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| موضوع: حل كتاب Machine Elements in Mechanical Design 5th Edition Solution Manual الإثنين 04 ديسمبر 2017, 12:00 am | |
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أخوانى فى الله أحضرت لكم كتاب حل كتاب Machine Elements in Mechanical Design 5th Edition Solution Manual Robert L.Mott
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University of Dayton Contents PART I Principles of Design and Stress Analysis 1 1 The Nature of Mechanical Design 2 The Big Picture 3 You Are the Designer 9 1-1 Objectives of This Chapter 9 1-2 The Mechanical Design Process 9 1-3 Skills Needed in Mechanical Design 11 1-4 Functions, Design Requirements, and Evaluation Criteria 11 1-5 Example of the Integration of Machine Elements into a Mechanical Design 14 1-6 Computational Aids in This Book 17 1-7 Design Calculations 17 1-8 Preferred Basic Sizes, Screw Threads, and Standard Shapes 18 1-9 Unit Systems 24 1-10 Distinction among Weight, Force, and Mass 26 References 27 Internet Sites 27 Problems 28 2 Materials in Mechanical Design 29 The Big Picture 30 You Are the Designer 31 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 Objectives of This Chapter 32 Properties of Materials 32 Classification of Metals and Alloys 44 Variability of Material Properties Data 45 Carbon and Alloy Steel 46 Conditions for Steels and Heat Treatment 49 Stainless Steels 53 Structural Steel 54 2-9 Tool Steels 54 2-10 Cast Iron 54 2-11 Powdered Metals 56 2-12 Aluminum 57 2-13 Zinc Alloys 59 2-14 Titanium 60 2-15 Copper, Brass, and Bronze 60 2-16 Nickel-Based Alloys 61 2-17 Plastics 61 2-18 Composite Materials 65 2-19 Materials Selection 77 References 78 Internet Sites 79 Problems 80 3 Stress and Deformation Analysis 83 The Big Picture 84 You Are the Designer 85 3-1 Objectives of This Chapter 89 3-2 Philosophy of a Safe Design 89 3-3 Representing Stresses on a Stress Element 89 3-4 Direct Stresses: Tension and Compression 90 3-5 Deformation under Direct Axial Loading 92 3-6 Direct Shear Stress 92 3-7 Relationship among Torque, Power, and Rotational Speed 94 3-8 Torsional Shear Stress 95 3-9 Torsional Deformation 97 3-10 Torsion in Members Having Noncircular Cross Sections 98 3-11 Torsion in Closed, Thin-Walled Tubes 100 3-12 Open Tubes and a Comparison with Clo.sed Tubes 100 3-13 Vertical Shearing Stress 102 3-14 Special Shearing Stress Formulas 104 VIIVlll Contents 3-15 Stress Due to Bending 105 3-16 Flexural Center for Beams 107 3-17 Beam Deflections 108 3-18 Equations for Deflected Beam Shape 110 3-19 Beams with Concentrated Bending Moments 1 12 3-20 Combined Normal Stresses: Superposition Principle 1 17 3-21 Stress Concentrations 119 3-22 Notch Sensitivity and Strength Reduction Factor 122 References 123 Internet Sites 123 Problems 123 4 Combined Stresses and Mohr's Circle 135 The Big Picture 136 You Are the Designer 136 4-1 Objectives of This Chapter 138 4-2 General Case of Combined Stress 138 4-3 Mohr's Circle 145 4-4 Mohr's Circle Practice Problems 151 4-5 Case When Both Principal Stresses Have the Same Sign 155 4-6 Mohr's Circle for Special Stress Conditions 158 4-7 Analysis of Complex Loading Conditions 161 References 162 Internet Site 162 Problems 162 5 Design for Different Types of Loading 163 The Big Picture 164 You Are the Designer 166 5-1 Objectives of This Chapter 166 5-2 Types of Loading and Stress Ratio 166 5-3 Endurance Strength 172 5-4 Estimated Actual Endurance Strength, .v,' 173 5-5 Example Problems for Estimating Actual Endurance Strength 181 5-6 Design Philosophy 182 5-7 Design Factors 185 