DETAILED SYLLABUS
1020235110 – ELEMENTS OF MACHINE DESIGN
Unit
Name of the Topic
Hours
1
Fundamentals of Design and Stresses
Introduction about Component Design. Engineering materials Factors affecting selection of materials BIS designation of Ferrous materials Preferred number -Factor of safety and allowable stress Stresses: Tension, Compression, Shear, bearing pressure intensity, crushing, bending and torsion- Problem. Composite Material, types, property and applications.
Creep strain and Creep Curve Fatigue, S-N curve, Endurance Limit Stress Concentration. Theories of Elastic Failures Principal normal stress theory, Maximum shear stress theory & Maximum distortion energy theory.
8
2
Design of Coupling and Keys
Couplings, Requirements of good couplings, types design of rigid protected type flange couplings marine coupling pin type flexible couplings (description only). Keys Types of keys design of sunk keys only Effect of keyways on shaft -problems.
9
3
Design of Flat Belts and V-Belts
Flat Belts: Types of belts materials for belt types of belt drives – Speed ratio -effect of slip length of flat belts -Tension Ratio. centrifugal tension – power transmitted-condition for maximum power – transmission – Initial Tension -Design procedure of flat belts Design of flat belt based on manufacturer’s data only problems.
V-belt drive comparison with flat belt drive – designation of V belts – length of belt – power transmitted – Design of V-belt using manufacturer’s data only – Problem.
10
Unit
Name of the Topic
Hours
4
Design of Bearings
Bearings: Classifications of bearings – sliding contact and rolling contact bearings radial and thrust bearings – roller bearing – types.
Designation of ball bearings materials used for bearings design of journal bearings heat generated, heat dissipated, cooling oil requirement – Problems.
Design of journal bearings problems, design based on approved date book only.
(No problem from dimensionless parameters)
9
5
Computer Aided Design (CAD) and Geometric Modelling
CAD- Roles of CAD in design – Development and uses applications, advantages, Product life cycle.
Design process: Sequential Engineering – Concurrent Engineering, Value Engineering, Lean Manufacturing System.
Geometric modelling, Solid modelling representation in CAD, Solid modelling approaches, Constructive Solid Geometry, Boundary representation – Comparison -Finite Element analysis – Prototype. (New Product Development technique)
9