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Course Title:
MECHANICS OF MACHINES |
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Scheme (L:T:P) : 4:0:0 |
Total
Contact Hours: 52 |
Course Code: 15ME32T |
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Type of Course: Lectures,
Self Study & Quiz |
Credit :04 |
Core/
Elective: Core |
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CIE- 25 Marks SEE-
100 Marks |
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Prerequisites: Knowledge of basic mathematics
and Applied Science, Engineering Graphics
Course Objectives:
1.
To provide basic concept of kinematics and
kinetics of machine elements.
2.
To study basics of power transmission.
3. To
study the effect of friction.
4. To
Study the essentiality of balancing.
5. To
acquaint with working principles of CAM Mechanism.
6. To study the different types
of vibration and to understand critical speed of shaft
Course Outcomes:
On successful completion of
the course, the students will be able to attain CO:
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Course
Outcome |
CL |
Linked PO |
Teaching Hrs |
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Analyze and Apply the knowledge of |
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these machines, mechanisms and |
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CO1 |
related terminologies in mechanical
engineering science in maintaining sustainable environment and its |
R/U/A/A n |
1,2,3,4,5,6 10 |
10 |
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impact on society |
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CO2 |
Select appropriate power transmission mechanisms |
R/U/A |
1,2,3,4,5,6 10 |
11 |
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CO3 |
Analyze the effect of friction on machine elements |
U/A/An |
1,2,3,4,5,6, 10 |
10 |
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CO4 |
Appreciate the
essentiality of balancing in Rotating Parts.. |
U/A |
1,2,3,4,5,6 10 |
07 |
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CO5 |
Construct CAM profile for the |
R/U/A |
1,2,3,4,5,6 |
10 |
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specific follower motion |
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10 |
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CO6 |
Understand the Terminology
and types associated with vibration in machine
elements |
R/U |
1,2, 10 |
04 |
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Total sessions |
52 |
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Legend:
R; Remember, U: Understand A: Application
COURSE-PO ATTAINMENT
MATRIX
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Course |
Programme Outcomes |
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
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MECHANICS OF MACHINES |
3 |
3 |
3 |
3 |
3 |
3 |
- |
- |
- |
3 |
Level 3- Highly Addressed, Level
2-Moderately Addressed, Level 1-Low Addressed.
Method is to relate
the level of PO with
the number of hours devoted
to the COs which address
the given PO. If
>40% of classroom sessions addressing a particular PO, it is considered that
PO is addressed at Level
3
If 25 to 40% of classroom sessions
addressing a particular PO, it is considered that PO is addressed at Level 2 If
5 to 25% of classroom sessions addressing a particular PO, it is considered that
PO is addressed at Level
1
If < 5% of
classroom sessions addressing a particular PO, it is considered that PO is
considered not-addressed.
COURSE CONTENT AND BLUE PRINT OF
MARKS FOR SEE/
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Unit No |
Unit Name |
Hour |
Questions to be set for
SEE/Marks |
Marks weightage |
weightage (%) |
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R |
U |
A |
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1 |
BASIC KINEMATICS |
10 |
5 |
5 |
20 |
30 |
21 |
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2 |
TRANSMISSION OF POWER |
11 |
5 |
5 |
20 |
30 |
21 |
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3 |
FRICTION |
10 |
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5 |
20 |
25 |
17 |
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4 |
BALANCING |
07 |
-- |
10 |
10 |
20 |
14 |
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5 |
CAM MECHANISAMS |
10 |
5 |
5 |
20 |
30 |
21 |
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6 |
MECHANICAL VIBRATIONS |
04 |
5 |
5 |
-- |
10 |
06 |
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Total |
52 |
20 |
35 |
90 |
145 |
100 |
Legend: R; Remember, U: Understand A: Application
Definition-Kinematic link or
element-Types of links-Kinematic pair–Types-Types of
constrained
Motions- Kinematic chain- Definition of Machine, Structure and Mechanism-
Difference between Machine and Structure ,Mechanism-Inversions-Types of
Kinematic Chains-Four Bar Chain- Beam Engine-Coupling Rod of Locomotive-Single
Slider Crank Chain- Pendulum Pump-Crank and Slotted Lever Quick Return Motion
Mechanism-Double Slider Crank Chain-Elliptical trammel-Scotch yoke
mechanism-Oldham’s coupling.
