Analysis of structure-borne noise in ship cabins using a floating floor with an inserted viscoelastic layer |
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Authors: | Jee-Hun Song Suk-Yoon Hong Won-Ho Joo |
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Institution: | (1) Department of Naval Architecture and Ocean Engineering, College of Engineering, Seoul National University, San 56-1, Shinlim-dong, Kwanak-gu, Seoul, 151-742, South Korea;(2) Hyundai Heavy Industries Co., Ltd, Hyundai Maritime Research Institute, Ulsan, South Korea |
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Abstract: | A numerical model was developed for a floating floor with an inserted viscoelastic layer to predict the structure-borne noise
(SBN) in ship cabins. In cabins, high-density mineral wool is usually used as an impact-absorbing material. The theoretical
model consisted of multipanel structures lined with high-density mineral wool. The predicted results for SBN when a floating
floor with an inserted viscoelastic layer is used were compared with the measurements done on a cabin mock-up. Various floating
floors with inserted viscoelastic layer structures were studied, and the effects of variations in the thickness, density,
and fiber direction of the high-density mineral wool were investigated. Comparisons of the predicted results and the experimental
results showed that the developed model could be an effective tool for predicting SBN in ship cabins. |
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Keywords: | Floating floor Viscoelastic layer Structure-borne noise |
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