TRIBOLOGY AND MACHINE DYNAMICS

Syllabus:

INTRODUCTION (02 Hours)

Introduction to tribology and surface topography.

FRICTION & WEAR (04 Hours)

Theories of friction and wear and measurement techniques.

LUBRICANTS (04 Hours)

Properties and testing of lubricants.

REGIMES OF LUBRICATION (10 Hours)

Application of lubrication mechanism in bearing design. Basic concepts of hydrodynamic lubrication theory. Hydrostatic and boundary lubrication.

FUNDAMENTALS OF VIBRATIONS (01 Hours)

Introduction, definition, SHM, beats phenomenon, complex method of representing harmonic vibrations.

UNDAMPED FREE VIBRATIONS OF SINGLE DEGREE OF FREEDOM SYSTEM (06 Hours)

Introduction, deviation of differential equations and resolution, equivalent stiffness of spring combinations, Newton’s method and energy method for problem solutions.

DAMPED FREE VIBRATIONS OF SINGLE DEGREE OF FREEDOM SYSTEM (06 Hours)

Different types of dampings, free vibratio ns with viscous dampers.

FORCED VIBRATION OF SINGLE DEGREE OF FREEDOM SYSTEMS (06 Hours)

Forced vibration with constant harmonic excitation, with rotating and reciprocating unbalance, due to the support, vibration isolation and transmissibili ty, measuring instruments, displacement, velocity, acceleration, frequency measuring instruments.

WHIRLING AND CRITICAL SPEED OF SHAFTS (02 Hours)

Introduction to multi degree of freedom system.

CAM DYNAMICS (04 Hours)

Forces in rigid systems, follower response by phase -plane method, jump and cross-over, Johnson’s numerical method.

(Total Lecture Hours: 45 +Tutorial Hrs: 15)

PRACTICALS

1. Tuned rectilinear vibration absorber

2. Free damped vibration

3. Fixed free three rotor system

4. Semi definite system

5. Variable port opening dash pot

6. Rectilinear vibration of cantilever beam

7. Tuned torsional vibration absorber

8. Viscosity measurement

9. Wear measurement

BOOKS RECOMMENDED

1. Arnell R. D., Davies P.B., Halling J. and Whomes T.L., “Tribology – Principles and Design Application”, Springer – Verlag, 1991.

2. Majmudar B. C., “Introduction to Tribology of Bearings ”, A.H. Wheeler and Co., 1986.

3. Cameron A., “Basic Lubrication Theory”, Wiley Eastern, 1987.

4. Grover G. K., “Mechanical Vibrations”, Nemchand & Bros. 1995.

5. Kelly Graham S., “Mechanical Vibrations”, McGraw Hill, 1995.

6. Shigley J.E., “Theory of Machines and Mechanism ”, Tata McGraw Hill, 1992.

Useful Links:

• Syllabus_PDF: TRIBOLOGY AND MACHINE DYNAMICS Syllabus
• Tribology
• damped vibrations
• Single DOF undamped free vibrations (Mechanical Vibrations)
• BMS friction
• TMD lubrication
• TMD BMS
• tmd tut
• Tribology
• TMD NGP
• TMD_Notes_1_Rutvik_Patel
• TMD_Notes_2_Rutvik_Patel
• friction and wear notes_Rutvik_Patel