Download presentation
1
Clutches, Brakes, Couplings, and Flywheels
Lecture Slides Chapter 16 Clutches, Brakes, Couplings, and Flywheels The McGraw-Hill Companies © 2012
2
Chapter Outline Shigley’s Mechanical Engineering Design
3
Model of Clutch Fig. 16–1 Shigley’s Mechanical Engineering Design
4
Friction Analysis of a Doorstop
Fig. 16–2 Shigley’s Mechanical Engineering Design
5
Friction Analysis of a Doorstop
Fig. 16–2 Shigley’s Mechanical Engineering Design
6
Friction Analysis of a Doorstop
Shigley’s Mechanical Engineering Design
7
Friction Analysis of a Doorstop
Shigley’s Mechanical Engineering Design
8
Example 16–1 Shigley’s Mechanical Engineering Design
9
Example 16–1 Shigley’s Mechanical Engineering Design
10
Example 16–1 Shigley’s Mechanical Engineering Design
11
Example 16–1 Shigley’s Mechanical Engineering Design
12
Example 16–1 Shigley’s Mechanical Engineering Design
13
Example 16–1 Shigley’s Mechanical Engineering Design
14
Example 16–1 Shigley’s Mechanical Engineering Design
15
Example 16–1 Shigley’s Mechanical Engineering Design
16
Example 16–1 Shigley’s Mechanical Engineering Design
17
An Internal Expanding Centrifugal-acting Rim Clutch
Fig. 16–3 Shigley’s Mechanical Engineering Design
18
Internal Friction Shoe Geometry
Fig. 16–4 Shigley’s Mechanical Engineering Design
19
Internal Friction Shoe Geometry
Fig. 16–5 Shigley’s Mechanical Engineering Design
20
Pressure Distribution Characteristics
Pressure distribution is sinusoidal For short shoe, as in (a), the largest pressure on the shoe is pa at the end of the shoe For long shoe, as in (b), the largest pressure is pa at qa = 90º Fig. 16–6 Shigley’s Mechanical Engineering Design
21
Force Analysis Fig. 16–7 Shigley’s Mechanical Engineering Design
22
Self-locking condition
Force Analysis Self-locking condition Shigley’s Mechanical Engineering Design
23
Force Analysis Shigley’s Mechanical Engineering Design
24
Force Analysis Shigley’s Mechanical Engineering Design
25
Example 16–2 Fig. 16–8 Shigley’s Mechanical Engineering Design
26
Example 16–2 Shigley’s Mechanical Engineering Design
27
Example 16–2 Shigley’s Mechanical Engineering Design
28
Example 16–2 Shigley’s Mechanical Engineering Design
29
Example 16–2 Shigley’s Mechanical Engineering Design
30
Example 16–2 Shigley’s Mechanical Engineering Design
31
Example 16–2 Shigley’s Mechanical Engineering Design
32
Example 16–2 Fig. 16–9 Shigley’s Mechanical Engineering Design
33
An External Contracting Clutch-Brake
Fig. 16–10 Shigley’s Mechanical Engineering Design
34
Notation of External Contracting Shoes
Fig. 16–11 Shigley’s Mechanical Engineering Design
35
Force Analysis for External Contracting Shoes
Shigley’s Mechanical Engineering Design
36
Force Analysis for External Contracting Shoes
For counterclockwise rotation: Shigley’s Mechanical Engineering Design
37
Brake with Symmetrical Pivoted Shoe
Fig. 16–12 Shigley’s Mechanical Engineering Design
38
Wear and Pressure with Symmetrical Pivoted Shoe
Fig. 16–12b Shigley’s Mechanical Engineering Design
39
Force Analysis with Symmetrical Pivoted Shoe
Shigley’s Mechanical Engineering Design
40
Force Analysis with Symmetrical Pivoted Shoe
Shigley’s Mechanical Engineering Design
41
Notation for Band-Type Clutches and Brakes
Fig. 16–13 Shigley’s Mechanical Engineering Design
42
Force Analysis for Brake Band
Shigley’s Mechanical Engineering Design
43
Force Analysis for Brake Band
Shigley’s Mechanical Engineering Design
44
Frictional-Contact Axial Single-Plate Clutch
Fig. 16–14 Shigley’s Mechanical Engineering Design
45
Frictional-Contact Axial Multi-Plate Clutch
Fig. 16–15 Shigley’s Mechanical Engineering Design
46
Geometry of Disk Friction Member
Fig. 16–16 Shigley’s Mechanical Engineering Design
47
Uniform Wear Shigley’s Mechanical Engineering Design
48
Uniform Pressure Shigley’s Mechanical Engineering Design
49
