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Nils Otto Myklestad (March 24, 1909 – September 23, 1972) was an American mechanical engineer and engineering professor. [1] An authority on mechanical vibration, he was employed by a number of important US engineering firms and served on the faculty of several major engineering universities.
The theory of sonics is a branch of continuum mechanics which describes the transmission of mechanical energy through vibrations.The birth of the theory of sonics [1] is the publication of the book A treatise on transmission of power by vibrations in 1918 by the Romanian scientist Gogu Constantinescu.
Abraham, R.; Marsden, J. E. (2008). Foundations of Mechanics: A Mathematical Exposition of Classical Mechanics with an Introduction to the Qualitative Theory of Dynamical Systems (2nd ed.).
Vibration (from Latin vibrāre 'to shake') is a mechanical phenomenon whereby oscillations occur about an equilibrium point.Vibration may be deterministic if the oscillations can be characterised precisely (e.g. the periodic motion of a pendulum), or random if the oscillations can only be analysed statistically (e.g. the movement of a tire on a gravel road).
Balachandran has been recognized with the J.P. Den Hartog Award [1] [2] and the Lyapunov Award [3] [2] from the American Society of Mechanical Engineers for his lifetime contributions to these fields, and has published 3 books [4] [5] on vibrations and nonlinear dynamics.
Vibration mode of a clamped square plate. The vibration of plates is a special case of the more general problem of mechanical vibrations.The equations governing the motion of plates are simpler than those for general three-dimensional objects because one of the dimensions of a plate is much smaller than the other two.
He has authored two books, Noise and Vibration Control [7] and Acoustics of Ducts and Mufflers With Application to Exhaust and Ventilation System Design, [8] and has edited another, IUTAM Symposium on Designing for Quietness: Proceedings of the IUTAM Symposium held in Bangalore, India, 12–14 December 2000. [9] He has also contributed chapters ...
The example shows how the Rayleigh's quotient is capable of getting an accurate estimation of the lowest natural frequency. The practice of using the static displacement vector as a trial vector is valid as the static displacement vector tends to resemble the lowest vibration mode.