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| موضوع: كتاب Machine Elements In Mechanical Design الأحد 22 أبريل 2012 - 18:23 | |
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تذكير بمساهمة فاتح الموضوع : أخوانى فى الله أحضرت لكم كتاب
Machine Elements In Mechanical Design Robert L. Mott, RE University of Dayton
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Contents PART I Principles of Design and Stress Analysis The Nature of Mechanical Design The Big Picture You Are the Designer Objectives of This Chapter The Mechanical Design Process Skills Needed in Mechanical Design Functions, Design Requirements, and Evaluation Criteria Example of the Integration of Machine Elements into a Mechanical Design Computational Aids in This Book Design Calculations Preferred Basic Sizes, Screw Threads, and Standard Shapes Unit Systems Distinction among Weight, Force, and Mass References Internet Sites Problems Materials in Mechanical Design The Big Picture You Are the Designer Objectives of This Chapter Properties of Materials Classification of Metals and Alloys Variability of Material Properties Data Carbon and Alloy Steel Conditions for Steels and Heat Treatment Stainless Steels Structural Steel Tool Steels Cast Iron Powdered Metals Aluminum Zinc Alloys Titanium Copper, Brass, and Bronze NickelBased Alloys Plastics Composite Materials Materials Selection References Internet Sites Problems Stress and Deformation Analysis The Big Picture You Are the Designer Objectives of This Chapter Philosophy of a Safe Design Representing Stresses on a Stress Element Direct Stresses: Tension and Compression Deformation under Direct Axial Loading Direct Shear Stress Relationship among Torque, Power, and Rotational Speed Torsional Shear Stress Torsional Deformation Torsion in Members Having Noncircular Cross Sections Torsion in Closed, ThinWalled Tubes Open Tubes and a Comparison with Clo.sed Tubes Vertical Shearing Stress Special Shearing Stress Formulas VII Vlll Contents Stress Due to Bending Flexural Center for Beams Beam Deflections Equations for Deflected Beam Shape Beams with Concentrated Bending Moments Combined Normal Stresses: Superposition Principle Stress Concentrations Notch Sensitivity and Strength Reduction Factor References Internet Sites Problems Combined Stresses and Mohr's Circle The Big Picture You Are the Designer Objectives of This Chapter General Case of Combined Stress Mohr's Circle Mohr's Circle Practice Problems Case When Both Principal Stresses Have the Same Sign Mohr's Circle for Special Stress Conditions Analysis of Complex Loading Conditions References Internet Site Problems Design for Different Types of Loading The Big Picture You Are the Designer Objectives of This Chapter Types of Loading and Stress Ratio Endurance Strength Estimated Actual Endurance Strength, .v,' Example Problems for Estimating Actual Endurance Strength Design Philosophy Design Factors Predictions of Failure Design Analysis Methods General Design Procedure Design Examples Statistical Approaches to Design Finite Life and Damage Accumulafion Method References Problems Columns The Big Picture You Are the Designer Objectives of This Chapter Properties of the Cross Section of a Column End Fixity and Effective Length Slenderness Ratio Transition Slenderness Ratio Long Column Analysis: The Euler Formula Short Column Analysis: The J. B. Johnson Formula Column Analysis Spreadsheet Efficient Shapes for Column Cross Sections The Design of Columns Crooked Columns Eccentrically Loaded Columns References Problems PART II Design of a Mechanical Drive Belt Drives and Chain Drives The Big Picture You Are the Designer Objecfives of This Chapter Types of Belt Drives Contents IX VBelt Drives ^ VBelt Drive Design Chain Drives Design of Chain Drives References Internet Sites Problems Kinematics of Gears The Big Picture You Are the Designer Objectives of This Chapter Spur Gear Styles Spur Gear Geometry: InvoluteTooth Fonn Spur Gear Nomenclature and GearTooth Features Interference between Mating Spur Gear Teeth Velocity Ratio and Gear Trains Helical Gear Geometry Bevel Gear Geometry Types of Wormgearing Geometry of Worms and Wormgears Typical Geometry of Wormgear Sets Train Value for Complex Gear Trains Devising Gear Trains References Internet Sites Problems Spur Gear Design The Big Picture You Are the Designer Objectives of This Chapter Concepts from Previous Chapters Forces, Torque, and Power in Gearing ^ Gear Manufacture Gear Quality Allowable Stress Numbers Metallic Gear Materials Stresses in Gear Teeth Selection of Gear Material Based on Bending Stress Pitting Resistance of Gear Teeth Selection of Gear Material Based on Contact Stress Design of Spur Gears Gear Design for the Metric Module System ComputerAided Spur Gear Design and Analysis Use of the Spur Gear Design Spreadsheet PowerTransmitting Capacity Practical Considerations for Gears and Interfaces with Other Elements Plastics Gearing References Internet Sites Problems Helical Gears, Bevel Gears, and Wormgearing The Big Picture You Are the Designer Objectives of This Chapter Forces on Helical Gear Teeth Stresses in Helical Gear Teeth Pitting Resistance for Helical Gear Teeth Design of Helical Gears Forces on Straight Bevel Gears Bearing Forces on Shafts Carrying Bevel Gears Bending Moments on Shafts Carrying Bevel Gears Stresses in Straight Bevel Gear Teeth Design of Bevel Gears for Pitting Resistance Forces, Friction, and Efficiency in Wormgear Sets Stress in Wormgear Teeth Surface Durability of Wormgear Drives References Internet Sites Problems Contents Keys, Couplings, and Seals The Big Picture You Are the Designer Objectives of This Chapter Keys Materials for Keys Stress