Machine Design Full Premium Lecture Notes, Covers Entire Syllabus. Useful for Mechanical Engineers, Specially for Candidates appearing for GATE Exams.
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Key and cotter
Rectangular sunk key
Standard properties for key
Tapper key
Advantages
Gib head key
Cotter
Fatigue loading
Endurance limit
Alternating fatiguestresses
Fluctuating fatigue stresses
Fatigue life
Terminology
1. Stress cycle
2. Maximum stress
3. Minimum stress
4. Mean stress
5. Range of stress
6. Variable stress
7. Stress ratio
8. Amplitude ratio
Types of fatigue stresses
S-N diagram
Endurance strength
Stresses concentration
Fatigue strength reduction factor
Design equation used in fatigue loading
Soderberg’s equation
Combined loading
MECHANICAL POWER TRANSMISSION SYSTEM
Advantages
Classification of mechanical power transmission system
Factors to be considered while choosing MPTS
Types of flat belt drives
Velocity ratio
Effect of slip in velocity ratio
Open belt drive
Length of open belt drive
Length of cross belt drive
Difference in length
Ratio of belt tension
Expression for centrifugal tension
Power transmission capacity of a belt drive
Condition for maximum power transmission
INITIAL TENSION
Design of a flat belt
Crown
V- belts
Number of v- belts required
Fibre ropes
Design of spur gear
Design of shaft under variable notes
Diameter of the shaft by using theories of failure
GEAR DRIVES
Force analysis in spur gear
Checking NRT wear failure
Types of wear
1. Abrasive wear
2. Corrosive wear
3. Scoring
4. Pitting
Designation of wire ropes
WELDING JOINTS
Advantages over riveted joints
Disadvantages
Types of welds
1. Tack welds
2. Fillet welds
3. Bult welds
4. Edge welds
Types of fillet welds
Strength of fillet welds
1. Transverse fillet welds
2. Parallel fillet welded joints
Circular fillet welds under pure torsion
Classification
RIVITED JOINTS
LOZENGE JOINTS
Design riveted joints under eccentric loading
Design of bolted joints
Bolts of uniform strength
Design of bolts under eccentric loading
Eccentrically loaded
Welded joints
BEARINGS
Function of bearing
Classification of bearing
Hydrodynamic lubrication
Frigtion circle
Split bush bearing
Rolling contact berings
Dynamic capacity
1. Equivalent load
2. Life of AFB
3. Nominal or rated life
4. Average life
BASIC DYNAMIC CAPACITY
Application
Journal bearing
1. Sliding contanct
2. Radical
3. Hydrodynamic
Eccentricity
Procedure used in design of journal bearing
Thrust bearings
Single coller bearing
Uniform pressure theory
Multi coller bearing
Conical color bearing
Friction clutches
Cluthes
1. Jaw clutches
2. Friction clutches
Properties required for friction lining
Design of clutch
Helical compression springs
Springs
Function of springs
Expression for maximum shear stress induced
Expression for deflection
Design procedure
Minimum input data
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