| 多穿孔管板阻性消声器的声学特性研究 |
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| 引用本文： | 毕嵘,刘正士,陆益民,王勇,陈恩伟.多穿孔管板阻性消声器的声学特性研究[J].振动工程学报,2011,24(5). |
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| 作者姓名： | 毕嵘 刘正士 陆益民 王勇 陈恩伟 |
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| 作者单位： | 合肥工业大学机械与汽车工程学院,安徽合肥,230009 |
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| 基金项目： | 国家高技术研究发展计划(863计划)资助项目，安徽省研究专项基金资助项目 |
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| 摘 要： | 应用包含高阶模态声波的二维解析法研究多穿孔管板阻性消声器的声学性能,消声器传递损失的计算结果和实验结果吻合良好.分析了穿孔率和吸声材料的流阻率对阻性消声器声学性能的影响,并且研究了具有组合式阻抗及组合流阻率吸声材料的多穿孔管板消声器的声学特性.结果表明:不同类型的组合式阻抗及组合流阻率的吸声材料对消声器在不同频段的消声性能产生一定影响.
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| 关 键 词： | 阻性消声器 声学特性 多穿孔管板 组合阻抗 组合吸声材料 |
Acoustic performance of dissipative muffler with multiple perforated screens |
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| BI Rong,LIU Zheng-shi,LU Yi-min,WANG Yong,CHEN En-wei.Acoustic performance of dissipative muffler with multiple perforated screens[J].Journal of Vibration Engineering,2011,24(5). |
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| Authors: | BI Rong LIU Zheng-shi LU Yi-min WANG Yong CHEN En-wei |
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| Affiliation: | BI Rong,LIU Zheng-shi,LU Yi-min,WANG Yong,CHEN En-wei(School of Mechanical and Automotive Engineering,Hefei University of Technology,Hefei 230009,China) |
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| Abstract: | Two-dimensional analytical method based on acoustic mode matching approach including the high order modes is developed to analyze the acoustic performance of dissipative muffler with multiple perforated screens.The effects of the porosity and flow resistivity of absorbent material on acoustic performance of muffler are investigated.The acoustic behaviors of dissipative muffler with mixed impedance and absorbent material are also analyzed.The result shows that different types of dissipative with mixed impeda... |
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| Keywords: | dissipative muffler acoustic performance multiple perforated screens mixed impedance mixed absorbent material |
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