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ME2302 DYNAMICS OF MACHINERY OBJECTIVE: To understand the method of static force analysis and dynamic force analysis of mechanisms To study the undesirable effects of unbalances in rotors and engines. To understand the concept of vibratory systems and their analysis To understand the principles of governors and gyroscopes.

UNIT I FORCE ANALYSIS AND FLYWHEELSStatic force analysis of mechanisms D Alemberts principle - Inertia force and Inertia torque Dynamic force analysis - Dynamic Analysis in Reciprocating Engines Gas Forces - Equivalent masses - Bearing loads - Crank shaft TorqueEngine shaking Forces Turning moment diagrams - Flywheels of engines and punch press

UNIT II BALANCINGStatic and dynamic balancing - Balancing of rotating masses - Balancing a single cylinder Engine Primary and secondary unbalanced forces - Balancing Multi-cylinder Engines Firing order Pivoted cradle balancing machines

UNIT III FREE VIBRATIONBasic features of vibratory systems - Basic elements and lumping of parameters - Degrees of freedom - Single degree of freedom - Free vibration - Equations of motion - natural frequency - Types of Damping - Damped free vibration Whirling of shafts and critical speed - Torsional systems; Natural frequency of two and three rotor systems.

UNIT IV FORCED VIBRATIONResponse to periodic forcing - Harmonic Forcing Forced vibration caused by unbalance - Support motion Force transmissibility and amplitude transmissibility - Vibration isolation

UNIT V MECHANISMS FOR CONTROLGovernors - Types - Centrifugal governors - Gravity controlled and spring controlled centrifugal governors Characteristics - Effect of friction - Controlling Force Quality of governors effect of friction.Gyroscopes - Gyroscopic couple - Gyroscopic stabilization - Gyroscopic effects in Automobiles and ships

TEXT BOOKS:1. Ambekar A. G., Mechanism and Machine Theory, Prentice Hall of India, New Delhi, 2007.

REFERENCES1. Thomas Bevan, "Theory of Machines", CBS Publishers and Distributors, 1984.2. Ghosh A. and Mallick A.K., "Theory of Mechanisms and Machines", Affiliated East- West Press Pvt. Ltd., New Delhi, 1988.3. Shigley J.E. and Uicker J.J., "Theory of Machines and Mechanisms", McGraw-Hill, Inc., 1995.4. Rao J.S. and Dukkipati R.V., "Mechanism and Machine Theory ", Wiley-Eastern5. Limited, New Delhi, 1992.6. John Hannah and Stephens R.C., "Mechanics of Machines", Viva low-Priced Student Edition, 1999.7. Sadhu Singh Theory of Machines Pearson Education, 2002.

PSNA COLLEGE OF ENGINEERING AND TECHNOLOGY, DINDIGUL 624 622DEPARTMENT OF MECHANICAL ENGINEERING LESSON PLANSubject Name Dynamics of Machinery Branch Mechanical

Subject code ME2302Year / Semester III / V

Name of the faculty S.BaluFaculty Code ME - 78

Objective:

To understand the method of static force analysis and dynamic force analysis of mechanisms To study the undesirable effects of unbalances in rotors and engines. To understand the concept of vibratory systems and their analysis To understand the principles of governors and gyroscopes.

Programme Educational Objectives:

1) Our mechanical engineering graduates will be successful professionals with a commitment to quality, performance, society, environment, country, safety and ethics when discharging duties as engineers, managers, researchers and administrators.2) Graduates will have a successful career in mechanical engineering or related fields in industry, academia and other organizations throughout the world where an engineering approach to problem solving and ability to independent learning is highly valued.

Course Outcome:

The student will be able to gain greater knowledge and skill in static and dynamic force analysis and their mechanisms for various engineering applications.