Belt Drives-types of flat belt
drives-open, cross, idler pulley, compound, cone pulley and fast
and
loose pulley. Velocity Ratio, Slip and creep of belt, length of belt, Ratio of
driving Tensions, Centrifugal Tension and Initial Tension-Power Transmitted by
belts (Flat and V- Belt) and ropes- Maximum power transmitted by belt (without
proof)-Problems on belt drives-Introduction to Gears - Classification of
Gears-Spur Gear
Terminology-Problems on
gears –(centre
distance only) Introduction to Gear Trains-Types of Gear trains –Simple,
Compound, Reverted and Epicyclic gear trains- Problems on Gear Trains
Friction-Introduction-Types
of Friction, Laws of solid friction, coefficient of friction, limiting angle of
friction, angle of Repose -Friction in Journal Bearing-Power Transmission in
the Journal bearing-Friction in Thrust Bearing-Pivot Bearing– Flat and Conical
bearing-Collar Bearing –Problems on bearings (Assuming uniform pressure
theory)- Friction in Clutches- Single Disc Clutch- Multiple Disc Clutch-
Problems on clutches (Assuming uniform wear theory)-Introduction to
Brakes-Internal Expanding Brake (Mechanical & Hydraulic).
Introduction-Static and Dynamic balancing-Balancing of single rotating
massby a single mass
rotating in the
same plane -Balancing of several masses rotating in the same plane-Problems on
above (Analytical and Graphical methods).
Cams-Introduction-Classification of
followers and cams-Terminology of cam- Displacement
diagram
for the following Motion of follower-Uniform velocity -Simple Harmonic Motion
(SHM)-Uniform Acceleration and Retardation Motion (UARM),Cam profile
construction for Knife edge follower and Roller follower.
Introduction-
Terms used in Vibrations-Types of Vibrations-Free Vibrations- Forced
Vibrations-Damped Vibrations-Types of Free Vibrations- Longitudinal, Transverse
and Torsional- Critical or Whirling speed of a shaft.
®TEXT BOOKS
1. Rattan.S.S,
“Theory of Machines”, Tata McGraw
-Hill Publishers, New Delhi, 2009.
2. Khurmi R S, Guptha J.K “Theory of machines ”, 5 Edition,
S.Chand and company
,Delhi ISBN 81-219-2524-X
REFERENCES
1. Thomas Bevan, “Theory of Machines”, CBS Publishers and
Distributors, 3rd Edition, 2005.
2. Ramamurti,V., “Mechanism and Machine Theory”, 2nd
Edition, Narosa Publishing House,2005.
3.
Ghosh.A and A.K.Mallick, “Theory
of Mechanisms and Machines”, Affiliated
East- WestPrivate Limited, New Delhi, 1998.
4.
Rao.J.S and Dukkipati R.V, “Mechanism
and Machine Theory”, Wiley-Eastern
Limited,New Delhi, 1992.
LIST OF SOFTWARES/ LEARNING WEBSITES:
1.
http://nptel.iitm.ac.in/video.php?subjectId=112104121
2.
http://www.technologystudent.com/gears1/gears7.htm
3. http://kmoddl.library.cornell.edu/model.php?m=20http://www3.ul.ie/~kirwanp/whatisaca mandfollowersyste.htm
4. http://nptel.iitm.ac.in/courses/Webcourse-contents/IIT- Delhi/Kinematics%20of%20Machine/index.htm
5.
http://elearning.vtu.ac.in/12/enotes/Des_Mac-Ele2/Unit6-RK.pdf
6.
www.tecquipment.com/Theory_of_Machines.aspx
7.
www.researchgate.net/.../0094-114X_Mechanism_and_Machine_Theory
8.
www.journals.elsevier.com/mechanism-and-machine-theory/
10.
www.wiziq.com/online-tests/44047-mechanical-theory-of-machine
11.
www.cs.ubc.ca/~murphyk/Teaching/CS340-Fall07/infoTheory.pdf
SUGGESTED LIST OF
STUDENT ACTIVITYS
Note: the following activities or similar activities for assessing CIE
(IA) for 5 marks (Any one)
å
Each student should do any one of the following type
activity or similar activity related to the course and before take up, get it
approved from concerned Teacher and HOD.
