Elements of Machine Design

Elements of Machine Design
اسم المؤلف
N. G. Pandya , C. S. Shah
التاريخ
22 نوفمبر 2021
المشاهدات
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Elements of Machine Design 7 Ed
N. G. Pandya
B.Sc., B.Sc. (Eng.) , Dr. lng. (Germany), F.I.E. (India), V.D.I .
Member
, American Society for Engineering Education
Professor of Mechanical Engineering
Birla Vishvakarma Mahavidyalaya
AND
C. S. Shah
B.Sc. (Eng.), Dr. Ing. (Germany), F.I.E. ( India)
Professor of Mechanical Engineering
Birla Vishvakarma Mahavidyalaya
{ Engineering College )
VALLABH VIDYANAGAR (ANAND)
ELEMENTS OF MACHINE DESIGN
CONTENTS
CHAPTER I
MATERIALS OF CONSTRUCTION AND THEIR
PROPERTIES
Introduction

  • General consideration – Structure of
    materials – Mechanical properties of materials of construction
  • Determination of mechanical properties –
    Fabrication characteristics and processes of fabrication –
    Non-ferrous metals and alloys – Available sizes –
    Accuracy – Finishing processes – Non-metallic materials
  • Plastics – Examples I
    CHAPTER 11
    PAGES
    1-62
    DESIGN CONSIDERATIONS IN MACHINE PARTS
    Strain – Stress-Strain diagram:
    Modulus of Elasticity – Poisson’s ratio – Modulus of
    rigidity — Bulk modulus – Basic requirements of the
    machine elements – Factor of safety: Selection of allowable stresses – Procedure for designing a machine
    element
  • Tensile stress – Compressive stress – Shearing
    stress
  • Bearing pressure intensity – Bending – Shear stresses in abeam – Torsion – Eccentric loading – Combined
    stresses: Bending combined with direct stress – Offset
    connecting links and C shaped frames – Shearing combined with tensile and compressive stresses – Theories of
    elastic failure – Designing for impact loads – Stress
    concentration – Notch sensitivity – – Effect of repeated
    application of load – Fluctuating stress for ductile materials
  • Light weight and minimum dimensions – Elastic
    matching – Temperature stress – Examples II .
    CHAPTER III
    Loads Stress
    63-165
    CYLINDERS, TANKS AND PIPES
    Introduction
  • Types of vessels – Design of thin cylinders
  • Design of thin spherical shell – Cylindrical shell
    with hemispherical ends – – Design of pipes – Design of
    thick cylinders – Design equation for thick cylinder –
    Examples III . . 166-195X CONTENTS
    CHAPTER IV
    RIVETED JOINTS
    Introduction
  • Rivets – Rivet heads – Types of riveted
    joints – Caulking and fullering – Design of a riveted joint
    for boiler work
  • Efficiency of a riveted joint – Joints for
    storage tanks – Lozenge joint – Eccentric loads on riveted
    connections
  • Examples IV . . 196-237
    CHAPTER V
    BOLTS, NUTS AND SCREWS
    Introduction
  • Definitions – Forms of screw threads –
    Advantages of square threads over V threads – Screw
    fastenings – Locking devices for nuts – Washers – Eye
    bolt – Efficiency of threads – Stresses in screw fastenings – Initial stresses – Stress due to external forces –
    Stresses due to combined load – Bolts of uniform
    strength – Screwed boiler stays – Bolts subject to
    shear – Bolts under eccentric loading – Design of a
    nut – Power transmitting capacity of set screws –
    Examples V . 238-281
    CHAPTER VI
    COTTER AND KNUCKLE JOINTS
    Introduction Design of cottered joints – Gib and cotter
  • Connection of piston rod to crosshead – Cotter foundation bolts – Design of a knuckle joint: Introduction – Joint
    of suspension links – Design of a coupler or turnbucklc –
    Examples VI . 282-315
    CHAPTER VII
    SHAFTS, KEYS AND COUPLINGS
    Introduction – Materials and design stresses – Design of
    axles
  • Design of shafts on the basis of strength – – Design
    of shaft on the basis of rigidity – Design of hollow and
    square shafts – Forms of keys – Keys – Design of sunk
    keys – Effect of keyways in sunk keys – Taper pin –
    Feather keys – Force and shrink fits – Couplings:
    Introduction Sleeve coupling or muff coupling – CONTENTS xi
    Clamp or compression coupling – Flange coupling –
    Marine type of flange coupling – Flexible coupling –
    Bushed pin type of flexible coupling – Bibby type of
    flexible coupling – Leather pad type flexible coupling –
    Oldham’s coupling – Universal coupling – Safety
    coupling – Examples VII
    CHAPTER VIII
    . 316-395
    SPRINGS
    Introduction
  • Close coiled helical spring subjected to
    axial loading: circular wire – Helical springs of noncircular wire
  • Concentric helical springs – General
    considerations in design of compression and tension springs
  • Torsion helical springs – Spiral springs – Leaf springs
  • – Belleville springs – Energy storage capacity –
    Examples VIII
    CHAPTER IX
    . 396-442
    BEARINGS
    Classification – Bearing area – Sliding bearings: Solid
    journal bearings – Divided journal bearing: Plummer
    block
  • Lubrication methods – Oil Grooving – Heating
    of bearings – Design procedure for journal bearings – *
    Bearing materials – Design of bearing caps and bolts –
    Foot step or pivot bearings – Collar bearings – Antifriction bearings – – Radial ball bearings – Roller bearings – Selection of ball and roller bearings – Bearing
    load
  • Equivalent bearing load – Carrying capacity and
    life
