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Elastoacoustic analysis of submerged fluid-filled thin shells

✍ Scribed by R. A. Jeans; I. C. Mathews

Publisher: John Wiley and Sons
Year: 1994
Tongue: English
Weight: 391 KB
Volume: 37
Category: Article
ISSN: 0029-5981
DOI: 10.1002/nme.1620371704

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✦ Synopsis

The analysis of fluid-filled thin shells is discussed in this paper. It is well known that a boundary element formulation of the exterior acoustic problem becomes ill-conditioned at certain critical frequencies. For a coupled boundary-element/finite element formulation of the coupled elastoacoustic problem the formulation suffers from the same numerical illconditioning. However, for fluid-filled thin shell problems the resulting coupled formulation is unique at all frequencies. In this paper the condition numbers of the coupled and uncoupled formulations are calculated and the uniqueness of the coupled formulation is demonstrated for submerged fluid-filled thin shells.

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