Estimation of the absorption performance of multiple layer perforated panel systems by transfer matrix method
Estimation of the absorption performance of multiple layer perforated panel systems by transfer matrix method
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DOI：
10.1016/j.jsv.2003.10.017
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发表时间：
2004-12-22
影响因子：
4.7
通讯作者：
Kwon, YP
中科院分区：
文献类型：
--
作者：
Lee, DH;Kwon, YP
单层穿孔板吸声系统的吸声性能通常采用等效电-声路分析方法来估计，这种方法是基于电路和声学系统的相似性。对于多层穿孔板系统，传递矩阵法比等效电路法更为方便，因此本文提出了广泛应用于发动机排气消声器一维声学分析的传递矩阵法。吸收系数是从总的传递矩阵中估计出来的，该矩阵是通过乘以穿孔板或空气空间的单位传递矩阵而获得的。通过比较吸收系数的估算值和实测值，验证了传递矩阵法的有效性。此外，还讨论了穿孔板的尺寸和排列方式对吸声性能的影响。(C)2003爱思唯尔有限公司。保留所有权利。
The absorption performance of single layer perforated panel system has been usually estimated by equivalent electro-acoustic circuit analysis based upon the analogy between electric circuit and acoustic system. In the case of multiple layer perforated panel system, however, the transfer matrix method is more convenient than the equivalent circuit analysis.Hence, in this paper the transfer matrix method widely used for the one-dimensional acoustic analysis of engine exhaust muffler is presented. The absorption coefficient is estimated from the overall transfer matrix obtained by multiplying unit transfer matrices for perforated panels or airspaces. The proposed transfer matrix method is confirmed by comparing the estimated absorption coefficient with the measured value. In addition, the effect of dimension and arrangement of the perforated panels on the acoustical performance is discussed. (C) 2003 Elsevier Ltd. All rights reserved.