5-8 Predictions of Failure 186 5-9 Design Analysis Methods 193 5-10 General Design Procedure 197 5-11 Design Examples 200 5-12 Statistical Approaches to Design 213 5-13 Finite Life and Damage Accumulafion Method 214 References 218 Problems 219 6 Columns 229 The Big Picture 230 You Are the Designer 231 6-1 Objectives of This Chapter 231 6-2 Properties of the Cross Section of a Column 232 6-3 End Fixity and Effective Length 232 6-4 Slenderness Ratio 234 6-5 Transition Slenderness Ratio 234 6-6 Long Column Analysis: The Euler Formula 235 6-7 Short Column Analysis: The J. B. Johnson Formula 239 6-8 Column Analysis Spreadsheet 241 6-9 Efficient Shapes for Column Cross Sections 244 6-10 The Design of Columns 245 6-11 Crooked Columns 250 6-12 Eccentrically Loaded Columns 251 References 257 Problems 257 PART II Design of a Mechanical Drive 261 7 Belt Drives and Chain Drives 264 The Big Picture 265 You Are the Designer 267 7-1 Objecfives of This Chapter 267 7-2 Types of Belt Drives 268Contents IX 7-3 V-Belt Drives 269 7 ^ V-Belt Drive Design 272 7-5 Chain Drives 283 7-6 Design of Chain Drives 285 References 296 Internet Sites 298 Problems 298 8 Kinematics of Gears 300 The Big Picture 301 You Are the Designer 305 8-1 Objectives of This Chapter 306 8-2 Spur Gear Styles 306 8-3 Spur Gear Geometry: Involute-Tooth Fonn 307 8-4 Spur Gear Nomenclature and Gear-Tooth Features 308 8-5 Interference between Mating Spur Gear Teeth 320 8-6 Velocity Ratio and Gear Trains 322 8-7 Helical Gear Geometry 329 8-8 Bevel Gear Geometry 333 8-9 Types of Wormgearing 339 8-10 Geometry of Worms and Wormgears 341 8-11 Typical Geometry of Wormgear Sets 344 8-12 Train Value for Complex Gear Trains 347 8-13 Devising Gear Trains 350 References 357 Internet Sites 357 Problems 358 9 Spur Gear Design 363 The Big Picture 364 You Are the Designer 365 9-1 Objectives of This Chapter 365 9-2 Concepts from Previous Chapters 366 9-3 Forces, Torque, and Power in Gearing 367 9 ^ Gear Manufacture 370 9-5 Gear Quality 372 9-6 Allowable Stress Numbers 378 9-7 Metallic Gear Materials 379 9-8 Stresses in Gear Teeth 385 9-9 Selection of Gear Material Based on Bending Stress 394 9-10 Pitting Resistance of Gear Teeth 399 9-11 Selection of Gear Material Based on Contact Stress 402 9-12 Design of Spur Gears 407 9-13 Gear Design for the Metric Module System 413 9-14 Computer-Aided Spur Gear Design and Analysis 415 9-15 Use of the Spur Gear Design Spreadsheet 419 9-16 Power-Transmitting Capacity 428 9-17 Practical Considerations for Gears and Interfaces with Other Elements 430 9-18 Plastics Gearing 434 References 442 Internet Sites 443 Problems 444 10 Helical Gears, Bevel Gears, and Wormgearing 449 The Big Picture 450 You Are the Designer 452 10-1 Objectives of This Chapter 452 10-2 Forces on Helical Gear Teeth 452 10-3 Stresses in Helical Gear Teeth 455 10-4 Pitting Resistance for Helical Gear Teeth 459 10-5 Design of Helical Gears 460 10-6 Forces on Straight Bevel Gears 463 10-7 Bearing Forces on Shafts Carrying Bevel Gears 465 10-8 Bending Moments on Shafts Carrying Bevel Gears 470 10-9 Stresses in Straight Bevel Gear Teeth 470 10-10 Design of Bevel Gears for Pitting Resistance 473 10-11 Forces, Friction, and Efficiency in Wormgear Sets 475 10-12 Stress in Wormgear Teeth 481 10-13 Surface Durability of Wormgear Drives 482 References 488 Internet Sites 488 Problems 489Contents 11 Keys, Couplings, and Seals 491 The Big Picture 492 You Are the Designer 493 11-1 Objectives of This Chapter 493 11-2 Keys 494 11-3 Materials for Keys 498 11-4 Stress Analysis to Determine Key Length 499 11-5 Splines 