Log in Sign up

ME-502 Mechanical Vibrations Notes

5 notes for Mechanical Vibrations, unit by unit.

Unit 1 · Short notes Fundamental Aspects of Vibrations Vibration, its main causes, advantages and disadvantages · Engineering applications of vibration and noise · Vector method of representing harmonic motion · Characteristics of vibration, harmonic analysis and beats phenomenon, work done by harmonic forces on harmonic motion · Periodic and non‑harmonic functions – Fourier series analysis and evaluation of Fourier coefficients · Elements of vibratory system; lumped and distributed parameter systems
Unit 2 · Short notes Damped Free Vibrations Viscous damping: damping coefficient and damping ratio · Under‑damped, over‑damped and critically damped systems · Logarithmic decrement · Frequency of damped free vibration · Coulomb (dry‑friction) damping and comparison with viscous damping (frequency, decay rate) · Solid and structural damping
Unit 3 · Short notes Harmonically Excited Vibration One‑degree‑of‑freedom forced harmonic vibration · Vector representation of forces · Excitation due to rotating and reciprocating unbalance · Vibration isolation, force and motion transmissibility · Absolute and relative motion of mass (seismic instruments) · Whirling motion and critical speed – definitions, significance and calculation for a vertical light flexible shaft with single rotor (with and without damping)
Unit 4 · Short notes Systems With Two Degrees of Freedom Un‑damped free vibration of 2‑DOF systems and principal modes of vibration · Torsion vibrations · Forced un‑damped vibrations with harmonic excitation · Coordinate coupling · Dynamic vibration absorber · Torsion vibration absorber
Unit 5 · Short notes Noise Engineering – Subjective Response of Sound Frequency‑dependent human response to sound and the decibel scale · Relationship among sound pressure level (SPL), sound power level and sound intensity level · Addition, subtraction, averaging of sound levels; sound spectra and octave‑band analysis · Loudness, weighting networks, equivalent sound level, auditory effects of noise · Hazardous noise, exposure from machines/equipment, hearing conservation, damage‑risk criteria and daily noise dose · Noise sources, isolation and control – road and industrial sources, construction equipment, industrial noise control strategies at source, along the path and at the receiver

More for ME-502

Mechanical Vibrations subject page

Other 5th semester ME subjects

All ME 5th semester subjects