Abstract
Previously, we presented [L. H. Green, R. H. Hackman, D. H. Trivett, and L. Flax, J. Acoust. Soc. Am. Suppl. 1 76, S65 (1984)] an analysis of the low‐frequency resonances of thin spherical shells. The analysis demonstrated that the proper background to subtract (in order to identify the elastic and fluid responses) is that of a rigid sphere. Some questions were raised about the validity of this approach to very thin shells. In this paper the analysis is performed on an aluminum spherical shell with an inner to outer radius ratio of 0.99 and is extended to include thin cylindrical shells. In both cases, the effects of fluid loading on the in‐vacuum modes are discussed.
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