简介
design of machine elements is particularly written for bilingual machine design course to chinese students with a balanced consideration of the basic requirements of the course and the students' english proficiency.hopefully the students can learn not only the skills of machine design but also the usage of english, thus strengthening their ability of solving practical mechanical engineering problems and meeting the challenge of globalization.
there are thirteen chapters in this book. the first three chapters discuss the general concerns of machine design, fundamentals of strength design, and introduction of tribology, respectively. the following chapters deal with the design of various specific machine elements, namely, shafting, sliding bearings, rolling-element bearings, posset screws, threaded joints, springs, gears, worm gears, brakes and clutches, and belt drives.
this book can be used as a textbook for teachers and students in mechanical engineering specialty or as a reference for the advanced-level students and the practicing engineers as well.
目录
Chapter 1 Introduction
1.1 The Meaning of Design
1.2 Design of Mechanical Systems
1.3 Design as a Multi-Disciplinary Endeavor
1.4 Design of Machine Elements and Role of Failure Prevention Analysis
1.5 Fundamental Design Considerations
Chapter 2 Fundamentals for Strength Design
2.1 Design for Static Strength
2.1.1 Factor of Safety
2.1.2 Stress Concentration
2.2 Fatigue and Cyclic Stresses
2.2.1 Fatigue
2.2.2 Cyclic Stress
2.3 Design for Cyclic Loading
2.3.1 Design for Fatigue Stress
2.3.2 Design for Finite Life
2.4 Failure Criteria and Modes of Mechanical Failure
Chapter 3 Introduction to Tribology
3.1 Friction
3.2 Wear
3.2.1 Adhesive Wear
3.2.2 Abrasive Wear
3.2.3 Fatigue Wear
3.3 Lubrication
Chapter 4 Power Transmission Shafting,Couplings,Keys and Splines
4.1 Uses and Characteristics of Shafting
4.2 Potential Failure Modes
4.3 Shaft Materials
4.4 Design for Static Loads
4.5 Reversed Bending and Steady Torsion
4.6 Shaft Design Procedure
4.7 Couplings,Keys,and Splines
4.7.1 Couplings
4.7.2 Keys and Splines
Chapter 5 Sliding Bearings
5.1 Types of Bearings
5.2 Uses and Characteristics of Sliding Bearings
5.3 Potential Failure Modes
5.4 Sliding Bearing Materials
5.5 Boundary-Lubricated Bearing Design
5.6 Hydrodynamic Bearing Design
5.6.1 Lubricant Properties
5.6.2 Petroff's Friction Analysis
5.6.3 Hydrodynamic Lubrication Theory—Reynolds Equation
5.6.4 Design Considerations in Hydrodynamic Journal Bearings
5.6.5 Bearing Performance—An Evaluation Example
5.6.6 Optimization Techniques
Chapter 6 Rolling Element Bearings
6.1 Characteristics of Rolling Element Bearings
6.2 Types of Rolling Element Bearings
6.3 Potential Failure Modes
6.4 Bearing Materials
6.5 Bearing Selection
6.5.1 Basic Load Ratings
6.5.2 Reliability Specifications
6.5.3 Suggested Selection Procedure for Steady Loads
6.6 Mounting and Enclosure
6.6.1 Mounting
6.6.2 Preloading
6.6.3 Alignment
6.6.4 Enclosures
Chapter 7 Power Screw Assemblies
7.1 Uses and Characteristics of Power Screws
7.2 Potential Failure Modes
7.3 Materials
7.4 The Mechanics of Power Screws
7.5 Suggested Power Screw Design Procedure
Chapter 8 Threaded Joints
8.1 Selection of Joint Type and Fastening Method