503 11-6 Other Methods of Fastening Elements to Shafts 508 11-7 Couplings 513 11-8 Universal Joints 516 11-9 Retaining Rings and Other Means of Axial Location 518 11-10 Types of Seals 521 11-11 Seal Materials 525 References 526 Internet Sites 527 Problems 528 12 Shaft Design 530 The Big Picture 531 You Are the Designer 532 12-1 Objectives of This Chapter 532 12-2 Shaft Design Procedure 532 12-3 Forces Exerted on Shafts by Machine Elements 535 12-4 Stress Concentrations in Shafts 540 12-5 Design Stresses for Shafts 543 12-6 Shafts in Bending and Torsion Only 546 12-7 Shaft Design Example 548 12-8 Recommended Basic Sizes for Shafts 552 12-9 Additional Design Examples 553 12-10 Spreadsheet Aid for Shaft Design 561 12-11 Shaft Rigidity and Dynamic Considerations 562 12-12 Flexible Shafts 563 References 564 Internet Sites 564 Problems 565 13 Tolerances and Fits 575 The Big Picture 576 You Are the Designer 577 13-1 Objectives of This Chapter 577 13-2 Factors Affecting Tolerances and Fits 578 13-3 Tolerances, Production Processes, and Cest 578 13-4 Preferred Basic Sizes 581 13-5 Clearance Fits 581 13-6 Interference Fits 585 13-7 Transition Fits 586 13-8 Stresses for Force Fits 587 13-9 General Tolerancing Methods 591 13-10 Robust Product Design 592 References 594 Internet Sites 594 Problems 595 14 Rolling Contact Bearings 597 The Big Picture 598 You Are the Designer 599 14-1 Objectives of This Chapter 600 14-2 Types of Rolling Contact Bearings 600 14-3 Thru.st Bearings 604 14-4 Mounted Bearings 604 14-5 Bearing Materials 606 14-6 Load/Life Relationship 606 14-7 Bearing Manufacturers' Data 606 14-8 Design Life 611 14-9 Bearing Selection: Radial Loads Only 613 14-10 Bearing Selection: Radial and Thmst Loads Combined 614 14-11 Mounting of Bearings 616 14-12 Tapered Roller Bearings 618 14-13 Practical Considerations in the Application of Bearings 621 14-14 Importance of Oil Film Thickness in Bearings 624 14-15 Life Prediction under Varying Loads 625 References 627 Internet Sites 627 Problems 628Contents XI 15 Completion of the Design of a Power Transmission 630 The Big Picture 631 15-1 Objectives of This Chapter 631 15-2 Description of the Power Transmission to Be Designed 631 15-3 Design Alternatives and Selection of the Design Approach 633 15-4 Design Alternatives for the Gear-Type Reducer 635 15-5 General Layout and Design Details of the Reducer 635 15-6 Final Design Details for the Shafts 652 15-7 Assembly Drawing 655 References 657 Internet Sites 657 PART III Design Details and Other Machine Elements 659 16 Plain Surface Bearings 660 The Big Picture 661 You Are the Designer 663 16-1 Objectives of This Chapter 663 16-2 The Bearing Design Task 663 16-3 Bearing Parameter, [xnip 665 16-4 Bearing Materials 666 16-5 Design of Boundary-Lubricated Bearings 668 16-6 Full-Film Hydrodynamic Bearings 674 16-7 Design of Full-Film Hydrodynamically Lubricated Bearings 675 16-8 Practical Considerations for Plain Surface Bearings 682 16-9 Hydrostatic Bearings 683 16-10 Tribology: Fricfion, Lubrication, and Wear 687 References 691 Internet Sites 692 Problems 693 17 Linear Motion Elements 694 The Big Picture 695 You Are the Designer 698 17-1 Objectives of This Chapter 698 17-2 Power Screws 699 17-3 Ball Screws 704 17-4 Application Considerations for Power Screws and Ball Screws 707 References 709 Internet Sites 709 Problems 709 18 Fasteners 711 The Big Picture 713 You Are the Designer 714 18-1 Objecfives of This Chapter 714 18-2 Bolt Materials and Strength 714 18-3 Thread Designations and Stress Area 717 18-4 Clamping Load and Tightening of Bolted