111301-LP

RAJALAKSHMI ENGINEERING COLLEGE Thandalam, Chennai – 602 105 LESSON PLAN

Faculty Name Subject Name Year Degree & Branch

: : : :

C.DEVANATHAN MECHANICS OF MACHINES II B.E. – Aeronautical Engineering.

Code Semester

OBJECTIVE To expose the students the different mechanisms, their method of working, Forces involved and consequent vibration during working 1. MECHANISMS

9+3

Machine Structure – Kinematic link, pair and chain – Grueblers criteria – Constrained motion – Degrees of freedom - Slider crank and crank rocker mechanisms – Inversions – Applications – Kinematic analysis of simple mechanisms – Determination of velocity and acceleration. 2. FRICTION

9+3

Friction in screw and nut – Pivot and collar – Thrust bearing – Plate and disc clutches – Belt (flat and V) and rope drives. Ratio of tensions – Effect of centrifugal and initial tension – Condition for maximum power transmission – Open and crossed belt drive. 3. GEARING AND CAMS 9+3 Gear profile and geometry – Nomenclature of spur and helical gears – Gear trains: Simple, compound gear trains and epicylic gear trains - Determination of speed and torque - Cams – Types of cams – Design of profiles – Knife edged, flat faced and roller ended followers with and without offsets for various types of follower motions 4. BALANCING 9+3 Static and dynamic balancing – Single and several masses in different planes – Balancing of reciprocating masses- primary balancing and concepts of secondary balancing – Single and multi cylinder engines (Inline) – Balancing of radial V engine – direct and reverse crank method 5. VIBRATION 9+3 Free, forced and damped vibrations of single degree of freedom systems – Force transmitted to supports – Vibration isolation – Vibration absorption – Torsional vibration of shaft – Single and multi rotor systems – Geared shafts – Critical speed of shaft. TOTAL: 60

: :

111301 III

TEXT BOOKS 1. 2. 3.

R.S.Khurmi, J.K Gupta, “ Theory of machines”, Eurasla publications house(p) Ltd., New Delhi 2002. Rattan.S.S, “Theory of Machines”, Tata McGraw–Hill Publishing Co, New Delhi,2004. Ballaney.P.L, “Theory of Machines”, Khanna Publishers, New Delhi, 2002.

REFERENCES 4. 5. 6. 7. 8.

S. No.

Rao, J.S and Dukkipati, R.V, “Mechanism and Machine Theory”, Second Edition, Wiley Eastern Ltd., 1992. Malhotra, D.R and Gupta, H.C., “The Theory of Machines”, Satya Prakasam, Tech. India Publications, 1989. Gosh, A. and Mallick, A.K., “Theory of Machines and Mechanisms”, Affiliated East West Press, 1989. Shigley, J.E. and Uicker, J.J., “Theory of Machines and Mechanisms”, McGrawHill, 1980. Burton Paul, “Kinematics and Dynamic of Planer Machinery”, Prentice Hall, 1979.

Date

Period/ Hours

1

1

2

2

3

3-4

4 5

5-6 7-8

6

9-10

7

11-12

8

13 - 14

9 10 11 12

15 – 16 17 – 18 19 – 20 21 – 22

13

23

Unit

Topic(s)

UNIT I MECHANISMS Introduction to mechanics, 1 machines their basic elementslink, pair, and Chain Constrained motion , 1 Degrees of freedom – Problems Mechanisms and their types – 1 Slider crank mechanism 1 Crank rocker mechanism 1 Inversions and their applications Kinematics analysis of simple 1 mechanism Determination of Velocity and 1 acceleration UNIT 2 : FRICTION Introduction about friction and its 2 types Friction in the screw and nut 2 Friction in the pivot and collar 2 Friction in the bearing 2 Friction in the clutches 2 Belt and Rope drives Condition for maximum power 2 transmission

Book No

Pages

2

1-6

2

6-15

2

9-10

2

15-29

2

35-58

2

74-105

2

239-249

2 2 2 2

257-264 274-276 264-273 287-289

1

311

S. No.

Date

Period/

14

Hours 24

15

25

16

26

17

27 – 28

18 19 20 21

29 30 31- 32 33 - 34

22

35 -36

23

37

24

38 – 39

25

40 – 41

26

42 – 43

27

44

28

45 – 46

29

47 – 48

30

49

31 32 33

50 51 52

34

53

35 36 37 38

54 – 55 56 - 57 58 – 59 60

Unit

Topic(s)

2 Open and cross belt drive UNIT 3 : GEARING AND CAMS Introduction to gear profile and 3 geometry Nomenclature of spur and 3 helical gear, Gear trains Simple gear train Simple gear train, Compound 3 gear trains 3 Epicyclical gear train 3 Cams and their types 3 Knife edged follower - problems 3 Flat faced follower – Problems Roller ended follower – 3 Problems UNIT 4 : BALANCING 4 Balancing and their types Several masses in different 4 planes Balancing of reciprocating 4 masses Primary and secondary 4 balancing Balancing of single cylinder 4 engine Balancing of multi cylinder 4 engine 4 Balancing of Radial V – engine UNIT 5 : VIBRATION 1 Introduction to vibration and its 5 types 5 Free vibration of single DOF 5 Forced vibration 5 Damped Vibration Vibration isolation , Vibration 5 absorption 5 Torsional vibration of shaft 5 Single and multi rotor systems 5 Geared shafts 5 Critical speed of shaft

Book

Pages

No 2

289-305

2

326-333

2

334-340

2

384-386

2 2 2 2

387-405 195-201 214-237 214-237

2

214-237

2

469-472

2

473-479

2

480-482

2

492-493

2

493

2

494-502

2

503-504

2

591-592

2 2 2

593-602 614-620 603-608

2

621-625

2 2 2 1

638-648 649-656 657-661 898-900

Total Hrs: 60

Signature of the Staff In-Charge

H.O.D/Mechanical