Archives of Acoustics, 22, 4, pp. 463-472, 1997

The mutual impedance of two circular plates for high frequency wave radiation

P. Witkowski
Institute of Physics, Pedagogical University, 35-311 Rzeszów, Rejtana 16a

In this paper the mutual impedance of two thin circular plates with non-axisymmetric, time-harmonic free vibrations is analyzed. It is assumed that plates clamped at the circumference are placed in a rigid, planar baffle and radiate into a lossless and homogeneous fluid medium. Damping in plates is ignored.
Using the Cauchy theorem on residues and asymptotic formulae for the Bessel functions, an approximate expression is derived for a normalized mutual resistance and reactance for high frequencies.
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