Savitribai Phule Pune University, Maharashtra, Mechanical Engineering Semester 6, Design of Transmission Systems Syllabus

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Unit - 1 Spur And Helical Gears

Unit 1

Spur and Helical Gears

1.1 Introduction to gears Material selection for gears Modes of gear tooth failure Gear Lubrication Methods

1.2 Spur Gears Number of teeth and face width

1.3 Force Analysis

1.4 Beam Strength Lewis Equation

1.5 Velocity factor

1.6 Service factor

1.7 Load concentration factor

1.8 Effective load on gear

1.9 Wear strength Buckingham’s equation

1.10 Estimation of module based on beam and wear strength

1.11 Estimation of dynamic tooth load by velocity factor and Buckingham’s equation

1.12 AGMA American Gear Manufacturing Association approach of Gear design Only mathematical relations no numerical

1.13 Helical Gears Force analysis of Helical Gear

1.14 Beam Strength of Helical Gear

1.15 Wear strength and estimation of effective load based on Velocity factor Barth factor and Buckingham’s equation. No numerical on force analysis of helical

Unit - 2 Bevel and Worm Gear

Unit 2

Bevel and Worm Gear

2.1 Bevel Gears Types of Bevel gears Terminology Virtual number of teeth and force analysis of Straight Bevel Gear

2.2 Design of Straight Bevel Gear based on Beam Strength

2.3 Wear strength and estimation of effective load based on Velocity factor Barth factor and Buckingham’s equation. Simple numerical to be taken no design calculations

2.4 Worm Gears Worm and worm gear terminology

2.5 Proportions of worm and worm gears

2.6 Force analysis of worm gear drives

2.7 Friction in Worm gears

2.8 Efficiency of the worm gear

2.9 Worm and worm gear material

2.10 Strength and wear ratings of worm gears Bending stress factor speed factor surface stress factor zone factor

2.11 IS 14431974

2.12 Thermal consideration in worm gear drive

Unit - 3 Sliding And Rolling Contact Bearing

Unit 3

Sliding and Rolling Contact Bearing

3.1 Sliding contact bearing Theoretical treatment only Introduction to sliding contact bearing

3.2 Classification of sliding contact bearing

3.3 Reynolds’s equation 2D

3.4 Petroff’s equations

3.5 Sommerfeld number

3.6 Parameters of bearing design

3.7 Rolling Contact Bearings Types of rolling contact Bearings and its selection

3.8 Static load carrying capacity

3.9 Dynamic load carrying capacity

3.10 Stribeck’s Equation

3.11 Equivalent bearing load

3.12 Load life relationship

3.13 Selection of bearing life

3.14 Selection of rolling contact bearings from manufacturer’s catalogue

3.15 Design for cyclic loads

3.16 Types of failure in rolling contact bearings causes and remedies. Simple Numerical treatment

Unit - 4 Design Of Clutches And Brakes

Unit 4

Design of Clutches and Brakes

4.1 Clutches Introduction Types of clutches Material

4.2 Positive Clutches Friction Clutches Single plate multi plate and cone and centrifugal clutches

4.3 Application of friction clutches in automotive and industrial machinery sector

4.4 Brakes Introduction Types of brakes Material

4.5 Design of band brake external and internal expanding shoe brakes

4.6 Design of disc brakes

4.7 Application of brakes in automotive and industrial machinery sector

Unit - 5 Design Of M-C Tool Gear Box

Unit 5

Design of MC tool Gear Box

5.1 Introduction to machine tool gearbox Classification Basic considerations in design of drives and its applications

5.2 Determination of variable speed range Graphical representation of speed and structure diagram

5.3 Ray diagram selection of optimum ray diagram

5.4 Kinematic Gearing Diagram Deviation diagram

5.5 Difference between numbers of teeth of successive gears in a change gear box.

Unit - 6 Transmission System In Hybrid Electric Vehicle

Unit 6

Transmission system in Hybrid Electric Vehicle

6.1 Introduction Types of Hybrid Electric Vehicle Basic Classification Basic mode of operation other derivatives Degree of hybridization

6.2 Power Split Devices Simple and EM compound PSD HEV component characteristics

6.3 The IC Engines Electric machines Battery HEV performance analysis

6.4 Series HEV parallel HEV HEV component sizing General Considerations sizing for performance optimum sizing and power management Control Potential

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