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Development of Transmission Loss Bench for Mufflers Based on the Transfer Matrix Method
Technical Paper
2016-36-0501
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Acoustic components are used in automotive exhaust systems to minimize the noise from the engine and, consequently, to offer more comfort and sound quality to the consumer. Thus, analytical, experimental and numerical studies of these acoustic filters become important in engineering. In this regard, the aim of this article is to report the development of an experimental bench for acoustic transmission loss based on the transfer matrix method for application in studies of automotive mufflers and resonators. The validation of the method was performed by comparing the results obtained experimentally to predictions of numerical simulations and analytical calculations carried out in an acoustic expansion chamber and in a Helmholtz resonator. After the validation, experiments with different automotive mufflers having diverse internal configurations were carried out in order to study the different attenuation frequencies of the components. The studies showed a suitable correlation between the experimental, analytical and numerical methods. The analysis of the acoustic components was concentrated on the characteristic noise frequency of an automotive engine, and the results showed a correlation between the methods, which was coherent for this specific range. Therefore, it was possible to analyze and study the different types of mufflers and to determine important project variables, which influence the level of the attenuation of the components directly.
Authors
Citation
Fernandes dos Santos, Y., da Silva Moura, M., and de Jesus Alves de Lima, J., "Development of Transmission Loss Bench for Mufflers Based on the Transfer Matrix Method," SAE Technical Paper 2016-36-0501, 2016, https://doi.org/10.4271/2016-36-0501.Also In
References
- Abdounur , O. J. Matemática e Música Ed. Escrituras SP 1999
- Antebas , A. G. , Denia , F. D. , Sánchez-Orgaz , E. M. , Fuenmayor , F. J. Numerical Transmission Loss Calculations for Perforated Dissipation Mufflers Containing Heterogeneous Material and Mean Flow Proceedings of the Acoustics 2012
- Barron , R. F. Industrial Noise Control and Acoustics Marcel Dekker, Inc. 2001
- Bilawchuck , S. , Fyfe , K. R. Comparison and Implementation of the Various Numerical Methods Used for Calculating Transmission Loss in Silencer Systems Applied Acoustic 64 903 916 2003
- de Oliveira , A. R. , Moura , M. S. , de Amorim , O. S. , Silva , R. O. Development of Unified Exhaust System Supported by CAE Software SAE International Congress Sao Paulo, Brazil 2010
- Dhaiban , A. A. , Soliman , M-E.S. , El-Sebaie , M. G. Finite Element Simulation of acoustic Attenuation Performance of Elliptical Muffler Chambers Journal of Engineering Science, Assiut University 39 6 1361 1373 2011
- Denia , F. D. , Selamet , A. , Fuenmayor , F. J. , Kirby , R. Acoustic Attenuation Performance of Perforated Dissipative Mufflers with Empty Inlet/outlet Extension Journal of Sound and Vibration 302 1000 1017 2007 10.1016/j.jsv.2007.01.005
- Donoso , J. P. História da Acústica-1 IFSC - USP São Carlos, material de apoio 2010
- Donoso , J. P. História da Acústica-2 Universidade de São Paulo - IFSC 2012 Apostila de resumo do curso de Acústica Física http://www.gradadm.ifsc.usp.br/dados/20122/FFI0210-1/Historia%20da%20Acustica%20_(2_).pdf
- Gerges , S. N. Y. Ruído - Fundamentos e Controle NR Florianópolis, Brasil 675 2000
- Hill , W. , Dowling , D. R. Exhaust System Acoustic and Backpressure Tenneco Inc. Grass Lake, USA 338 2007
- Hunt , F. V. Origins of Acoustics Yale University Press New Haven, CT 26 1978
- Jones , P. , Kessissoglou , N. An Evaluation of Current Commercial Acoustic FEA Software for Modeling Small Complex Muffler Geometries: Prediction vs. Experiment Proceedings of ACOUSTICS Australia 2009
- Jones , P. , Kessissoglou , N. Measurement and Prediction of the Acoustic Performance of Mufflers for Sleep Apnea Devices 16th International Congress on Sound and Vibration Poland 2009
- Lee , D. H. , Kwon , Y. P. Estimation of the absorption performance of multiple layer perforated Panel System by Transfer Matrix Method Journal of Sound and Vibration 278 847 860 2004 10.1016/j.jsv.2003.10.017
- Mang , S. Investigation of Performance Evaluation and Design Techniques for Large Industrial Mufflers Thesis submitted in Master of Mechanical Engineering University of Pittsburgh 2012
- Mehdizadeh , O. Z. , Paraschivoiu , M. A three-dimensional finite element approach for predicting the transmission loss in mufflers and silencers with no mean flow Applied Acoustics 66 8 902 918 2005
- Mersenne , M. L’harmonie universelle 1627 Traite de l’harmonie universelle Fayard Nov. 2003
- Moura , M. S. , Oliveira , A. R. G. , Ichano Junior , N. Melhora de Parâmetros Acústicos Reais Através de Ferramentas de Predição em Sistemas de Exaustão SAE Technical Paper Series 2008
- Munjal , M. L. Acoustic of Ducts and Mufflers John Wiley & Sons Inc. United States 2 399 2014
- Newton , I. Principia 1687 2nd Cajori , F. Newton’s Principia: Motte’s Translation Revised University of California Press Berkeley, CA 1934
- Rayleigh , L. The Theory of the Sound 1871 Beyer , R. T. Sounds of Our Times Springer & AIP 1999
- Sathyanarayana , Y. , Munjal , M. L. A Hybrid Approach for Aeroacoustic Analysis of the Engine Exhaust System Applied Acoustic 60 425 450 2000
- Siano , D. Three-dimensional/one-dimensional Numerical Correlation Study of a Three-pass Perforated Tube Simulation Modeling Practice and Theory 19 1143 1153 2011
- Silva , G. C. C. , Nunes , M. A. A. Análise de Sensibilidade dos Parâmetros de Projeto de Silenciadores Reativos do Tipo Helmholtz Anais do XXIV Encontro da Sociedade Brasileira de Acústica SOBRAC 2012
- Tao , Z. , Seybert , A. F. A Review of Current Techniques for Measurement Muffler Transmission Loss SAE Technical Paper 2003-01-1653
- Wagner , N. , Helfrich , R. Computation of the Transmission Loss of Acoustic Resonators Generation and Propagation of Sound in Solids and Fluids Germany 2012
- Wu , C. J. , Wang , X. J. , Tang , H. B. Transmission Loss Prediction on a Single-Inlet/Double-outlet Cylindrical Expansion-Chamber Muffler by Using the Modal Meshing Approach Applied Acoustics 69 173 179 2008 10.1016/j.apacoust.2006.06.011
- Copyright by ASTM International E2611-09 Standard Test Method for Measurement of Normal Incidence Sound Transmission of Acoustic Materials Based on the Transfer Matrix Method 1 14 2012