Influence of stiffeners on plate vibration and radiated noise excited by turbulent boundary layers

被引：16
|
作者：
Liu, Bilong [1 ]
Zhang, Hao [1 ]
Qian, Zhongchang [1 ]
Chang, Daoqing [1 ]
Yan, Qun [2 ]
Huang, Wenchao [2 ]
机构：
[1] Chinese Acad Sci, Inst Acoust, Key Lab Noise & Vibrat Res, Beijing 100190, Peoples R China
[2] Aircraft Strength Res Inst, Key Lab Aeroacoust & Dynam, Xian 710065, Peoples R China
来源：
APPLIED ACOUSTICS | 2014年 / 80卷
关键词：
TBL noise; Aircraft noise; Plate vibration; WAVE-NUMBER APPROACH; AIRCRAFT PANELS; VIBROACOUSTIC RESPONSE; PRESSURE-FLUCTUATIONS; SOUND; MODEL; PREDICTION; FLOW; ELEMENT;
D O I：
10.1016/j.apacoust.2014.01.007
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The influence of stiffeners on plate vibration and noise radiation induced by turbulent boundary layers is investigated by wind tunnel measurements. Plates with and without stiffeners are tested under the flow speed of 60 m/s, 71 m/s and 86 m/s, respectively. The stiffeners are set either perpendicular or parallel to the direction of the free stream. Measured vibration and noise levels are compared with theoretical calculations, where wall pressure cross-spectra are described by the Corcos model. For the plates tested, it is evident that stiffeners perpendicular to the direction of the free stream could increase noise radiation, but have almost no influence on vibration level of plates. (c) 2014 Elsevier Ltd. All rights reserved.
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页码：28 / 35
页数：8
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