Programme Outcomes:

Graduates will demonstrate the ability to design a system or process to meet desired needs within applied constraints such as economic, environmental, social, ethical, safety, manufacturability, and sustainability. Graduates will demonstrate the ability to use the techniques, skills, and engineering tools necessary for practicing in Mechanical Engineering field. Graduates will demonstrate the ability to identify, formulate, and solve mechanical engineering problems. Graduates will demonstrate self education along with lifelong learning for continual improvement.

Unit IFORCE ANALYSIS AND FLYWHEELSTarget Hours12

SL. NoDatePeriod RequiredTopic to be CoveredRef. BookActual Date of Completion

11IntroductionT1/R7

21Static force analysis of mechanismsT1/R7

31DAlemberts principleT1/R7

41Inertia force and Inertia torqueT1/R7

51Dynamic force analysisT1/R7

62Dynamic Analysis in Reciprocating EnginesT1/R7

72Gas Forces - Equivalent masses - Bearing loads - Crank shaft TorqueT1/R7

81Engine shaking Forces - Turning moment diagramsT1/R7

91Fly wheels of engines T1/R7

101Fly wheels of punch pressT1/R7

Unit IIBALANCINGTarget Hours12

SL. NoDatePeriod RequiredTopic to be CoveredRef. BookActual Date of Completion

11Introduction to Static and dynamic balancingT1/R4

22Balancing of rotating massesT1/R4

32Balancing a single cylinder EngineT1/R4

42Balancing Multi-cylinder EnginesT1/R4

52Partial balancing in locomotive EnginesT1/R4

61Firing order- Pivoted cradle balancing machines

T1/R4

Unit IIIFREE VIBRATIONTarget Hours12

SL. NoDatePeriod RequiredTopic to be CoveredRef. BookActual Date of Completion

12Basic features of vibratory systems - Basic elements and lumping of parameters - Degrees of freedom - Single degree of freedomT1/R7

21Free vibration - Equations of motion - natural frequencyT1/R7

32Types of Damping - Damped free vibrationT1/R7

41Whirling of shafts and critical speedT1/R7

52Torsional systemsT1/R7

61Natural frequency of two rotor systemT1/R7

71Natural frequency of three rotor systemT1/R7

Unit IVFORCED VIBRATIONTarget Hours10

SL. NoDatePeriod RequiredTopic to be CoveredRef. BookActual Date of Completion

12Response to periodic forcing - Harmonic Forcing T1/R7

22Forcing caused by unbalance - Support motionT1/R7

32Force transmissibility T1/R7

42Amplitude transmissibilityT1/R7

52Vibration isolationT1/R7

Unit VMECHANISM FOR CONTROLTarget Hours10

SL. NoDatePeriod RequiredTopic to be CoveredRef. BookActual Date of Completion

12Governors - Types - Centrifugal governors - Gravity controlled and spring controlled centrifugal governorsR7

23Characteristics - Effect of friction - Controlling Force other Governor mechanisms. Watt governorR3

32Gyroscopes - Gyroscopic forces and Torques - Gyroscopic stabilization - R4

41Gyroscopic effects in AutomobilesR4

51Gyroscopic effects in ships R4

61Gyroscopic effects in airplanesR4

TEXT BOOKS:1. Ambekar A. G., Mechanism and Machine Theory, Prentice Hall of India, New Delhi, 2007.REFERENCES1. Thomas Bevan, "Theory of Machines", CBS Publishers and Distributors, 1984.2. Ghosh A. and Mallick A.K., "Theory of Mechanisms and Machines", Affiliated East- West Press Pvt. Ltd., New Delhi, 1988.3. Shigley J.E. and Uicker J.J., "Theory of Machines and Mechanisms", McGraw-Hill, Inc., 1995.4. Rao J.S. and Dukkipati R.V., "Mechanism and Machine Theory ", Wiley-Eastern5. Limited, New Delhi, 1992.6. John Hannah and Stephens R.C., "Mechanics of Machines", Viva low-Priced Student Edition, 1999.7. Sadhu Singh Theory of Machines Pearson Education, 2002.

FACULTY IN-CHARGEHOD/MECH