Design Of Machine Elements Premium Lecture Notes Contains all units by Mr. Krishnamoorthy. Specially for Mechanical Engineering Candidates. Syllabus Covered based on Anna University B.E Mechanical Engineering
Special Thanks To:
Mr.N. Krishnamoorthy
P.T.Lee Chengalvaraya Naicker Engg College
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CONTENTS:
Unit-1
STEADY STRESSES AND VARIABLE STRESSES IN MACHINE MEMBERS
UNIT-2
SHAFTS AND COUPLING
UNIT-3
TEMPORARY AND PERMANENT JOINTS
UNIT-4
ENERGY STRONG ELEMENTS AND ENGINE COMPONENTS
UNIT-5
BEARINGS DESIGN
Unit-1
STEADY STRESSES AND VARIABLE STRESSES IN MACHINE MEMBERS
Introduction
Definition of design
Design process
Factors influencing machine design
Selection of materials based on mechanical properties
Fits and tolerance
Fits types:
1. Clearance fits
2. Interference fits
3. Transition fits
Direct bending and torsional stress
1. Direct stress
2. Bending stress
Calculation of principle stress for various load combination
1. Normal stress
2. Tangential stress
Eccentric loading
Design of curved beams – crane hook and c- frame
Factor of safety
Theories of failure
Design of crane hooks
Solved problems on theories of failure
Stress concentration
Terms used in variable stress condition
1. Load factor
2. Surface finish factor
3. Size factor
4. Reliability factor
5. Miscellaneous factor
UNIT-2
SHAFTS AND COUPLING
Design of shaft based on strength against static loading
Design of shaft based on rigidity
Design of shaft based on critical speed
Design of keys and keyway
Design of splines
Design of rigid and flexible coupling
Classification of coupling
Flange coupling
1. Unprotected type flange coupling
2. Protected type flange coupling
3. Marine type flange coupling
Design procedure for flange coupling
UNIT-3
TEMPORARY AND PERMANENT JOINTS
Threaded fasteners
Design of blots for eccentric loading
Promblems
Design of welding joints
1. Types of welding joints
2. Basic weld symbols
3. Design of welding joints based formula
Pin joints
1. Cotter joints
2. Knukle joints
Design of socket and spigot cotter joints
Problems
Design of sleeve and cotter joints
Design of GIB and cotter joint for square rods
Design of knuckle joints
UNIT-4
ENERGY STRONG ELEMENTS AND ENGINE COMPONENTS
Various types of spring
1. Helical spring
2. Spiral spring
3. Leaf spring
4. Belleville spring
Problems
Design of torsion spring
Design of Belleville spring
Design of connecting rods
Design of crank shaft
UNIT-5
BEARINGS DESIGN
Problems
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