考虑抗性消声器结构参数的传递损失预估模型

利用二维解析方法研究两腔抗性消声器的声学性能。通过正交试验设计分析消声器进出口管半径、扩张腔半径、隔板通孔半径以及隔板位置结构参数影响消声器传递损失的主次关系,进而基于均匀设计的试验数据经回归分析获得了两腔抗性消声器传递损失预估模型。结果表明,在1 000-3 000 Hz中频段内,对传递损失影响最大是扩张腔的半径,其次是隔板通孔的半径、隔板位置,最后是进、出口管的半径;该文建立的传递损失预估模型可根据消声器结构参数准确预估抗性消声器的传递损失,能直接反映消声器传递损失与结构参数的关系。该研究为快速优化设计消声器提供了参考。...

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Bibliographic Details
Published in农业工程学报 Vol. 32; no. 19; pp. 95 - 99
Main Author 左曙光 刘敬芳 吴旭东 相龙洋 张珺
Format Journal Article
LanguageChinese
Published 同济大学新能源汽车工程中心,上海,201804 2016
Subjects
传递
均匀设计
声学
损失
正交试验
消声器
预估模型
uniform design
消声器
均匀设计
losses
orthogonal test
transmissions
正交试验
mufflers
acoustics
传递
预估模型
predicting model
声学
损失
Online AccessGet full text
ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.19.013

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Summary:利用二维解析方法研究两腔抗性消声器的声学性能。通过正交试验设计分析消声器进出口管半径、扩张腔半径、隔板通孔半径以及隔板位置结构参数影响消声器传递损失的主次关系,进而基于均匀设计的试验数据经回归分析获得了两腔抗性消声器传递损失预估模型。结果表明,在1 000-3 000 Hz中频段内,对传递损失影响最大是扩张腔的半径,其次是隔板通孔的半径、隔板位置,最后是进、出口管的半径;该文建立的传递损失预估模型可根据消声器结构参数准确预估抗性消声器的传递损失,能直接反映消声器传递损失与结构参数的关系。该研究为快速优化设计消声器提供了参考。
Bibliography:11-2047/S
Zuo Shuguang, Liu Jingfang, Wu Xudong, Xiang Longyang, Zhang Jun （Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China）
Reactive mufflers have been widely used for noise attenuation due to their relatively simple structure, low cost, and broadband sound attenuation. Typical examples are pumps and compressors, engine exhausts, building ventilation systems, and so on. An important index for the acoustic performance of muffler is transmission loss. For the reactive muffler, the transmission loss is closely related to its structure parameters, such as radius of inlet or outlet pipe, radius of expansion chamber, location of baffle, and radius of baffle hole. Therefore, the focal point of this paper is to analyze the relationship between structural parameters and transmission loss of mufflers. Firstly, a two-dimensional theoretical model of a dual-chamber reactive muffler was proposed based on the sound wave equations in the muffler. This two-dimensional analytical method th
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.19.013