Design of Mechanical Elements

1. Auflage 2022
ISBN: 978-1-119-84991-9
Verlag: John Wiley & Sons

Buch, Englisch, 256 Seiten, Format (B × H): 182 mm x 256 mm, Gewicht: 703 g

Provides a student-friendly approach for building the skills required to perform mechanical design calculations

Design of Mechanical Elements offers an accessible introduction to mechanical design calculations. Written for students encountering the subject for the first time, this concise textbook focuses on fundamental concepts, problem solving, and methodical calculations of common mechanical components, rather than providing a comprehensive treatment of a wide range of components. Each chapter contains a brief overview of key terminology, a clear explanation of the physics underlying the topic, and solution procedures for typical mechanical design and verification problems.

The textbook is divided into three sections, beginning with an overview of the mechanical design process and coverage of basic design concepts including material selection, statistical considerations, tolerances, and safety factors. The next section discusses strength of materials in the context of design of mechanical elements, illustrating different types of static and dynamic loading problems and their corresponding failure criteria. In the concluding section, students learn to combine and apply these concepts and techniques to design specific mechanical elements including shafts, bolted and welded joints, bearings, and gears. - Provides a systematic “recipe” students can easily apply to perform mechanical design calculations
- Illustrates theoretical concepts and procedures for solving mechanical design problems with numerous solved examples

- Presents easy-to-understand explanations of the considerations and assumptions central to mechanical design
- Includes end-of-chapter practice problems that strengthen the understanding of calculation techniques

Supplying the basic skills and knowledge necessary for methodically performing basic mechanical design calculations, Design of Mechanical Elements: A Concise Introduction to Mechanical Design Considerations and Calculations is the perfect primary textbook for single-semester undergraduate mechanical design courses.

Autoren/Hrsg.

Raeymaekers, Bart

Fachgebiete

• Technische Wissenschaften Maschinenbau | Werkstoffkunde Maschinenbau Konstruktionslehre, Bauelemente, CAD

Inhaltsverzeichnis

About the author xi
Preface xiii
About the Companion Site xv

1 Mechanical Design 1
1.1 Introduction 1
1.2 Mechanical Design Process 1
1.3 Mechanical Elements 4
1.4 Standards and Codes 4
1.5 Uncertainty in Mechanical Design 5
1.6 Design for Safety 9
1.7 Key Takeaways 9
1.8 Problems 10

2 Material Selection 13
2.1 Introduction 13
2.2 Material Classification 13
2.3 Mechanical Properties 14
2.4 Materials Processing 20
2.5 Alloys 26
2.6 Key Takeaways 28
2.7 Problems 29

3 Statistical Considerations 33
3.1 Introduction 33
3.2 Random Variables and Distributions 33
3.3 Density Functions 34
3.4 Metrics to Describe a Distribution 35
3.5 Linear Combination of Random Variables 37
3.6 Types of Distributions 39
3.7 Key Takeaways 48
3.8 Problems 48

4 Tolerances 53
4.1 Introduction 53
4.2 Terminology 53
4.3 Preferred Fits and Tolerances 55
4.4 Tolerance Stacks 60
4.5 Key Takeaways 63
4.6 Problems 64

5 Design for Static Strength 69
5.1 Introduction 69
5.2 Simple Loading 70
5.3 Stress Concentrations 73
5.4 Failure Criteria 79
5.5 Key Takeaways 85
5.6 Problems 85

6 Design for Fatigue Strength 91
6.1 Introduction 91
6.2 Fatigue-life Methods 93
6.3 Fatigue Strength 95
6.4 Endurance-limit Modifying Factors 96
6.5 Fluctuating Stresses 101
6.6 Stress Concentrations 105
6.7 Key Takeaways 106
6.8 Problems 106

7 Shafts 111
7.1 Introduction 111
7.2 Recipe for Shaft Calculations 113
7.3 Example Calculations 115
7.4 Critical Rotation Frequency of a Shaft 122
7.5 Key Takeaways 126
7.6 Problems 126

8 Bolted Joints 131
8.1 Introduction 131
8.2 Power Screws 131
8.3 Fasteners 139
8.4 Key Takeaways 159
8.5 Problems 160

9 Welded Joints 165
9.1 Introduction 165
9.2 Welded Joint Geometry 168
9.3 Calculation of Welded Joints 169
9.4 Key Takeaways 187
9.5 Problems 187

10 Rolling Element Bearings 191
10.1 Introduction 191
10.2 Types of Rolling Element Bearings 192
10.3 Hertz Contact Stress 193
10.4 Bearing Calculations 198
10.5 Key Takeaways 205
10.6 Problems 205

11 Gears 209
11.1 Introduction 209
11.2 Conjugate Gear Tooth Action 213
11.3 Kinematics 214
11.4 Gear Force Analysis 219
11.5 Gear Manufacturing 222
11.6 Key Takeaways 223
11.7 Problems 223

A Area Moment of Inertia 225
A.1 Introduction 225
A.2 Terminology 225
A.3 Parallel Axis Theorem 226
A.4 Rotation About the Origin 227

B Internal Force Diagrams 231
B.1 Cantilever Beam with End Load 231
B.2 Cantilever Beam with Intermediate Load 231
B.3 Simple Supported Beam with Center Load 232
B.4 Simple Supported Beam with Intermediate Load 233

C Elementary Stress Element 235
C.1 Introduction 235
C.2 Principal Stresses 235
C.3 Maximum Shear Stress 235

Index 237

Über Autor(innen)

Bart Raeymaekers is a Professor in the Department of Mechanical Engineering at the University of Utah, USA. His research focuses on tribology and engineered materials manufacturing and he teaches courses in mechanical design. He is an ASME Fellow and has been a multi-year recipient of the University of Utah, Department of Mechanical Engineering, Outstanding Teaching Award.