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					                                                                                      DOC/LP/01/28.02.02




                                             LESSON PLAN                                           LP-MR MV2255
                                                                                                   LP Rev. No: 00
                                                                                                   Date: 09.12.2009
                     Sub Code & Name :      MV 2255     MECHANICS OF MACHINES I
                                                                                                   Page 01 of 06
                     Unit: 01               Branch: Marine Engineering           Semester : IV


Unit syllabus
MECHANISMS                                                                             12+3

Introduction – science of mechanisms – terms and definitions – planar, spherical and spatial mechanisms,
mobility classification of mechanisms (indexing mechanism, reciprocating mechanisms, etc.,) straight line
generators – kinematic inversion – slider crank chain inversions – four bar chain inversions – Grashoff’s
law– mechanical advantage.

Determination of velocities and acceleration in mechanisms – relative motion method (graphical) for
mechanisms having turning, sliding and rolling pair – Coriolis acceleration – analysis using vector
mathematics for a four bar mechanism - analysis using complex numbers and loop closure equations for
slider crank mechanism, inverted slider crank mechanism – four bar mechanism.

Objective:
At the end of this unit the student would have learnt about the fundamentals of mechanism and machine
and also able to understand the velocity and acceleration diagrams..

Session                      Topics to be covered                         Time       Ref      Teaching
  No                                                                                            Aids
   1        Introduction, Science of mechanism                          50 min     3,4&5      BB
   2        Terms and definitions                                       50 min     3,4&5      BB
   3        Planar, spherical and spatial mechanisms                    50 min     3,4&5      BB
   4        Mobility classification of mechanisms- reciprocating        50 min     3,4&5      BB
            mechanisms
    5       Indexing mechanism                                          50 min     3,4&5 BB,OHP
    6       Straight line generators – kinematics inversion             50 min     3,4&5 BB
    7       Slider crank chain inversions – four bar chain              50 min     3,4&5 BB,OHP
            inversions
    8       Grashoff’s law– mechanical advantage.                       50 min     3,4&5 BB

    9       Determination of velocities and acceleration in             50 min     3,4&5 BB
            mechanisms
   10       Relative motion method (graphical) for mechanisms           50 min     3&5        BB
            having turning pair
   11       sliding and rolling pair, Coriolis acceleration,            50 min     3,4&5 BB
   12       Analysis using vector mathematics for a four bar            50 min     3,4&5 BB
            mechanism
   13       Analysis using complex numbers and loop closure             50 min     3&5        BB
            equations for slider crank mechanism, inverted slider
            crank mechanism – four bar mechanism.
   14       Problems solving                                            50 min     3,4&5 BB
   15       Problems solving                                            50 min     3,4&5 BB
                                                                                     DOC/LP/01/28.02.02




                                             LESSON PLAN                                             LP-MR MV2255
                                                                                                     LP Rev. No: 00
                                                                                                     Date: 09.12.2009
                     Sub Code & Name :      MV 2255 MECHANICS OF MACHINES I
                                                                                                     Page 02 of 06
                     Unit: 02               Branch: Marine Engineering           Semester :IV

Unit syllabus:

SYNTHESIS OF MECHANISMS                                                       8+3


Classification of kinematics synthesis problems – Tchebycheff spacing – two points synthesis – slider
crank mechanism – three position synthesis – four bar mechanism and slider crank mechanism –
Freudenstein method – analytical and graphical design – four bar linkage for body guidance – design of
four bar linkage as a path generator.

Objective:
Design of various mechanisms, four bars and slider crank mechanisms using analytical and graphical
methods.




