SHIGLEY'S MECHANICAL ENGINEERING DESIGN EIGHTH EDITION【2025|PDF|Epub|mobi|kindle电子书版本百度云盘下载】

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Part 1 Basics2

1 Introduction to Mechanical Engineering Design3

1-1 Design4

1-2 Mechanical Engineering Design5

1-3 Phases and Interactions of the Design Process5

1-4 Design Tools and Resources8

1-5 The Design Engineer’s Professional Responsibilities10

1-6 Standards and Codes12

1-7 Economics12

1-8 Safety and Product Liability15

1-9 Stress and Strength15

1-10 Uncertainty16

1-11 Design Factor and Factor of Safety17

1-12 Reliability18

1-13 Dimensions and Tolerances19

1-14 Units21

1-15 Calculations and Significant Figures22

1-16 Power Transmission Case Study Specifications23

Problems24

2 Materials27

2-1 Material Strength and Stiffness28

2-2 The Statistical Significance of Material Properties32

2-3 Strength and Cold Work33

2-4 Hardness36

2-5 Impact Properties37

2-6 Temperature Effects39

2-7 Numbering Systems40

2-8 Sand Casting41

2-9 Shell Molding42

2-10 Investment Casting42

2-11 Powder-Metallurgy Process42

2-12 Hot-Working Processes43

2-13 Cold-Working Processes44

2-14 The Heat Treatment of Steel44

2-15 Alloy Steels47

2-16 Corrosion-Resistant Steels48

2-17 Casting Materials49

2-18 Nonferrous Metals51

2-19 Plastics54

2-20 Composite Materials55

2-21 Materials Selection56

Problems63

3 Load and Stress Analysis67

3-1 Equilibrium and Free-Body Diagrams68

3-2 Shear Force and Bending Moments in Beams71

3-3 Singularity Functions73

3-4 Stress75

3-5 Cartesian Stress Components75

3-6 Mohr’s Circle for Plane Stress76

3-7 General Three-Dimensional Stress82

3-8 Elastic Strain83

3-9 Uniformly Distributed Stresses84

3-10 Normal Stresses for Beams in Bending85

3-11 Shear Stresses for Beams in Bending90

3-12 Torsion95

3-13 Stress Concentration105

3-14 Stresses in Pressurized Cylinders107

3-15 Stresses in Rotating Rings110

3-16 Press and Shrink Fits110

3-17 Temperature Effects111

3-18 Curved Beams in Bending112

3-19 Contact Stresses117

3-20 Summary121

Problems121

4 Deflection and Stiffness141

4-1 Spring Rates142

4-2 Tension，Compression，and Torsion143

4-3 Deflection Due to Bending144

4-4 Beam Deflection Methods146

4-5 Beam Deflections by Superposition147

4-6 Beam Deflections by Singularity Functions150

4-7 Strain Energy156

4-8 Castigliano’s Theorem158

4-9 Deflection of Curved Members163

4-10 Statically Indeterminate Problems168

4-11 Compression Members——General173

4-12 Long Columns with Central Loading173

4-13 Intermediate-Length Columns with Central Loading176

4-14 Columns with Eccentric Loading176

4-15 Struts or Short Compression Members180

4-16 Elastic Stability182

4-17 Shock and Impact183

4-18 Suddenly Applied Loading184

Problems186

Part 2 Failure Prevention204

5 Failures Resulting from Static Loading205

5-1 Static Strength208

5-2 Stress Concentration209

5-3 Failure Theories211

5-4 Maximum-Shear-Stress Theory for Ductile Materials211

5-5 Distortion-Energy Theory for Ductile Materials213

5-6 Coulomb-Mohr Theory for Ductile Materials219

5-7 Failure of Ductile Materials Summary222

5-8 Maximum-Normal-Stress Theory for Brittle Materials226

5-9 Modifications of the Mohr Theory for Brittle Materials227

5-10 Failure of Brittle Materials Summary229

5-11 Selection of Failure Criteria230

5-12 Introduction to Fracture Mechanics231

5-13 Stochastic Analysis240

5-14 Important Design Equations246

Problems248

6 Fatigue Failure Resulting from Variable Loading257

