考虑微穿孔管消声器结构参数的共振频率预估模型

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摘要针对微穿孔管消声器共振频率与其穿孔段长度、穿孔率、穿孔直径及空气腔厚度等参数关系密切，引入微穿孔板声阻抗理论模型，通过微穿孔管消声器传声损失测试验证基于该模型的传声损失数值计算方法的正确性。利用数值方法计算微穿孔管消声器传声损失获得共振频率。单因素法分析各结构参数变化对共振频率影响发现，穿孔段长度及空气腔厚度对共振频率影响显著。利用均匀设计结合回归分析法所得共振频率预估模型，能直接反映微穿孔管消声器共振频率与结构参数之关系，对微穿孔管消声器优化设计具有指导意义。

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	左曙光
	龙国
	吴旭东
	相龙洋
	张孟浩
	胡佳杰

关键词 ：微穿孔管消声器, 声阻抗模型, 共振频率, 单因素分析, 预估模型

Abstract：The resonant frequency of micro-perforated tube muffler is closely related to its parameters, such as perforation segment length, perforation, perforation diameter and air-cavity thickness etc. A theoretical acoustic impedance model of MPP is introduced firstly and a measurement for transmission loss (TL) of a micro-perforated tube muffler is conducted, which validates the correctness of TL numerical calculation method based on the model mentioned above. Then resonant frequency is obtained from TL results calculated by numerical calculation method mentioned above. A simple analysis by single factor analysis method about the variation of resonant frequency with the parameters of micro-perforated tube muffler is conducted and the perforation segment length and the air-cavity thickness prove to be significant to resonant frequency. Moreover, a resonant frequency predicting model is derived by uniform design method and regression analysis, which connects resonant frequency with parameters and thus instructs the optimization and design of micro-perforated tube muffler.

Key words： micro-perforated tube muffler acoustic impedance model resonant frequency single factor analysis predicting model

收稿日期: 2014-02-26 出版日期: 2015-05-25

引用本文:

左曙光，龙国，吴旭东，相龙洋，张孟浩，胡佳杰. 考虑微穿孔管消声器结构参数的共振频率预估模型[J]. 振动与冲击, 2015, 34(10): 173-178.
ZUO Shu-guang，LONG Guo，WU Xu-dong，XIANG Long-yang，ZHANG Meng-hao，HU Jia-jie. Resonant frequency predicting model of micro-perforated tube muffler considering its structural parameters. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(10): 173-178.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I10/173

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