Session                      Topics to be covered                        Time        Ref    Teaching
  No                                                                                          Aids
  16        Classification of kinematics synthesis problems             50 min      3,4&5   BB
  17        Tchebycheff spacing – two points synthesis                  50 min      3,4&5   BB
  18        Slider crank mechanism                                      50 min      3,4&5   BB,OHP
  19        Three position synthesis                                    50 min      3,4&5   BB
  20        Four bar mechanism & slider crank mechanism                 50 min      3,4&5   BB,OHP
  21        Freudenstein method – analytical and graphical              50 min      3,4&5   BB
            design
   22       Four bar linkage for body guidance                          50 min      3,4&5   BB
   23       Design of four bar linkage as a path generator.             50 min      3,4&5   BB
   24       Problems solving                                            50 min      3,4&5   BB
   25       Problems solving                                            50 min      3,4&5   BB
   26       Problems solving                                            50 min      3,4&5   BB
                                                                                        DOC/LP/01/28.02.02




                                              LESSON PLAN                                            LP-MR MV2255
                                                                                                     LP Rev. No: 00
                                                                                                     Date: 09.12.2009
                     Sub Code & Name :       MV 2255 MECHANICS OF MACHINES I
                                                                                                     Page 03 of 06
                     Unit: 03                Branch: Marine Engineering             Semester : IV



Unit syllabus:

CAMS                                                                            7+3
Types of cams and followers – followers motions – uniform, parabolic, SHM, cycloidal and polynomial –
synthesis of cam profiles for different followers – undercutting in cams – pressure angle – determination of
minimum radius of curvature using design charts – Vamum’s Nomogram – cams of specified contour –
eccentric circle cam.

Objective:

To study the Cam profiles for different cam followers

Session                         Topics to be covered                        Time       Ref     Teaching
  No                                                                                             Aids
  27        Types of cams and followers                                    50 min      4&5     BB,OHP
  28        Followers motions – uniform, parabolic, SHM,                   50 min      4&5     BB
            cycloidal and polynomial
   29       Synthesis of cam profiles for different followers              50 min      4&5     BB
   30       Undercutting in cams – pressure angle                          50 min      4&5     BB
   31       Determination of minimum radius of curvature using             50 min      4&5     BB
            design charts
   32       Vamum’s Nomogram                                               50 min      4&5     BB

   33       Cams of specified contour – eccentric circle cam.              50 min      4&5     BB,OHP
   34       Problems solving                                               50 min      4&5     BB
   35       Problems solving                                               50 min      4&5     BB
   36       Problems solving                                               50 min      4&5     BB
                                                                                        DOC/LP/01/28.02.02




                                              LESSON PLAN                                            LP-MR MV2255
                                                                                                     LP Rev. No: 00
                                                                                                     Date: 09.12..2009
                     Sub Code & Name :       MV 2255 MECHANICS OF MACHINES I
                                                                                                     Page 04 of 06
                     Unit: 04                Branch: Marine Engineering             Semester : IV


Unit syllabus:

THEORY OF GEARING                                                                9+3


Classification of gears, law of gearing, nomenclature – involutes as a gear tooth profile – lay out of an
involute gear, producing gear tooth – interference and undercutting – minimum number of teeth to avoid
interference, contact ratio, internal gears – cycloid tooth profiles – comparison of involutes and cycloidal
tooth forms, non standard spur gears – extended centre distance system – long and short addendum system
– epicyclic gear trains – inversions of epicyclic gear trains, specified ratio and torque calculations,
automobile differential, Wilson four speed automobile gear box.


Objective:

To study and understand the various parameters of gears and gear trains



Session                       Topics to be covered                          Time       Ref   Teaching
  No                                                                                           Aids
  37        Classification of gears, law of gearing, nomenclature          50 min      1,4&5 BB
  38        Involutes as a gear tooth profile – lay out of an              50 min      1,4&5 BB,OHP
            involutes gear
   39       Producing gear tooth – interference and undercutting           50 min      1,4&5 BB
   40       Minimum number of teeth to avoid interference,                 50 min      1,4&5 BB
            contact ratio, internal gears
   41       Cycloid tooth profiles – comparison of involutes and           50 min      1,4&5 BB,OHP
            cycloidal tooth forms
   42       Non standard spur gears – extended centre distance             50 min      1,4&5 BB
            system
   43       Long and short addendum system – epicycle gear                 50 min      1,4&5 BB
            trains
   44       Inversions of epicyclical gear trains                          50 min      1,4&5 BB
   45       Specified ratio and torque calculations, automobile            50 min      1,4&5 BB
            differentia
   46       Wilson four speed automobile gear box.                         50 min      1,4&5 BB
   47       Problems solving                                               50 min      1,4&5 BB
   48       Problems solving                                               50 min      1,4&5 BB
                                                                                       DOC/LP/01/28.02.02




