@article {Su:2018:0736-2501:45,
title = "Modal coupling in the vibro-acoustic responses of submerged spherical-cylindrical-spherical shells stiffened by ribs and plates",
journal = "Noise Control Engineering Journal",
parent_itemid = "infobike://ince/ncej",
publishercode ="ince",
year = "2018",
volume = "66",
number = "1",
publication date ="2018-01-01T00:00:00",
pages = "45-55",
itemtype = "ARTICLE",
issn = "0736-2501",
url = "https://ince.publisher.ingentaconnect.com/content/ince/ncej/2018/00000066/00000001/art00005",
doi = "doi:10.3397/1/37665",
keyword = "42, 75.6",
author = "Su, Jinpeng and Qu, Yegao and Hua, Hongxing",
abstract = "This article presents a modal decomposition method for the analysis of radiated sound power of coupled shell structures submerged in infinite heavy fluid. This method provides greater physical insight into the self- and mutual-modal radiations of the in-vacuo modes. The corresponding
cross-modal radiation efficiency is defined and formulated to analyze the mechanism of the energy transfer among the structural modes. A fully coupled finite element/boundary element model is developed for a simplified submarine hull, which is composed of a coupled sphericalcylindrical-spherical
shell and a series of ring stiffeners and bulkheads. The interactions of different circumferential modes of the hull are examined. Modal coupling among the n = 1 grouped modes (including rigid body modes) is carried out to reveal the cross-modal coupling characteristics of the modes in the
axial direction. In addition to the cross-modal radiation efficiencies, modal sound directivity is employed to show the physical mechanism of the modal coupling. The effects of apparent relative mass on the modal coupling are also investigated.",
}