Theory of Machines
Theory of Machines
Teacher
Dr.P.S.V.RamanaRao
Category
Core Courses
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CUTM 1091(2-1-0)
Course Objectives
• To make the student conversant with commonly used mechanisms in various machines
• To develop skills for drawing velocity and acceleration diagram for linkages, cams, gears and other mechanisms
• To address the underlying concepts, methods and application of different machines.
• To understand the concepts of speed control mechanisms
• To understand the concepts of Vibration
Learning Outcomes
COs Course outcomes Mapping COs with POs (High-3, Medium-2, Low-1)
CO1 Able to gain knowledge on different PO1(2)
power transmission tools
CO3 To Interpret the simple given dynamic PO2(3)
problems and solve them for positions,
velocities and accelerations, etc
CO4 Able to improve the design of mechanism PO3(3)
by using computer
On completion of the course, students will be able to–
• Identify mechanisms in real life applications.
• Perform velocity and acceleration diagrams for various mechanisms.
• Able to know various power transmission systems
• To know the importance of Gyroscope, cams and Governors.
• To perform static and dynamic balance of simple mechanisms.
• To have understanding about the effect of vibration and vibration control
Course Syllabus
Module I: MECHANISMS (03hrs)
Theory
Planar Mechanisms: Kinematic Link, Pair, Chain and Mechanism, Types of Links and Joints, Degree of Freedom, Grashof’s Law for four bar Mechanism; Inversions of four bar Mechanism, Single Slider Crank Mechanism and Double Slider Crank Mechanism;
Practice (01 hrs)
1. Position Analysis of Grashof and Non-Grashof four bar Mechanism.
2. Position Analysis of Slider Crank Mechanism, Scotch Yoke Mechanism and EllipticalTrammel
Module II: MOTION ANALYSIS(03hrs)
Theory
Instantaneous Centre of Rotation, Number and Types of Instantaneous Centers, Kennedy Theorem, Relative Velocity Method, Velocities and acceleration in Four Bar and Slider Crank Mechanism.
Practice (02 hrs)
3. Instantaneous Center Method to Find Velocity of Various Mechanisms.
4. Velocity Analysis of Grashof and Non-Grashof Four Bar Mechanism
5. Velocity Analysis of Slider Crank Mechanism .
6. Acceleration Analysis of Slider Crank Mechanism
Module III: POWER TRANSIMISSION SYSTEMS(04hrs)
Theory
Classification and Basic Terminology, Fundamental Law of Gearing,
Gear trains: Simple, Compound, Reverted and Epi-Cyclic Gear Trains
Flat Belt, V Belt and Rope Drives and chain drives ,Length of open and cross belt drive, Power Transmitted by Belts and Ropes.
Practice (01 hrs)
7.Length of open and cross belt drive
Module IV: CAMS& GOVERNORS(03hrs)
Theory
Various Types of Cams and Followers; Displacement, Velocity and Acceleration Diagrams for Different Follower Motions; Nomenclature of Cam Profile;
Classification of Governors, Working principle of various type of centrifugal governors, Terminology related to Governor.
Practice (03 hrs)
8. Construction of cam profile using Solid works software
9. Cam analysis of a Knife edge and roller follower
10.To calculate sensitiveness of Governor
Module V: GYROSCOPE (02hrs)
Theory
Gyroscopic Couple, Gyroscopic Effect on Naval Ships and Aeroplanes, Stability of four wheeler
Practice (01 hrs)
11. Determine Gyroscopic Couple on Motorized Gyroscope
Module VI: BALANCING(03hrs)
Theory
Static and Dynamic Balancing, Balancing of Several Masses Revolving in the Same Plane and Different Planes, Balancing of Reciprocating Mass
Practice (02 hrs)
12. Balancing of Several Masses Revolving in the Same and Different Planes
13. Balancing of Reciprocating masses by Simulation
Module VII: VIBRATION (03hrs)
Theory
Basic Concepts and Types of Vibration, Methods of Vibration Analysis, Free Undamped Longitudinal, Transverse and Torsional Vibrations, Damped Free Vibrations, Logarithmic Decrement,Vibration Isolation and Transmissibility;
Practice (02 hrs)
14. Determination of Critical or Whirling Speed of Shaft
15. Simple and Compound Pendulum
Text Books:
1.S. S. RattanTheory of Machines,. Tata McGraw-Hill Education, 2014
2. Joseph E Shingley Theoryof MachinesandMachinsms oxford publication
Reference Books:
1. Singh. S, Theory of Machines, Khanna publishers.
2. Norton R.L, Design of Machinery, McGraw-Hill.
Course outline Prepared by; Dr.P.S.VRamana Rao,
PrajnaParamitaDebata
Date: 28.5.2020
Session Plan
Session 1
Planar Mechanisms: Kinematic Link, Pair, Chain and Mechanism, Types of Links and Joints, Degree of Freedom,
videolink-kinematic pair
video link- kinematic chain and mechanism
video link- types of links
http://courseware.cutm.ac.in/wp-content/uploads/2023/07/Session-plan-1.pdf
Session 2
Grashof’s Law for four bar Mechanism; Inversions of four bar Mechanism, Single Slider Crank Mechanism
video link- Grashof’s law for four bar mechanism
videolink-Inversions of four ba
Session 3
Session 4
Practice (01 hrs)