                                            LESSON PLAN                                           LP-MR MV2255
                                                                                                  LP Rev. No: 00
                                                                                                  Date: 09.12.2009
                    Sub Code & Name :       MV 2255 MECHANICS OF MACHINES I
                                                                                                  Page 05 of 06
                    Unit: 05               Branch: Marine Engineering             Semester : IV


Unit syllabus:

CONTROL MECHANISMS                                                            9+3


Governors – gravity controlled and spring controlled – governor characteristics – governor effort and
power, gyroscopes – gyroscopic forces and couple – forces on bearing due to gyroscopic action –
gyroscopic effects on the movement of air planes and ships, stability of two wheel drive and four wheel
drive, gyroscopic effects in grinding machines.


Objective:

       Gyroscopic effect on aero planes, ships, two and four wheelers
       To understand the various control mechanisms.




Session                       Topics to be covered                       Time         Ref    Teaching
  No                                                                                           Aids
  49       Governors – gravity controlled and spring controlled          50 min     2,4&5    BB,OHP
  50       Governor characteristics – governor effort and power          50 min     2,4&5    BB
  51       Gyroscopic forces and couple                                  50 min     2,4&5    BB
  52       Forces on bearing due to gyroscopic action                    50 min     2,4&5    BB
  53       Gyroscopic effects on the movement of air planes              50 min     2,4&5    BB,OHP
  54       Gyroscopic effects on the movement ships                      50 min     2,4&5    BB,OHP
  55       Stability of two wheel drive                                  50 min     2,4&5    BB
  56       Stability of four wheel drive                                 50 min     2,4&5    BB
  57       Gyroscopic effects in grinding machines.                      50 min     2,4&5    BB
  58       Problems solving                                              50 min     2,4&5    BB
  59       Problems solving                                              50 min     2,4&5    BB
   60      Problems solving                                              50 min 2,4&5 BB
                                                                                               DOC/LP/01/28.02.02




                                                  LESSON PLAN                                                LP-MR MV2255
                                                                                                             LP Rev. No: 00
                                                                                                             Date: 09.12.2009
                      Sub Code & Name :        MV 2255 MECHANICS OF MACHINES I
                                                                                                             Page 06 of 06
                      Branch: Marine Engineering                 Semester : IV




Course Delivery Plan:


        1      2      3      4      5      6       7      8        9      10     11     12     13     14      15     16
Week
        I II   I II   I II   I II   I II   I II    I II   I II     I II   I II   I II   I II   I II   I II    I II   I II

Units




Text Books and References:

   1. Shingley, J.E. & John Joseph Uivker, Jr., “Theory of Machines and Mechanisms”,
      2nd edition, McGraw – Hill International Editions, London, 1981.
   2. Ghosh A. and Malik, A.M. “Theory of Mechanisms and machines”, 2nd edition,
      Affiliated East – West Press Pvt. Ltd., New Delhi, 1988.
   3. Rao, J.S., and Dukkipatti, R.V., “Mechanism and machinery theory”, 2nd Edition,
      New age international, Mumbai, 1992.
   4. S.S.Rattan.,”Theory of Machines”, 2nd edition, Tata Mcgraw Hill, 2005, New
      Delhi
   5. R.S.Khurmi & J.K.Kupta,Thery of Machines,S.Chand & Company,New Delhi




                                        Prepared by                                             Approved by
 Signature

 Name                                L.Poovazhagan                                       Prof.K.V.Sivanarayana
 Designation                            Lecturer                                         Professor & Head MR
 Date                                  09.12.2009                                              09.12.2009

				
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