eigenfrequency


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eigenfrequency

[′ī·gən‚frē·kwən·sē]
(physics)
One of the frequencies at which an oscillatory system can vibrate.
References in periodicals archive ?
This model will be used for further studies on purpose of identifying eigenfrequency values of different heights of vibrating glass epoxy plate.
As (according to the standard PN-90/B-03200:1990) for a public building with steel deck plates over 12 m in span (if there are no partition walls on the floor), the fundamental eigenfrequency should be at least 5 Hz.
Taking into account the values of parameters for the locomotive Skoda of series 130, the first eigenfrequency obtained from the formulae is 13.
The Static option was selected for static computations, whereas dynamic computations were carried out using Eigenfrequency option.
The spacings always seemed to be related to a W-wave eigenfrequency using a velocity that was an integral multiple of 96 cm/s (or an integral multiple of 48 cm/s).
COMET now has enhanced capabilities for modeling elastic porous (foam), fluid and structural domains and their interactions in complex 2D, Axi-symmetric and 3D objects; -- Boundary Elements Method (BEM) based solutions for transient and eigenfrequency analyses; and -- Infinite elements for exterior solutions based on Finite Element Method (FEM).
5), it is necessary to solve eigenfrequency equation, where all the variables are chosen according to their real physical characteristics:
J 2000 A study on crack detection using eigenfrequency test data, Computers & Structures 77(3): 327-342.
Moreover are known physical effects that lead to a behavior impossible in harmonic oscillators, like the "foldover effect" [4] and "super-harmonic resonance" [5]; both are due to the dependency of the eigenfrequency of nonlinear oscillators on the amplitude and to the non-harmoniticity of the oscillations.
The higher value of stiffness of connection springs lead to vibration also neighbor resonators closed to the resonator with eigenfrequency equal to the frequency components contained in input signal.