Joints 719 18-5 Extemally Applied Force on a Bolted Joint 722 18-6 Thread Stripping Strength 723 18-7 Other Types of Fasteners and Accessories 724 18-8 Other Means of Fastening and Joining 726 References 727 Internet Sites 727 Problems 728 19 Springs 729 The Big Picture 730 You Are the Designer 731 19-1 Objectives of This Chapter 732 19-2 Kinds of Springs 732 19-3 Helical Compression Springs 735 19-4 Stresses and Deflection for Helical Compression Springs 744 19-5 Analysis of Spring Characteristics 746 19-6 Design of Helical Compression Springs 749 19-7 Extension Springs 757 19-8 Helical Torsion Springs 762 19-9 Improving Spring Performance by Shot Peening 769 19-10 Spring Manufacturing 770 References 770 Internet Sites 770 Problems 771XII Contents 20 Machine Frames, Bolted Connections, and Welded Joints 773 The Big Picture 774 You Are the Designer 775 20-1 Objectives of This Chapter 775 20-2 Machine Frames and Structures 776 20-3 Eccentrically Loaded Bolted Joints 780 20-4 Welded Joints 783 References 792 Internet Sites 792 Problems 793 21 Electric Motors and Controls 795 The Big Picture 796 You Are the Designer 797 21-1 Objecfives of This Chapter 797 21-2 Motor Selection Factors 798 21-3 AC Power and General Information about AC Motors 799 2 1 ^ Principles of Operation of AC Induction Motors 800 21-5 AC Motor Performance 802 21-6 Three-Phase, Squirrel-Cage Induction Motors 803 21-7 Single-Phase Motors 806 21-8 AC Motor Frame Types and Enclosures 808 21-9 Controls for AC Motors 811 21-10 DC Power 820 21-11 DC Motors 821 21-12 DC Motor Control 824 21-13 Other Types of Motors 824 References 826 Internet Sites 827 Problems 827 22 Motion Control: Clutches and Brakes 830 The Big Picture 831 You Are the Designer 833 22-1 Objectives of This Chapter 833 22-2 Descriptions of Clutches and Brakes 833 22-3 Types of Friction Clutches and Brakes 835 22-4 Performance Parameters 840 22-5 Time Required to Accelerate a Load 841 22-6 Inertia of a Sy.stem Referred to the Clutch Shaft Speed 844 22-7 Effective Inertia for Bodies Moving Lineariy 845 22-8 Energy Absorption: Heat-Dissipation Requirements 846 22-9 Response Time 847 22-10 Friction Materials and Coefficient of Friction 849 22-11 Plate-Type Clutch or Brake 851 22-12 Caliper Disc Brakes 854 22-13 Cone Clutch or Brake 854 22-14 Drum Brakes 855 22-15 Band Brakes 860 22-16 Other Types of Clutches and Brakes 862 References 864 Internet Sites 864 Problems 865 23 Design Projects 867 23-1 Objectives of This Chapter 868 23-2 Design Projects 868 Appendices A-1 Appendix 1 Properties of Areas A-1 Appendix 2 Preferred Basic Sizes and Screw Threads A-3 Appendix 3 Design Properties of Carbon and Alloy Steels A-6 Appendix 4 Properties of Heat-Treated Steels A-8 Appendix 5 Properties of Carburized Steels A-11 Appendix 6 Properties of Stainless Steels A-12 Appendix 7 Properties of Structural Steels A-13 Appendix 8 Design Properties of Cast Iron A-14 Appendix 9 Typical Properties of Aluminum A-15 Appendix 10 Typical Properties of Zinc Casfing Alloys A-16 Appendix 11 Properties of Titanium Alloys A-16Contents Xlll Appendix 12 Properties of Bronzes A-17 Appendix 13 Typical Properties of Selected Plastics A-17 Appendix 14 Beam-Deflection Formulas A-18 Appendix 15 Stress Concentration Factors A-27 Appendix 16 Steel Structural Shapes A-31 Appendix 17 Aluminum Structural Shapes A-37 Appendix 18 Conversion Factors A-39 Appendix 19 Hardness Conversion Table A—10 Appendix 20 Geometry Factor / for Pitting for Spur Gears A-+1 Answers to Selected Problems A-44 Index 1-1
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