分析舱室噪声的主要贡献源有助于采用合理的降噪措施。采用统计能量分析方法对某型物探调查船全船舱室噪声进行数值计算。通过分析能量传递路径，发现该船多数舱室的噪声主要贡献源为主柴油发电机组振动引起的结构噪声。依据此特点，讨论兼顾主柴油发电机组减振和舱室噪声控制的负泊松比蜂窝浮筏隔振隔声方案。研究表明，采用负泊松比蜂窝浮筏隔振措施能够显著减小主柴油发电机组振动导致的船体甲板的振动强度，进而减小船舶舱室噪声。
Analysis of the main contribution of cabin noise could help ship designers to adopt reasonable noise control treatments. By using statistical energy analysis, the numerical vibro-acoustic characteristics of a geophysical survey ship are presented. The main noise source of this ship is the structureborne noise caused by diesel-powered generator sets. Based on this feature, application of a floating raft with negative Poisson’s ratio effect is proposed, reduction of cabin noise through this measure is investigated and discussed. The results show that the use of proposed floating rafts can significantly reduce the diesel engines' vibration level transmitted to hull structure, thereby reduce the cabin noise level.
2021,43(4): 88-93 收稿日期：2020-03-15
DOI：10.3404/j.issn.1672-7649.2021.04.018
分类号：U661
作者简介：高处(1984-),男,硕士,工程师,研究方向为船舶结构设计与振动分析
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