多角度隔声结构设计对FPSO的降噪研究  

Noise reduction research of sound insulation structure with multi-angle amid adjacent cabins of FPSO

作　　者：刘子豪[1] 窦培林[1] 朱维龙[1] 邹湘[1] 

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2015年第5期416-420,共5页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：发改委研发与产业化基金资助项目(发改办高技20131144)

摘　　要：基于不同的角度变换,入射声波在传递过程中经壁板间的多次反射,使声波能被舱室间的连接结构与空气层反复阻隔和吸收,达到隔声效果.文中对FPSO相邻的两个舱室的壁板连接方式,由常规连接方式(即相邻两舱室连接的舱壁板夹角为0°),改为夹角为15°,30°,45°的3种连接方式.优选其中隔声量最大的连接方式,在此基础上,再次提出3种新型连接方式(又称为分形结构),再次比较这3种分形结构隔声量的大小,并选出隔声效果最佳的一种分形结构.Based on different angle transform,during the deliver process of incidence sound wave,with repeated reflection among bulkhead plates,sound energy was insulated and absorbed by junction structure and air layer.Three types bulkhead connections with inclued angle 15°,30° and 45° amid two adjacent cabins are used to modify the routine connection type of induded angle 0°. Based on the optimized style,three newtypes of connection,called fractal structure,is proposed to compare the amount of effective transmission loss once again,and the structure with the best effect of sound insulation selected out.

关 键 词：FPSO 舱壁连接 隔声量 连结方式 分形结构 

分 类 号：U674.3[交通运输工程—船舶及航道工程]