
4 Kinetics 69
5 Work and Energy 88
6 Impulse and Momentum 103
Part II: Applications 123
7 Kinematics of Mechanisms 125
8 Friction and Lubrication in Machines 150
9 Toothed Gears 182
10 Geared Systems 201
11 Kinetics of Machine Elements 225
12 Balancing of Machines 243
13 Vibrations of Single-degree-of-freedom Systems 262
14 Vibrations of MuIti-degree-of-freedom Systems 282
15 Lateral Vibrations and Whirling Speeds 294
16 Robotics and Control 310
Index
INDEX
acceleration 40
angular 49
constant 43
Coriolis 56
variable 45
acceleration diagram 141-5
acceleration of gear trains 213-18
angle of friction 30
angular acceleration 49
angular impulse 113
angular momentum 112
angular motion 49
angular velocity 49
balancing 243-58
multi-cylinder engines 251
reciprocating masses 250-8
rotating masses 243-8
single-cylinder engines 250
Vee engines 254
band brakes 171
beam vibrations 294-305
bearings 151, 158
belt drives 164-70
boundary lubrication 151
brakes 170
band 171
disc 172
drum 173
cams 234
follower motion 235-9
Cartesian coordinates 51
centre of gravity 13
centre of mass 14
clutches 158-64
coefficient of friction 30, 31
coefficient of restitution 106
compound pendulum 78
conservation of momentum 106
control systems 310
closed loops 313
closed-loop gain 315
open loops 313
open-loop gain 315
Coriolis acceleration 56
couple 18
inertia 82, 225-30
moment of 18
work done by 89
D’Alembert’s principle 82
damping 263
degrees of freedom 128, 263, 282
disc brakes 172
displacement 40
drum brakes 173
efficiency 98
belt drives 169
involute gears 197
screw threads 154
worm gears 197
elastic impact 107
energy 89-97
engine balance 250-8
fluctuation of 230-4
kinetic 91, 93
potential 90
strain 90
equilibrium 20-8
333334 INDEX
feedback 313
error rate 325
negative velocity 324
positive acceleration 325
feedforward 324
input rate 325
film lubrication 151
first-order control systems 315
fixed-axis rotation 58, 77
fluctuation of energy 230-4
forced vibrations 272-5, 285
forces 11-19
concurrent 21
equilibrium 20
friction 29
in engine mechanism 248
inertia 82,225-30
moments of 16
nature of 11
resultant of 17
work done by 88
four-bar chain 126
free vibrations 264-72, 283
free-body diagram 15
friction 29-34, 150
angle of 30
coefficient of 30
Coulomb 29
force 29
internal 34
limiting 30
rolling 33
screw and nut 152-8
solid 29
friction clutches 158-64
gear trains 201
acceleration of 213-18
angular impulse in 218
compound 202
epicyclic 205-12
torque in 212
vibration in 289
gears 182
classification 182
contact path 189-92
cycloidal 186
efficiency 197, 198
interference 192
involute 187-94
pitch point 185
sliding velocity 186
standard tooth proportions 193
tooth stresses 195
uniform motion 184
velocity and torque ratios 194
worm 198
Geneva mechanism 131
gyroscopes 116-18
free 116
nutation 116
precession 116
rectangular precession 117
hydraulic relay 316
impact
elastic 107
inelastic 107
linear 105
oblique 109
plastic 107
rigid bodies 115
impulse 103
angular 113
linear 103
inertia
couple 82,225-30
force 82,225-30
moment of 77, 79
instantaneous centre 60, 63, 134
integral control 326
inversion 125
kinematic constraint 128
kinematic pairs 125
kinematics of a particle 40
kinematics of a rigid body 58-64
kinematics of a straight line 40-8
kinematics of mechanisms 125-45
kinetic energy 91, 93
kinetics of a particle 69-72
kinetics of a rigid body 72-84
kinetics of machine elements 225
lateral vibrations 294-305
limiting friction 30
linear impact 105
linear impulse 103
linear momentum 103
lubrication 150-2
machine 3
mathematical models 3mechanisms 125
moment of a couple 18
moment of a force 16
moment of inertia 77, 79
moment of momentum 112
momentum 103-15
angular 112
conservation of 106
linear 103
moment of 112
rigid body 112
motion
angular 49
plane 58,80
projectile 53
relative 61
straight line 40
translation 58
Newton’s laws 11
Oldham coupling 127
oscillating cylinder engine 127
parallel-axis theorem 77
plane motion 58, 80
polar co-ordinates 54
position-control systems 314
potential energy 90
power 97
projectile motion 53
pulley drives 164-70
radius of gyration 77
recoil 110
relative motion 61
response time 318
restitution 106
resultant 17
right-hand-screw rule 16
rise time 318
robot control 312
robot programming 311
robotics 310
rope drives 164-70
rotation, fixed-axis 58, 77
INDEX 335
scalars 4
Scotch yoke mechanism 127
screw friction 152-8
second-order control systems 317
simple harmonic motion 47, 78
slider-crank mechanism 126, 129
stability 329
strain energy 90
terminal velocity 47
three centres in line theorem 137
time constant 316
tolerance band 318
torsional vibration 267-8, 286-92
transfer function 314
translation 58, 74
transmissibility 275
units 12
variable mass 111
vectors 4-10
addition 4
resolution 8
subtraction 4
velocity 40
angular 49
velocity diagram 139-41
vibration absorber 285
vibration isolation 275
vibration-measuring instruments 277
vibrations 262
forced 272-5, 285
free damped 269-72, 283
free undamped 264-7
lateral 294-305
torsional 267-8,286-92
weight 13
whirling 294-305
Whitworth quick-return
mechanism 127
work 88
done by a couple 89
done by a force 88
work-energy equation 91
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