摘要
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.
作者
高处
唐军
杨德庆
杨梦婕
李方杰
GAO Chu;TANG Jun;YANG De-qing;YANG Meng-jie;LI Fang-jie(Marine Design and Research Institute of China,Shanghai 200011,China;Guangzhou Marine Geological Survey,Guangzhou 510075,China;State Key Laboratory of Ocean Engineering School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China)
出处
《舰船科学技术》
北大核心
2021年第4期88-93,共6页
Ship Science and Technology
关键词
物探船
舱室噪声
结构噪声
负泊松比效应
浮筏
survey vessel
cabin noise
structureborne noise
negative Poisson’s ratio effect
floating raft