6-1 Introduction to Fatigue in Metals258

6-2 Approach to Fatigue Failure in Analysis and Design264

6-3 Fatigue-Life Methods265

6-4 The Stress-Life Method265

6-5 The Strain-Life Method268

6-6 The Linear-Elastic Fracture Mechanics Method270

6-7 The Endurance Limit274

6-8 Fatigue Strength275

6-9 Endurance Limit Modifying Factors278

6-10 Stress Concentration and Notch Sensitivity287

6-11 Characterizing Fluctuating Stresses292

6-12 Fatigue Failure Criteria for Fluctuating Stress295

6-13 Torsional Fatigue Strength under Fluctuating Stresses309

6-14 Combinations of Loading Modes309

6-15 Varying，Fluctuating Stresses； Cumulative Fatigue Damage313

6-16 Surface Fatigue Strength319

6-17 Stochastic Analysis322

6-18 Roadmaps and Important Design Equations for the Stress-Life Method336

Problems340

Part 3 Design of Mechanical Elements346

7 Shafts and Shaft Components347

7-1 Introduction348

7-2 Shaft Materials348

7-3 Shaft layout349

7-4 Shaft Design for Stress354

7-5 Deflection Considerations367

7-6 Critical Speeds for Shafts371

7-7 Miscellaneous Shaft Components376

7-8 Limits and Fits383

Problems388

8 Screws，Fasteners，and the Design of Nonpermanent Joints395

8-1 Thread Standards and Definitions396

8-2 The Mechanics of Power Screws400

8-3 Threaded Fasteners408

8-4 Joints——Fastener Stiffness410

8-5 Joints——Member Stiffness413

8-6 Bolt Strength417

8-7 Tension Joints——The External Load421

8-8 Relating Bolt Torque to Bolt Tension422

8-9 Statically Loaded Tension Joint with Preload425

8-10 Gasketed Joints429

8-11 Fatigue Loading of Tension Joints429

8-12 Bolted and Riveted Joints Loaded in Shear435

Problems443

9 Welding，Bonding，and the Design of Permanent Joints457

9-1 Welding Symbols458

9-2 Butt and Fillet Welds460

9-3 Stresses in Welded Joints in Torsion464

9-4 Stresses in Welded Joints in Bending469

9-5 The Strength of Welded Joints471

9-6 Static Loading474

9-7 Fatigue Loading478

9-8 Resistance Welding480

9-9 Adhesive Bonding480

Problems489

10 Mechanical Springs499

10-1 Stresses in Helical Springs500

10-2 The Curvature Effect501

10-3 Deflection of Helical Springs502

10-4 Compression Springs502

10-5 Stability504

10-6 Spring Materials505

10-7 Helical Compression Spring Design for Static Service510

10-8 Critical Frequency of Helical Springs516

10-9 Fatigue Loading of Helical Compression Springs518

10-10 Helical Compression Spring Design for Fatigue Loading521

10-11 Extension Springs524

10-12 Helical Coil Torsion Springs532

10-13 Belleville Springs539

10-14 Miscellaneous Springs540

10-15 Summary542

Problems542

11 Rolling-Contact Bearings549

11-1 Bearing Types550

11-2 Bearing Life553

11-3 Bearing Load Life at Rated Reliability554

11-4 Bearing Survival：Reliability versus Life555

11-5 Relating Load，Life，and Reliability557

11-6 Combined Radial and Thrust Loading559

11-7 Variable Loading564

11-8 Selection of Ball and Cylindrical Roller Bearings568

11-9 Selection of Tapered Roller Bearings571

11-10 Design Assessment for Selected Rolling-Contact Bearings582

11-11 Lubrication586

11-12 Mounting and Enclosure587

Problems591

12 Lubrication and Journal Bearings597

12-1 Types of Lubrication598

12-2 Viscosity599

12-3 Petroff’s Equation601

12-4 Stable Lubrication603

12-5 Thick-Film Lubrication604

12-6 Hydrodynamic Theory605

12-7 Design Considerations609

12-8 The Relations of the Variables611

12-9 Steady-State Conditions in Self-Contained Bearings625

12-10 Clearance628

12-11 Pressure-Fed Bearings630