8.2 Threaded Fasteners
8.3 Screw Thread Standards and Terminology
8.4 Strength under Static Load
8.4.1 Joints Designed without Initial Stress
8.4.2 Joints Designed for Axially Loaded Threaded Parts
8.4.3 Joints Designed with Initial Stress
8.4.4 Joints Designed for Shear-Loaded Threaded Parts
8.5 Load Distribution between Threaded Parts in a Group Joint
8.6 Tightening and Locking
8.6.1 Tightening Torque
8.6.2 Locking Methods
Chapter 9 Springs
9.1 Types and Characteristics of Springs
9.2 Potential Failure Modes
9.3 Spring Materials
9.4 Axially Loaded Helical-Coil Springs;Stress
9.5 Deflection and Spring Rate
9.6 Buckling Analysis of Helical Compression Springs
9.7 Procedure and General Guidelines for Spring Design
Chapter 10 Gears
10.1 Types of Gears
10.2 Potential Failure Modes
10.3 Gear Materials and Heat Treatment
10.4 Force Analysis for Spur Gears
10.5 Stress Analysis and Design for Spur Gears
10.5.1 Calculation of Teeth Surface Strength for Spur Gears
10.5.2 Calculation of Teeth Bending Strength for Spur Gears
10.6 Designing of Helical Gears
10.6.1 Load Analysis for Helical Gears
10.6.2 Calculation of Teeth Surface Strength for Helical Gears
10.6.3 Calculation of Teeth Bending Strength for Helical Gears
10.7 Summary of Gear Design
10.7.1 Suggested Design Procedure
10.7.2 Some Consideration in the Design of Gears
10.8 Structural Design of Pinions and Gears
10.9 Lubrication
Chapter 11 Worm Gears
11.1 Worm Gears and Worms;Nomenclature,Materials
11.2 Main Parameters and Geometrical Calculations
11.3 Force Analysis
11.4 Stress Analysis and Design
11.5 Structural Design of Worm and Gears
11.6 Lubrication and Heat Dissipation
11.6.1 Efficiency of Wormset
11.6.2 Lubrication and Heat Dissipation
Chapter 12 Brakes and Clutches
12.1 Types of Brakes and Clutches
12.2 Potential Failure Modes and Materials Selection
12.3 Basic Concepts for Design of Brakes and Clutches
12.4 Band Brakes
12.5 Disk Brakes and Clutches
Chapter 13 Belt Drives
13.1 Characteristics of Belt Drives
13.2 Potential Failure and Belt Materials
13.3 Flat Belts
13.4 V-Belts
13.5 Synchronous Belts
Appendix
References
1.1 The Meaning of Design
1.2 Design of Mechanical Systems
1.3 Design as a Multi-Disciplinary Endeavor
1.4 Design of Machine Elements and Role of Failure Prevention Analysis
1.5 Fundamental Design Considerations
Chapter 2 Fundamentals for Strength Design
2.1 Design for Static Strength
2.1.1 Factor of Safety
2.1.2 Stress Concentration
2.2 Fatigue and Cyclic Stresses
2.2.1 Fatigue
2.2.2 Cyclic Stress
2.3 Design for Cyclic Loading
2.3.1 Design for Fatigue Stress
2.3.2 Design for Finite Life
2.4 Failure Criteria and Modes of Mechanical Failure
Chapter 3 Introduction to Tribology
3.1 Friction
3.2 Wear
3.2.1 Adhesive Wear
3.2.2 Abrasive Wear
3.2.3 Fatigue Wear
3.3 Lubrication
Chapter 4 Power Transmission Shafting,Couplings,Keys and Splines
4.1 Uses and Characteristics of Shafting
4.2 Potential Failure Modes
4.3 Shaft Materials
4.4 Design for Static Loads
4.5 Reversed Bending and Steady Torsion
4.6 Shaft Design Procedure
4.7 Couplings,Keys,and Splines
4.7.1 Couplings
4.7.2 Keys and Splines
Chapter 5 Sliding Bearings
5.1 Types of Bearings
5.2 Uses and Characteristics of Sliding Bearings
