exp] and numerically calculated eigenfrequencies
Then the eigenfrequencies
and the eigenmodes of the fluid-solid structure are governed by the following variational eigenvalue problem (cf.
On the other hand its influence to the eigenfrequencies
of the sample in our case low.
Muller has shown that a chain of similar harmonic oscillators generates a spectrum of eigenfrequencies
, that can be expressed by a continued fraction equation 
1983; Wlazlo 1987) proved that appearance of cracks has significant impact not only on steel--concrete bond (Khalfallah 2008), deflection and redistribution of the internal forces, but also on the dynamic parameters, such as: eigenfrequencies
If the array of resonators is actuated by this signal so only those two resonators will start to resonate which eigenfrequencies
are equal to the two frequency components in the input signal.
Poisson's ratio is the worst determined elastic characteristic of all because its influence on the eigenfrequencies
of the specimen is sufficiently lower than other elastic characteristics and is difficult to measure by classical tests (Frederiksen 1998).
It is a typical situation that a vibrational device operates in one of its eigenfrequencies
and with the change of eigenforms sequence the numerical analysis becomes meaningless as the solution usually does not converge.
In the most general case, the spectrum of eigenfrequencies
of a chain system of many proton harmonic oscillators is given by the continuous fraction equation 
The final goal of this work is a design of an artificial cochlea which is compound from set of resonant beams with different eigenfrequencies
The model is examined by considering sensitivity of eigenfrequencies
, spectra and applied masses.
Calculation of eigenfrequencies
and forms for a given construction (Fig.