In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 75, No. S1 ( 1984-05-01), p. S77-S77
Abstract:
The low-frequency form function for plane-wave scattering by a fluid-loaded thin spherical shell is characterized by the high Q monopole or “bubble” resonance. As the shell thickness is increased, the monopole resonance is observed to shift to higher frequency and broaden (i.e., the Q of the resonance decreases). With a further increase in thickness, high Q resonances appear on top of the spectrum of the monopole resonance. These low-frequency, high Q resonances, first reported by Diercks and Hickling [J. Acoust. Soc. Am. 41, 380–393 (1967)] have never been satisfactorily explained. In this paper we present the results of our investigation, based upon the linear theory of elasticity, of these high Q resonances. The dependence of the resonances on frequency, and shell and fluid parameters are presented along with the elastic stresses and displacements in the shell. Dispersion curves are generated from numerical solutions and a physical explanation for the strong coupling to the fluid medium is obtained.
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
1984
detail.hit.zdb_id:
1461063-2
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