Application of a Discrete Transfer Matrix Method in Analysis of Acoustic Attenuation Performance of Complex Perforated Pipe Mufflers

Abstract:

The article is about an application of a discrete method for analyzing acoustic attenuation performance of perforated tube mufflers. Acoustic transfer matrix of a tiny perforated tube section which contains one single hole is deduced based on basic hydromechanics equations. Then the work is developed into a general formula for resolving sound transmission loss of one perforated silencer unit consisting of multiple parallel perforated pipes. Result of the calculation formula is compared with that of acoustic finite element method. One more example is presented on influential factors analysis for noise elimination performance of a practical complex perforation muffler.

• Periodical: Applied Mechanics and Materials (Volume 419)
• Pages: 140-144
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.419.140
• Online since: October 2013
• Authors: Huo Rui, Meng Bei, Zhang Lei
• Keywords: Numerical Simulation, Perforated Pipe Muffler, Transfer Matrix

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