MECHANICS OF MACHINES | Lectures, Self Study & Quiz | basic mathematics and Applied Science, Engineering Graphics | Diploma



Course Title: MECHANICS OF MACHINES

Scheme (L:T:P) : 4:0:0

Total Contact Hours: 52

Course Code:

15ME32T

Type of Course: Lectures, Self Study & Quiz

 

Credit :04

Core/ Elective:

Core

CIE- 25 Marks                                                                                                    SEE- 100 Marks


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:

 

Course Outcome

CL

Linked PO

Teaching Hrs

 

Analyze and Apply the knowledge of

 

 

 

 

these    machines,            mechanisms            and

 

 

 

 

 

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

 

impact on society

 

 

 

 

CO2

Select appropriate power transmission mechanisms

 

R/U/A

1,2,3,4,5,6

10

11

 

CO3

Analyze the effect of friction on machine elements

 

U/A/An

1,2,3,4,5,6,

10

 

10

 

 

CO4

Appreciate the essentiality of balancing in Rotating Parts..

U/A

1,2,3,4,5,6

10

07

CO5

Construct CAM profile for the

R/U/A

1,2,3,4,5,6

10

 

specific follower motion

 

10

 

CO6

Understand the Terminology and types associated with vibration in machine elements

R/U

1,2, 10

04

 

 

Total sessions

52

Legend: R; Remember, U: Understand A: Application


COURSE-PO ATTAINMENT MATRIX

 

Course

Programme Outcomes

1

2

3

4

5

6

7

8

9

10

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/

 

Unit No

 

Unit Name

Hour

Questions to be set for SEE/Marks

Marks weightage

weightage (%)

R

U

A

 

 

1

BASIC KINEMATICS

10

5

5

20

30

21

 

2

TRANSMISSION OF POWER

11

5

5

20

30

21

3

FRICTION

10

 

5

20

25

17

4

BALANCING

07

--

10

10

20

14

5

CAM MECHANISAMS

10

5

5

20

30

21

 

6

MECHANICAL VIBRATIONS

04

5

5

--

10

06

 

Total

52

20

35

90

145

100

Legend: R; Remember, U: Understand A: Application

Text Box: UNITI: BASIC KINEMATICS	10Hrs

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.

Text Box: UNTII: TRANSMISSION OF POWER	11Hrs

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

Text Box: UNITIII: FRICTION	10Hrs

 

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).

 

 

 

Text Box: UNIT IV:BALANCING	07 Hrs

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).

Text Box: UNIT V: CAM MECHANISAMS	10Hrs

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.

Text Box: UNIT VI: MECHANICAL VIBRATIONS	04Hrs

 

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/

9.     www.iftomm.org/

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

 

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

2

Take a photo of a actual kinematic mechanism used in an automobile, study and

submit handwritten report of 500 words

3

Analyse  the  effect  of  friction in  real situation and submit                                                                                             handwritten report of 500

words

2

List the mechanism used in a typical car. study and submit handwritten report of 500

words

3

Identify and measure the dimensions of Flywheel used in automobile. study and submit

handwritten report of 500 words

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

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     

RUBRICS FOR ACTIVITY( 5 Marks)

 

Dimension

Unsatisfactory

Developing

Satisfactory

Good

Exemplary

Student Score

1

2

3

4

5

 

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

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

 

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

Average / Total marks=(4+5+3+2)/4=14/4=3.5=4

 

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:

 

What

To who

m

When/Where (Frequency in the

course)

Max Marks

Evidence collected

Course outcomes

Direct Assessment

CIE

IA

 

 

Three IA tests (Average of three tests will be

computed)

 

20

 

Blue books

 

1,2,3,4,5,6

Student activities

05

Activity sheets

1,2,3,4,5,6

SEE

End

Exam

End of the course

100

Answer scripts

at BTE

1,2,3,4,5,6

Indirect Assessment

Student Feedback on

course

 

 

 

Middle of the course

 

 

Feedback forms

1 & 2,3 Delivery of course

End of Course Survey

End of the course

 

 

 

Questionnaires

1,2,3,4,5,6

Effectiveness of Delivery of instructions & Assessment

Methods

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.    

Text Box: FORMAT OF I A TEST QUESTION PAPER (CIE)

Student feedback on course regarding Effectiveness of Delivery of instructions & Assessment Methods.


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