摘要
针对船舶舱室噪声频率高、频带宽的特点,运用统计能量法,对多源激励下上层建筑某舱室的噪声特性进行了分析研究,得到了不同类型的辐射噪声对舱室噪声的贡献量。分析结果表明:当舱室中安装有主要设备时,空气辐射噪声在该舱室噪声中占主要成分;当舱室中没有主要设备时,则结构辐射噪声在该舱室噪声中占主要成分。通过上述分析,可为船舶建造早期的设计工作及建造后期采取相应的减震降噪措施提供依据。
In accordance with high frequency and broad frequency band noise in ship＇s superstructure cabins, this paper studies the acoustic characteristic of the cabin in ship＇s superstructure under multiple excitations, using the method of statistical energy analysis （SEA）. Contribution of different kinds of excitations to the cabin noise is revealed. One of the important results is that, when there is no main equipment installed in the cabin, air-borne noise is the major part of cabin noise, otherwise structure-borne noise is the major one. These analyses may provide guidance to design work in early stage of shipbuilding as well as may be helpful to taking correct vibration-absorption and noise reduction measures in later building stage.
出处
《中国造船》
EI
CSCD
北大核心
2010年第4期159-165,共7页
Shipbuilding of China
关键词
统计能量法
多源激励
结构辐射噪声
空气辐射噪声
statistical energy analysis
multiple excitations
structure-bome noise
airborne noise