5.3 Potential Failure Modes
5.4 Sliding Bearing Materials
5.5 Boundary-Lubricated Bearing Design
5.6 Hydrodynamic Bearing Design
5.6.1 Lubricant Properties
5.6.2 Petroff's Friction Analysis
5.6.3 Hydrodynamic Lubrication Theory—Reynolds Equation
5.6.4 Design Considerations in Hydrodynamic Journal Bearings
5.6.5 Bearing Performance—An Evaluation Example
5.6.6 Optimization Techniques
Chapter 6 Rolling Element Bearings
6.1 Characteristics of Rolling Element Bearings
6.2 Types of Rolling Element Bearings
6.3 Potential Failure Modes
6.4 Bearing Materials
6.5 Bearing Selection
6.5.1 Basic Load Ratings
6.5.2 Reliability Specifications
6.5.3 Suggested Selection Procedure for Steady Loads
6.6 Mounting and Enclosure
6.6.1 Mounting
6.6.2 Preloading
6.6.3 Alignment
6.6.4 Enclosures
Chapter 7 Power Screw Assemblies
7.1 Uses and Characteristics of Power Screws
7.2 Potential Failure Modes
7.3 Materials
7.4 The Mechanics of Power Screws
7.5 Suggested Power Screw Design Procedure
Chapter 8 Threaded Joints
8.1 Selection of Joint Type and Fastening Method
8.2 Threaded Fasteners
8.3 Screw Thread Standards and Terminology
8.4 Strength under Static Load
8.4.1 Joints Designed without Initial Stress
8.4.2 Joints Designed for Axially Loaded Threaded Parts
8.4.3 Joints Designed with Initial Stress
8.4.4 Joints Designed for Shear-Loaded Threaded Parts
8.5 Load Distribution between Threaded Parts in a Group Joint
8.6 Tightening and Locking
8.6.1 Tightening Torque
8.6.2 Locking Methods
Chapter 9 Springs
9.1 Types and Characteristics of Springs
9.2 Potential Failure Modes
9.3 Spring Materials
9.4 Axially Loaded Helical-Coil Springs;Stress
9.5 Deflection and Spring Rate
9.6 Buckling Analysis of Helical Compression Springs
9.7 Procedure and General Guidelines for Spring Design
Chapter 10 Gears
10.1 Types of Gears
10.2 Potential Failure Modes
10.3 Gear Materials and Heat Treatment
10.4 Force Analysis for Spur Gears
10.5 Stress Analysis and Design for Spur Gears
10.5.1 Calculation of Teeth Surface Strength for Spur Gears
10.5.2 Calculation of Teeth Bending Strength for Spur Gears
10.6 Designing of Helical Gears
10.6.1 Load Analysis for Helical Gears
10.6.2 Calculation of Teeth Surface Strength for Helical Gears
10.6.3 Calculation of Teeth Bending Strength for Helical Gears
10.7 Summary of Gear Design
10.7.1 Suggested Design Procedure
10.7.2 Some Consideration in the Design of Gears
10.8 Structural Design of Pinions and Gears
10.9 Lubrication
Chapter 11 Worm Gears
11.1 Worm Gears and Worms;Nomenclature,Materials
11.2 Main Parameters and Geometrical Calculations
11.3 Force Analysis
11.4 Stress Analysis and Design
11.5 Structural Design of Worm and Gears
11.6 Lubrication and Heat Dissipation
11.6.1 Efficiency of Wormset
11.6.2 Lubrication and Heat Dissipation
Chapter 12 Brakes and Clutches
12.1 Types of Brakes and Clutches
12.2 Potential Failure Modes and Materials Selection
12.3 Basic Concepts for Design of Brakes and Clutches
12.4 Band Brakes
12.5 Disk Brakes and Clutches
Chapter 13 Belt Drives
13.1 Characteristics of Belt Drives
13.2 Potential Failure and Belt Materials
13.3 Flat Belts
13.4 V-Belts
13.5 Synchronous Belts
Appendix
References
Design of machine elements
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