Comparison of Uniform Wear with Uniform Pressure
Fig. 16–17 Shigley’s Mechanical Engineering Design
50
Automotive Disk Brake Fig. 16–18
Shigley’s Mechanical Engineering Design
51
Geometry of Contact Area of Annular-Pad Brake
Fig. 16–19 Shigley’s Mechanical Engineering Design
52
Analysis of Annular-Pad Brake
Shigley’s Mechanical Engineering Design
53
Uniform Wear Shigley’s Mechanical Engineering Design
54
Uniform Pressure Shigley’s Mechanical Engineering Design
55
Example 16–3 Shigley’s Mechanical Engineering Design
56
Example 16–3 Shigley’s Mechanical Engineering Design
57
Example 16–3 Shigley’s Mechanical Engineering Design
58
Geometry of Circular Pad Caliper Brake
Fig. 16–20 Shigley’s Mechanical Engineering Design
59
Analysis of Circular Pad Caliper Brake
Shigley’s Mechanical Engineering Design
60
Example 16–4 Shigley’s Mechanical Engineering Design
61
Example 16–4 Shigley’s Mechanical Engineering Design
62
Cone Clutch Fig. 16–21 Shigley’s Mechanical Engineering Design
63
Contact Area of Cone Clutch
Fig. 16–22 Shigley’s Mechanical Engineering Design
64
Uniform Wear Shigley’s Mechanical Engineering Design
65
Uniform Pressure Shigley’s Mechanical Engineering Design
66
Energy Considerations
Shigley’s Mechanical Engineering Design
67
Energy Considerations
Shigley’s Mechanical Engineering Design
68
Temperature Rise Shigley’s Mechanical Engineering Design
69
Newton’s Cooling Model
Shigley’s Mechanical Engineering Design
70
Effect of Braking on Temperature
Fig. 16–23 Shigley’s Mechanical Engineering Design
71
Rate of Heat Transfer Shigley’s Mechanical Engineering Design
72
Heat-Transfer Coefficient in Still Air
Fig. 16–24a Shigley’s Mechanical Engineering Design
73
Ventilation Factors Fig. 16–24b
Shigley’s Mechanical Engineering Design
74
Energy Analysis Shigley’s Mechanical Engineering Design
75
Example 16–5 Shigley’s Mechanical Engineering Design
76
Example 16–5 Shigley’s Mechanical Engineering Design
77
Example 16–5 Shigley’s Mechanical Engineering Design
78
Area of Friction Material for Average Braking Power
Shigley’s Mechanical Engineering Design
79
Characteristics of Friction Materials
Table 16–3 Shigley’s Mechanical Engineering Design
80
Some Properties of Brake Linings
Table 16–4 Shigley’s Mechanical Engineering Design
81
Friction Materials for Clutches
Shigley’s Mechanical Engineering Design
82
Positive-Contact Clutches
Characteristics of positive- contact clutches No slip No heat generated Cannot be engaged at high speeds Sometimes cannot be engaged when both shafts are at rest Engagement is accompanied by shock Square-jaw Clutch Fig. 16–25a Shigley’s Mechanical Engineering Design
83
Overload Release Clutch
Fig. 16–25b Shigley’s Mechanical Engineering Design
84
Shaft Couplings Fig. 16–26 Shigley’s Mechanical Engineering Design
85
Flywheels Shigley’s Mechanical Engineering Design
86
Hypothetical Flywheel Case
Fig. 16–27 Shigley’s Mechanical Engineering Design
87
Kinetic Energy Shigley’s Mechanical Engineering Design
88
Engine Torque for One Cylinder Cycle
Fig. 16–28 Shigley’s Mechanical Engineering Design
89
Coefficient of Speed Fluctuation, Cs
Shigley’s Mechanical Engineering Design
90
Energy Change Shigley’s Mechanical Engineering Design
91
Example 16–6 Shigley’s Mechanical Engineering Design
92
Example 16–6 Table 16–6 Shigley’s Mechanical Engineering Design
93
Example 16–6 Shigley’s Mechanical Engineering Design
94
Punch-Press Torque Demand
Fig. 16–29 Shigley’s Mechanical Engineering Design
95
Punch-Press Analysis Shigley’s Mechanical Engineering Design
96
Induction Motor Characteristics
Shigley’s Mechanical Engineering Design
97
Induction Motor Characteristics
Acceleration: Deceleration: Shigley’s Mechanical Engineering Design
98
Induction Motor Characteristics
Shigley’s Mechanical Engineering Design
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.