某舰船睡眠舱室通风口降噪设计  

Noise Control Design for Vents in a Ship Accommodation Cabin

作　　者：刘李娜 梁乐 缪振菁 黄煜 LIU Lina;LIANG Le;MIAO Zhenjing;HUANG Yu(Naval Medical Centre of PLA,Shanghai 200433,China;Institute of Vibration,Shock and Noise,School of Mechanical and Power Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]中国人民解放军海军特色医学中心,上海200433 [2]上海交通大学机械与动力工程学院振动、冲击、噪声研究所,上海200240

出　　处：《噪声与振动控制》2025年第2期293-297,共5页Noise and Vibration Control

摘　　要：船舶起居舱室的噪声直接影响舰员的生活与工作效率。针对某船起居舱室内睡眠舱通风口的降噪设计,首先测量并分析5:00-24:00时段内床铺头部位置噪声的时频特性,确定典型噪声中较为恶劣的能量频带。舱室内噪声的等效连续A声级范围75~110 dB(A),频带集中分布在400~1 000 Hz,以500 Hz为中心频率的1/3倍频程噪声能量占主导。对此,设计一种带延长管的轻薄吸声结构,其厚度小于30 mm且吸声系数在500 Hz附近达到最大值0.87,传声损失为17.7 dB。Noise in the vessel cabin directly affects the sailor's life and work efficiency.In this work,the noise at the sleeping position inside the accommodation cabin was measured in the time period of 5:00-24:00,and the worse energy bands of typical noise signals were determined.The measurement results show that the equivalent continuous A-weighted sound pressure level ranges from 75 dB(A)to 110 dB(A),and the frequency band was concentrated in the range of 400-1000 Hz,and the 1/3 octave noise energy with 500 Hz as the centre frequency was the dominant.According to these results,a light and thin acoustic absorption structure with an extended-tube liner was designed with the thickness less than 30mm,the maximum acoustic absorption coefficient of 0.87,and a sound transmission loss of 17.7 dB at the centre frequency of 500 Hz.

关 键 词：声学 舰船噪声 舱内噪声 延长管吸声结构 

分 类 号：U467.493[机械工程—车辆工程] U467.493[交通运输工程—载运工具运用工程] X287[交通运输工程—道路与铁道工程]