  • Relationship between load and life – Requisite
    bearing life for different types of machines – Life of
    Timken Bearings – Influence of high temperature on
    load carrying capacity – Friction in rolling bearings –
    Comparison of sleeve and rolling bearings –
    Examples IX .
    CHAPTER X
    . 443-502
    STRUTS AND COLUMNS
    Introduction – Euler’s formula – End fixity coefficients
    Radius of gyration and plane of bending – Rankine’s
    formula – Telmajer’s formula Design of push rods
    Eccentrically loaded columns – Examples X . 503- 527xii CONTENTS
    CHAPTER XI
    POWER SCREWS
    Introduction – Form of threads – Force analysis –
    Design of a screw – Design of a nut – Compound screw
  • Differential screw – Ball screws – Examples XI
    CHAPTER XII
    . 528-567
    LEVERS
    Introduction
  • General procedure for design of levers –
    Hand lever
  • Foot lever – Cranked lever – Lever of a
    safety valve – Rocker arm for Diesel engines (Straight
    arm) – Angular levers – Design of an overhung
    crank
  • Design of a crank pin (overhung crank ) – Miscellaneous Examples – Examples XII
    CHAPTER XIII
    . 568-618
    BRACKETS
    Brackets – Hangers – Wall box – Design considerations
  • Examples XIII . 619-633
    CHAPTER XIV
    BELTS, PULLEYS AND CHAIN DRIVES
    Introduction – Materials for belts – Design of a belt –
    Design procedure for flat belts – V belt drive – Design of
    V flat drives – Pulleys: Materials and types – Cast
    iron pulleys – Design of a cast iron pulley – Steel pulleys
  • Wooden pulleys -Tight and loose pulleys – Speed cone
  • Short centre drive: Gravity idlers – Special tension
    adjusting belt drive – Chain Drives: Introduction –
    Roller chains – Design of Chain Drives – Examples XIV 634-630
    CHAPTER XV
    FLYWHEELS
    Introduction – Determination of a weight of a flywheel
    for given coeflicicnt of fluctuation of speed – Flywheel for
    punches ancT shear – Engine flywheels – Flywheel for
    Electric generators – Stresses in a rim of a flywheel –
    Design of a hub – Arms of a flywheel – Examples XV . 681-706CONTENTS xiii
    CHAPTER XVI
    GEARS
    Introduction
    terminology – Gear tooth forms – Accuracy of gears –
    Materials – Allowable stresses – Design considerations
  • Strength of gear teeth: Lewis equation – Dynamic
    tooth load – Design for wear – Gear wheel proportions
  • Internal gears – Racks – Design of helical gears:
    Introduction – Proportions for helical gears – Design of
    helical gear teeth – Herringbone gears – Rating of
    machine cut spur and helical gears – Design of bevel gears:
    Introduction – Definitions – Strength of bevel gear
    teeth – Constructional details – – Bearing loads – Design
    of worm gear: Introduction – Worm gear nomenclature
  • Strength of worm gear teeth – Bearing loads on the
    shafts – Examples XVI
    General characteristics
  • Spur gear
    . 707-795
    CHAPTER XVII
    WELDED CONNECTIONS
    Introduction – Welding processes – Types of welded
    joints – Working stresses in welds – Strength of welds
  • Special cases of fillet welds – Eccentric load on
    welded connections – Design procedure recommended
    by American Welding Society – Fillet welds under
    varying loads – Examples XVII . . 796-821
    CHAPTER XVIII
    DESIGN OF MISCELLANEOUS MACHINE PARTS-I
    ENGINES AND BOILERS
    Design of flat plates – Design of a piston for I.C. Engines
  • Design of crossheads – Design of connecting rods –
    Design of crankshafts – Design of a spring-loaded Hartnell
    governor – Design of an eccentric – Compensating ring
    for a manhole – Design of safety valves for boilers
  • Design of a steam stop valve – Design of tangent
    cams
  • Design of a valve gear for I.C. Engines –
    Examples XVIII . 822-943XIV CONTENTS
    CHAPTER XIX
    DESIGN OF MISCELLANEOUS MACHINE PARTS-II
    BRAKES AND CLUTCHES
    Hoisting equipments – Design of hoisting chains and
    drums – Design of a hoisting rope – Design of wire ropes –
    Stresses in curved beams
  • Design of a crane hook
    Brakes: Introduction – Types of Brakes – Design
    procedure for block brakes – Band brakes: Introduction – Design procedure for band brakes – Clutches:
    Introduction
  • Design procedure for clutches –
    Examples XIX 944-1006
    CHAPTER XX
    INTERNATIONAL SYSTEM OF UNITS
    (S. I. SYSTEM)
    Introduction – Units – Prefixes for Multiples and submultiples of units – Relation between the units of S.I. and
    MKS Systems – Illustrative examples – Examples XX 1007-1022
    CHAPTER XXI
    DESIGN PROJECTS
    Introduction Hand operated bench press – Reduction
    Gear – Project Exercises 1023-1044
    APPENDIX I TO XV
    List of Indian Standards: “Testing of Materials” – Indian
    Standard referred in the text – Preferred Numbers (Rounded values) – Properties of geometrical sections – Deflection formulas for machine parts – Metric threads –
    Common sizes of transmission shafts dimensions in mm –
    Imperial or Legal Standard Wire Gauge – Sizes of pulleys
    for flat and V belts – Width of flat cast iron and steel
    pulleys – Service factors for belt drive –
    Load carrying capacity of V belts – Worm data – Basic thickness of sheet and diameters of wire in millimetres 1045-1054

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