噪声与振动控制2019，Vol.39Issue(5)：124-127,4.DOI:10.3969/j.issn.1006-1355.2019.05.023
民用客机后储藏室壁板结构隔声计算研究
Acoustic Transmission Loss Calculation of Rear Storeroom Panels of Civil Aircrafts
徐俊伟 1韩峰 1冯梓鑫 1李晨曦 1赵华勇 1何立燕1
作者信息
- 1. 上海飞机设计研究院 功能结构部绝热隔声室,上海 201210
- 折叠
摘要
Abstract
The cabin noise of civil aircrafts has a remarkable effect on passengers'comfort. In the rear area of the pas-senger cabin, the noise peaks of 94 Hz and 274 Hz are found to appear in an aircraft test. In order to determine the sources of the noise peaks, the character of the airframe is analyzed and the vibration test is carried out for the structures which may produce the noise. It is found that the vibration caused by low pressure rotor and high pressure rotor of the engine is transmit-ted to the reinforced frame structure, and the vibration of the reinforced frame structure produces the two noise peaks. As an important noise transfer path, the acoustic transmission loss ability of the rear storeroom panel is calculated by the acoustic finite element modeling. The calculated acoustic transmission loss of the rear storeroom panel shows that the low acoustic transmission loss of this panel is the main reason of the two noise peaks in the cabin.关键词
声学/民用客机/有限元分析/壁板/隔声量Key words
acoustics/civil aircraft/finite element analysis/panel/transmission loss分类
通用工业技术引用本文复制引用
徐俊伟,韩峰,冯梓鑫,李晨曦,赵华勇,何立燕..民用客机后储藏室壁板结构隔声计算研究[J].噪声与振动控制,2019,39(5):124-127,4.
