CHHATTISGARH SWAMI VIVEKANAND TECHNICAL UNIVERSITY, BHILAI (C G)
Semester: VI Branch: Mechanical Engg.
Subject: Machine Design – II
Note: 1) Design data book by PSG and ISI data sheets are allowed in the examination.
2) The duration of the paper is 4 (four) hours.
UNIT – I
Spring materials and their mechanical properties, equation for stress and deflection, helical coil springs of circular
section for tension, compression and torsion, dynamic loading, fatigue loading, Wahl line, leaf spring and laminated
UNIT – II
Gear Drives, Classification of Gears, Selection of Type of Gears, Law of Gearing, Force Analysis, Gear Tooth
Failures, Selection of Material, Number of Teeth, Face Width, Beam Strength of Gear Tooth, Effective Load on
Gear Tooth, Estimation of Module Based on Wear Strength, Lewis equation, Gear Design for Maximum Power
Transmitting Capacity, Gear Lubrication.
Helical Gears, Terminology of Helical Gears, Virtual Number of Teeth, Tooth Proportions, Force Analysis, Beam
Strength of Helical Gears, Effective Load on Gear Tooth, Wear Strength of Helical Gears.
Bevel Gears, Terminology of Bevel Gears, Force Analysis, Beam strength of Bevel Gears, Wear Strength of Bevel
Gears, Effective Load on Gear Tooth.
UNIT – IV
Rolling Contact Bearings
Types of ball and roller bearings, selection of bearing for radial and axial load, bearing life, Mounting and lubrication,
shaft scales – contact type and clearance type.
Types of lubrication, viscosity, Hydrodynamic theory of lubrication, Sommerfield number, heat balance, selfcontained
bearings, bearing materials.
UNIT – V
Friction clutches, Friction materials, Torque transmitting capacity, Single & Multiple plate clutch, centrifugal clutches.
Belt and Rope Drive:
Flat and V-belts, belt constructions, geometrical relationships for length of the belt, analysis of belt tensions,
condition for maximum power, selection of flat & V-belts, adjustment of belt tensions, Wire ropes, stresses in wire
1. Design of Machine Elements from V.B. Bhandari, TMH Publications.
2. Machine Design by Shigley – McGraw Hill Pub.
1. Machine Design by Movnin – MIR Publishers
2. Machine Design by Sharma & Agrawal – Katson publications
3. Principles of Mechanical Design by R. Phelan – McGraw Hill Pub.
4. Machine Design by Suderraj Murthy – Khanna Publishers
Machine Design, theory & Practice by Michels Walter, J, Wilson Charles E. & Add, MacMilan Publishers, New York.