å
Each student should conduct different activity and no repeating should occur
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1 |
List the mechanisms which you are using in your day to day life.
Sketch any three from these. Study
and submit handwritten report of 500 words |
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2 |
Take a photo of a actual kinematic mechanism used in an automobile,
study and submit handwritten report of 500 words |
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3 |
Analyse
the effect of
friction in real situation and submit handwritten
report of 500 words |
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2 |
List the mechanism used in a typical car. study and submit
handwritten report of 500 words |
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3 |
Identify and measure the dimensions of Flywheel used in automobile. study and submit handwritten report of 500 words |
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4 |
Identify the type of clutches and cams used in different automobiles
and also the type of brakes in automobile and bicycle. study and submit handwritten report of 500 words |
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5 |
Visit the
market and collect the data of items which are used in any mechanisms. Data
includes specifications, cost, applications, etc. Also name the mechanism/s
in which such item/s is/are use .Study and submit handwritten report of 500 words |
Course Delivery
å
The course will be delivered through lectures and Power point
presentations/ Video
å
Teachers can prepare or download PPT of different
topics on Mechanisms usage in mechanical engineering application.
å
Motivate student to take case study on kinematics,
power transmission and to inculcate him for self and continuous learning.
å MODEL OF RUBRICS /CRITERIA FOR
ASSESSING STUDENT ACTIVITY
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RUBRICS FOR ACTIVITY( 5
Marks) |
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Dimension |
Unsatisfactory |
Developing |
Satisfactory |
Good |
Exemplary |
Student Score |
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1 |
2 |
3 |
4 |
5 |
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Collection of data |
Does not collect any information relating to the topic |
Collects very limited information; some relate to the topic |
Collect
much information; but very limited relate to the topic |
Collects some basic information; most refer to the topic |
Collects a great deal of information; all refer to the topic |
Ex:
4 |
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Fulfil team’s roles & duties |
Does not perform any duties assigned to the team role |
Performs very little duties but unreliable. |
Performs
very little duties |
Performs nearly all duties |
Performs all duties of assigned team roles |
5 |
|
Shares
work equally |
Always
relies on others to do the work |
Rarely does the assigned work; often needs reminding |
Usually does the assigned work; rarely needs reminding |
Normally
does the assigned work |
Always does the assigned work without having to be
reminded. |
3 |
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Listen to
other Team mates |
Is always talking; never allows anyone else to speak |
Usually does most of the talking; rarely allows
others to speak |
Talks good; but never show interest in listening
others |
Listens,
but sometimes talk too much |
Listens
and speaks a fair amount |
2 |
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Average / Total
marks=(4+5+3+2)/4=14/4=3.5=4 |
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Note:
This is only an example. Appropriate rubrics/criteria may be devised by the
concerned faculty (Course Coordinator) for assessing the given activity.
Course Assessment and Evaluation Scheme:
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What |
To who m |
When/Where (Frequency in the course) |
Max Marks |
Evidence collected |
Course outcomes |
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Direct
Assessment |
CIE |
IA |
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Three IA tests (Average of
three tests will be computed) |
20 |
Blue
books |
1,2,3,4,5,6 |
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Student activities |
05 |
Activity sheets |
1,2,3,4,5,6 |
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SEE |
End Exam |
End of the course |
100 |
Answer scripts at BTE |
1,2,3,4,5,6 |
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Indirect Assessment |
Student Feedback on course |
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Middle of the
course |
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Feedback
forms |
1
& 2,3 Delivery of course |
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End of Course
Survey |
End of the course |
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Questionnaires |
1,2,3,4,5,6 Effectiveness of Delivery
of instructions & Assessment Methods |
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Note: I.A. test shall be conducted
for 20 marks. Average marks of three tests shall be rounded off to the
next higher digit.
Note to IA
verifier: The following documents to be verified by CIE verifier at the
end of semester
1. Blue books ( 20 marks)
2. Student suggested activities
report for 5 marks and should be assessed on
RUBRICS
3.
Student feedback on
course regarding Effectiveness of Delivery of instructions & Assessment Methods.