Analysis to Determine Key Length Splines Other Methods of Fastening Elements to Shafts Couplings Universal Joints Retaining Rings and Other Means of Axial Location Types of Seals Seal Materials References Internet Sites Problems Shaft Design The Big Picture You Are the Designer Objectives of This Chapter Shaft Design Procedure Forces Exerted on Shafts by Machine Elements Stress Concentrations in Shafts Design Stresses for Shafts Shafts in Bending and Torsion Only Shaft Design Example Recommended Basic Sizes for Shafts Additional Design Examples Spreadsheet Aid for Shaft Design Shaft Rigidity and Dynamic Considerations Flexible Shafts References Internet Sites Problems Tolerances and Fits The Big Picture You Are the Designer Objectives of This Chapter Factors Affecting Tolerances and Fits Tolerances, Production Processes, and Cest Preferred Basic Sizes Clearance Fits Interference Fits Transition Fits Stresses for Force Fits General Tolerancing Methods Robust Product Design References Internet Sites Problems Rolling Contact Bearings The Big Picture You Are the Designer Objectives of This Chapter Types of Rolling Contact Bearings Thru.st Bearings Mounted Bearings Bearing Materials Load/Life Relationship Bearing Manufacturers' Data Design Life Bearing Selection: Radial Loads Only Bearing Selection: Radial and Thmst Loads Combined Mounting of Bearings Tapered Roller Bearings Practical Considerations in the Application of Bearings Importance of Oil Film Thickness in Bearings Life Prediction under Varying Loads References Internet Sites Problems Contents XI Completion of the Design of a Power Transmission The Big Picture Objectives of This Chapter Description of the Power Transmission to Be Designed Design Alternatives and Selection of the Design Approach Design Alternatives for the GearType Reducer General Layout and Design Details of the Reducer Final Design Details for the Shafts Assembly Drawing References Internet Sites PART III Design Details and Other Machine Elements Plain Surface Bearings The Big Picture You Are the Designer Objectives of This Chapter The Bearing Design Task Bearing Parameter, [xnip Bearing Materials Design of BoundaryLubricated Bearings FullFilm Hydrodynamic Bearings Design of FullFilm Hydrodynamically Lubricated Bearings Practical Considerations for Plain Surface Bearings Hydrostatic Bearings Tribology: Fricfion, Lubrication, and Wear References Internet Sites Problems Linear Motion Elements The Big Picture You Are the Designer Objectives of This Chapter Power Screws Ball Screws Application Considerations for Power Screws and Ball Screws References Internet Sites Problems Fasteners The Big Picture You Are the Designer Objecfives of This Chapter Bolt Materials and Strength Thread Designations and Stress Area Clamping Load and Tightening of Bolted Joints Extemally Applied Force on a Bolted Joint Thread Stripping Strength Other Types of Fasteners and Accessories Other Means of Fastening and Joining References Internet Sites Problems Springs The Big Picture You Are the Designer Objectives of This Chapter Kinds of Springs Helical Compression Springs Stresses and Deflection for Helical Compression Springs Analysis of Spring Characteristics Design of Helical Compression Springs Extension Springs Helical Torsion Springs Improving Spring Performance by Shot Peening Spring Manufacturing References Internet Sites Problems XII Contents Machine Frames, Bolted Connections, and Welded Joints The Big Picture You Are the Designer Objectives of This Chapter Machine Frames and Structures Eccentrically Loaded Bolted Joints Welded Joints References Internet Sites Problems Electric Motors and Controls The Big Picture You Are the Designer Objecfives of This Chapter Motor Selection Factors AC Power and General Information about AC Motors ^ Principles of Operation of AC Induction Motors AC Motor Performance ThreePhase, SquirrelCage Induction Motors SinglePhase Motors AC Motor Frame Types and Enclosures Controls for AC Motors DC Power DC Motors DC Motor Control Other Types of Motors References Internet Sites Problems Motion Control: Clutches and Brakes The Big Picture You Are the Designer Objectives of This Chapter Descriptions of Clutches and Brakes Types of Friction Clutches and Brakes Performance Parameters Time Required to Accelerate a Load Inertia of a Sy.stem Referred to the Clutch Shaft Speed Effective Inertia for Bodies Moving Lineariy Energy Absorption: HeatDissipation Requirements Response Time Friction Materials and Coefficient of Friction PlateType Clutch or Brake Caliper Disc Brakes Cone Clutch or Brake Drum Brakes Band Brakes Other Types of Clutches and Brakes References Internet Sites Problems Design Projects Objectives of This Chapter Design Projects Appendices A Appendix Properties of Areas A Appendix Preferred Basic Sizes and Screw Threads A Appendix Design Properties of Carbon and Alloy Steels A Appendix Properties of HeatTreated Steels A Appendix Properties of Carburized Steels A Appendix Properties of Stainless Steels A Appendix Properties of Structural Steels A Appendix Design Properties of Cast Iron A Appendix Typical Properties of Aluminum A Appendix Typical Properties of Zinc Casfing Alloys A Appendix Properties of Titanium Alloys A Contents Xlll Appendix Properties of Bronzes A Appendix Typical Properties of Selected Plastics A Appendix BeamDeflection Formulas A Appendix Stress Concentration Factors A Appendix Steel Structural Shapes A Appendix Aluminum Structural Shapes A Appendix Conversion Factors A Appendix Hardness Conversion Table A— Appendix Geometry Factor / for Pitting for Spur Gears A Answers to Selected Problems A
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