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 |  موضوع: كتاب Elements of Machine Design الإثنين 22 نوفمبر 2021, 10:48 pm | |
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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
و المحتوى كما يلي :
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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