3、iationduetorubberslayingonpipelineLIU Fan, ZHOU Qi-dou, LV Xiao-jun(Naval University of Engineering, Wuhan 430033, China)Abstract: A method called structural finite element coupled with fluid boundary element was adopted to calculate theunderwater vibration and acoustic
4、 characters from a cylindrical shell including a pipeline was affected by the pipeline thatsurrounded by rubbers different in thickness. The effect of rubbers on the cylindrical shell underwater vibration and acousticradiation was analyzed from vibration displacement an
5、d radiation noise of the cylindrical shell. This provides references fordesigning acoustic configuration of a underwater structure. The calculation showed that the pipeline surrounded by rubbersdifferent in thickness also decreased the cylindrical shell's underwater rad
6、iation noise and vibration for this calculate ex-ample. And the thicker rubbers are, the more structural vibration and acoustic radiation are reduced.Keywords: cylindrical shell;pipeline;vibration;acoustic field;rubber layer0 引言析,认为阻尼材料厚度越厚、长度越长,阻尼效果越好,并提出了最优厚度。文献[2