1. Position Analysis of Grashof and Non-Grashof four bar Mechanism.
2. Position Analysis of Slider Crank Mechanism, Scotch Yoke Mechanism and EllipticalTrammel
virtual lab - Position Analysis of Grashof and Non-Grashof four bar Mechanism
Session 5
Instantaneous Centre of Rotation, Number and Types of Instantaneous Centers, Kennedy Theorem, Relative Velocity Method,
http://courseware.cutm.ac.in/wp-content/uploads/2023/07/Instantanesous-center-session5-and-6.pdf
video link- Instantaneous centre
video link- Kennedy theorem
video link- relative velocity method
Session 6
Velocities in Four Bar and Slider Crank Mechanism.
http://courseware.cutm.ac.in/wp-content/uploads/2023/07/Instantanesous-center-session5-and-6.pdf
video link-Velocities in four bar mechanism
video link- Velocities in slider crank mechanism
Session 7
acceleration in Four Bar and Slider Crank Mechanism.
video link- Acceleration diagram of single slider-crank mechanism
http://courseware.cutm.ac.in/wp-content/uploads/2023/07/Instantanesous-center-session7.pdf
Session 8
Practice (1 hrs)
3. Instantaneous Center Method to Find Velocity of Various Mechanisms.
4. Velocity Analysis of Grashof and Non-Grashof Four Bar Mechanism
virtual lab - Instantaneous Center Method
virtual lab - Velocity Analysis of Grashof and Non-Grashof Four Bar Mechanism
Session 9
Practice (01 hrs)
5. Velocity Analysis of Slider Crank Mechanism .
6. Acceleration Analysis of Slider Crank Mechanism
virtual lab - Velocity Analysis of Slider Crank Mechanism
virtual lab - Acceleration Analysis of Slider Crank Mechanism
Session 10
Classification and Basic Terminology, Fundamental Law of Gearing,
video link1- Classification and basic terminology of gear
video link2-Classification and basic terminology of gear
Session 11
Gear trains: Simple, Compound, Reverted and Epi-Cyclic Gear Trains
video link -gear trains
video link 2- gear trains
video link 3- gear trains
Session 12
Flat Belt, V Belt , Length of open and cross belt drive, .
video link-belt and rope drives
video link 2- belt and rope drives
video link3- belt and rope drives
Session 14
Practice (01 hrs)
7.Length of open and cross belt drive
Session15
Various Types of Cams and Followers; Displacement, Nomenclature of Cam Profile;
Session 16
Velocity and Acceleration Diagrams for Different Follower Motions;
Session 17
Classification of Governors, Working principle of various type of centrifugal governors, Terminology related to Governor
video link1- Governors
video link 2- governors
video link3-Governors
Session 18
Practice (01 hrs)
8. Construction of cam profile using Solid works software
Session 19
Practice (01 hrs)
9. Cam analysis of a Knife edge and roller follower
Session 20
Practice (01 hrs)
10.To calculate sensitiveness of Governor
Session 21
Gyroscopic Couple, Gyroscopic Effect on Naval Ships
video link1- gyroscopic couple
video link 2- gyroscopic couple
video link3- gyroscopic couple
Session 22
, Gyroscopic Effect on Aeroplanes, Stability of four wheeler
Session 23
Practice (01 hrs)
11. Determine Gyroscopic Couple on Motorized Gyroscope
Session 24
Static and Dynamic Balancing, Balancing of Several Masses Revolving in the Same Plane
Session 25
Balancing of Several Masses Revolving in the Different Planes,
Session 27
Practice (01 hrs)
12. Balancing of Several Masses Revolving in the Same and Different Planes
Session 28
Practice (01 hrs)
13. Balancing of Reciprocating masses by Simulation
Session 29
Basic Concepts and Types of Vibration, Methods of Vibration Analysis,
video link1- Basic concepts of vibration
video link2- basics of vibration
videolink 3-vibrations terminology
Session 30
Free Undamped Longitudinal, Transverse and Torsional Vibrations, Damped Free Vibrations
video link- Damped free vibrations and logarithmic decrement
Session 31
,Vibration Isolation and Transmissibility;
Session 32
Practice (01 hrs)
14. Determination of Critical or Whirling Speed of Shaft
Session 33
Practice (01 hrs)
15. Simple and Compound Pendulum
Case Studies
Case Studies
Our Main Teachers
Dr.P.S.V.RamanaRao Dean Academics Centurion University of Technology and Management, Andhra Pradesh Dr P.S.V.RamanaRao is presently working as Dean,Academics in Centurion University of Technology& Management, Visakhapatnam Andhra Pradesh. Prior to this position he worked as Head & Professor in the department of Mechanical Engineering since 2001.He obtained his Ph.D from Andhra University, Visakhapatnam. He had his […]