Syllabus Dynamics of Machinery - (BE05000301) Total Credits Assessment Pattern and Marks Total Marks Theory Tutorial / Practical ESE(E) PA / CA (M) PA / CA (I) PBL (I) ESE (V) 03 70 30 20 30 50 200 Sr. No. Content 1. Dynamic force analysis of mechanisms : Introduction, D’Alembert’s principle, equivalent offset inertia force, dynamic analysis of four bar mechanism, dynamic analysis of slider crank mechanism, velocity and acceleration of piston, angular velocity and angular acceleration of connecting rod, engine force analysis, dynamically equivalent system, inertia forces in reciprocating engines. (Chapter - 1) 2. Turning moment diagrams and flywheel : Turning moment diagrams for IC engines, fluctuation of energy and speed, coefficient of fluctuation, energy storage in flywheel, dimensions of flywheel rim, flywheel applications in punching presses. (Chapter - 2) 3. Balancing of rotating and reciprocating systems : Static and dynamic balancing, balancing of several masses rotating in same and different planes, balancing of reciprocating masses, balancing of locomotives, effects of partial balancing in locomotives, secondary balancing, balancing of inline engines, balancing of ‘V’-engines, balancing of radial engines, balancing machines. (Chapters - 3, 4) 4. Gyroscope : Angular velocity, angular acceleration, gyroscopic couple and torque, gyroscopic effects on ships, aircraft, stability of automobiles, stability of two-wheel vehicle. (Chapter - 5) 5. Free vibrations and damped free vibrations : Types and elements of vibration systems, different methods of deriving equations of motion, free undamped vibrations, spring mass systems, equivalent stiffness, viscous damping, damping factor, under damped system, critically damped system, over damped system, logarithmic decrement, torsional vibrations - free torsional vibration of a two and three rotor system, torsionally equivalent shaft and geared system vibrations. (Chapters - 6, 7, 8) 6. Forced damped vibrations : Analytical solution of forced damped vibration, vector representation of forced vibrations, Magnification factor, Frequency Response Functions (FRFs), force and motion transmissibility, forced vibration with rotating and reciprocating unbalance, forced vibration due to excitation of support. (Chapter - 9) 7. Critical speeds of shafts : Critical speed of shaft carrying single rotor and having no damping, Critical speed of shaft carrying single rotor and having damping, secondary critical speeds in horizontal shafts, critical speed of shaft having multiple rotors. (Chapter - 10) 8. Vibration Monitoring and Analysis : Condition monitoring, vibration measurement instruments and sensors, data acquisition systems, signal conditioning, time domain analysis, frequency domain analysis using FFT, spectrum and orbit analysis, time-frequency domain analysis using STFT and Wavelet Transform, vibration signatures for machinery fault diagnosis. (Chapter - 11)
