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FREQUENCY ANALYSIS OF A PARALLEL FLAT PLATE-TYPE STRUCTURE IN STILL WATER, PART I: A MULTI-SPAN BEAM

✍ Scribed by Y.-R. Yang; J.-Y. Zhang

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 198 KB
Volume: 203
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1996.0914

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✦ Synopsis

This paper is part I of a two part paper. The model used in part I is a multi-span wide beam in water contained by a rigid water trough. The multi-span beam is used to imitate a typical substructure of a parallel flat plate-type structure. There exists a narrow channel between the lower surface of the wide beam and the upper surface of the bottom plate of the water trough. By using the small parameter expansion method, the added mass and damping coefficients for a typical cross-section of a plate-fluid-plate system are deduced. Moreover, by means of the added water mass and damping coefficients, the free vibration frequencies of the simple model of a multi-span wide beam are analyzed in the first part of the paper. In the second part of this paper, the free vibration frequencies of a complex model of a parallel flat plate-type structure will be analyzed.

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