船室の防振内装に関する研究 : 第1報:パネル防振法の基礎的検討と船室モデル実験による騒音低減効果の確認

概要

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Experiments were carried out to obtain useful knowledge how to attach a panel resiliency to vibrating ship structures in order to isolate vibration effectively and to confirm the noise reduction effect by good resilient mount lining system in a cabin model. The results obtained are as follows. Vibration isolation mats, such as Rockwool boards, have much greater vibration isolation performance than isolation rubbers for elastic mount of panels and the reason is explainable. The isolation effects predicted by the presented method, replacing the static mass of panel by effective dynamic one which acts on the mounting rubber, are compared with experimental data. Agreement with experimental results is much better than those of the static mass method. Light weight panels used for inner walls and ceilings, such as plywood thinner than 9mm thick can not be isolated vibration effectively compareed with heavy floor panels, and this causes the poor noise reduction effect (≦10dB(A)) for floating accommodation system. Average radiation ratio of resiliently mounted lining shows several dB higher than that of rigidly attached lining.
独立行政法人海上技術安全研究所の論文
1985-07-30