12-12 Loads and Materials636

12-13 Bearing Types638

12-14 Thrust Bearings639

12-15 Boundary-Lubricated Bearings640

Problems649

13 Gears—General653

13-1 Types of Gear654

13-2 Nomenclature655

13-3 Conjugate Action657

13-4 Involute Properties658

13-5 Fundamentals658

13-6 Contact Ratio664

13-7 Interference665

13-8 The Forming of Gear Teeth667

13-9 Straight Bevel Gears670

13-10 Parallel Helical Gears671

13-11 Worm Gears675

13-12 Tooth Systems676

13-13 Gear Trains678

13-14 Force Analysis——Spur Gearing685

13-15 Force Analysis——Bevel Gearing689

13-16 Force Analysis——Helical Gearing692

13-17 Force Analysis——Worm Gearing694

Problems700

14 Spur and Helical Gears713

14-1 The Lewis Bending Equation714

14-2 Surface Durability723

14-3 AGMA Stress Equations725

14-4 AGMA Strength Equations727

14-5 Geometry Factors I and J（Z，and YJ）731

14-6 The Elastic Coefficient Cp （ZE）736

14-7 Dynamic Factor Kv736

14-8 Overload Factor Ko738

14-9 Surface Condition Factor Cf （ZR）738

14-10 Size Factor Ks739

14-11 Load-Distribution Factor Km（KH）739

14-12 Hardness-Ratio Factor CH741

14-13 Stress Cycle Life Factors YN and ZN742

14-14 Reliability Factor KR （Yz）743

14-15 Temperature Factor KT （Yθ）744

14-16 Rim-Thickness Factor KB744

14-17 Safety Factors SF and SH745

14-18 Analysis745

14-19 Design of a Gear Mesh755

Problems760

15 Bevel and Worm Gears765

15-1 Bevel Gearing——General766

15-2 Bevel-Gear Stresses and Strengths768

15-3 AGMA Equation Factors771

15-4 Straight-Bevel Gear Analysis783

15-5 Design of a Straight-Bevel Gear Mesh786

15-6 Worm Gearing——AGMA Equation789

15-7 Worm-Gear Analysis793

15-8 Designing a Worm-Gear Mesh797

15-9 Buckingham Wear Load800

Problems801

16 Clutches，Brakes，Couplings，and Flywheels805

16-1 Static Analysis of Clutches and Brakes807

16-2 Internal Expanding Rim Clutches and Brakes812

16-3 External Contracting Rim Clutches and Brakes820

16-4 Band-Type Clutches and Brakes824

16-5 Frictional-Contact Axial Clutches825

16-6 Disk Brakes829

16-7 Cone Clutches and Brakes833

16-8 Energy Considerations836

16-9 Temperature Rise837

16-10 Friction Materials841

16-11 Miscellaneous Clutches and Couplings844

16-12 Flywheels846

Problems851

17 Flexible Mechanical Elements859

17-1 Belts860

17-2 Flat- and Round-Belt Drives863

17-3 V Belts878

17-4 Timing Belts886

17-5 Roller Chain887

17-6 Wire Rope896

17-7 Flexible Shafts904

Problems905

18 Power Transmission Case Study913

18-1 Design Sequence for Power Transmission915

18-2 Power and Torque Requirements916

18-3 Gear Specification916

18-4 Shaft Layout923

18-5 Force Analysis925

18-6 Shaft Material Selection925

18-7 Shaft Design for Stress926

18-8 Shaft Design for Deflection926

18-9 Bearing Selection927

18-11 Key and Retaining Ring Selection928

18-12 Final Analysis931

Problems931

Part 4 Analysis Tools932

19 Finite-Element Analysis933

19-1 The Finite-Element Method935

19-2 Element Geometries937

19-3 The Finite-Element Solution Process939

19-4 Mesh Generation942

19-5 Load Application944

19-6 Boundary Conditions945

19-7 Modeling Techniques946

19-8 Thermal Stresses949

19-9 Critical Buckling Load949

19-10 Vibration Analysis951

19-11 Summary952

Problems954

20 Statistical Considerations957

20-1 Random Variables958

20-2 Arithmetic Mean，Variance，and Standard Deviation960

20-3 Probability Distributions965

20-4 Propagation of Error972

20-5 Linear Regression974

Problems977

Appendices983

A Useful Tables983

B Answers to Selected Problems1039

Index1044