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Designing internal parts of a muffler to achieve target acoustic characteristics
  • Min, Jae Hong ;
  • Oh, Kee Seong ;
  • Lee, Jong Kyeom ;
  • Park, Sang Young ;
  • Lee, Kyung Hoon ;
  • Lee, Jin Woo
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Publication Year
2019-01-01
Journal
Transactions of the Korean Society of Mechanical Engineers, A
Publisher
Korean Society of Mechanical Engineers
Citation
Transactions of the Korean Society of Mechanical Engineers, A, Vol.43 No.6, pp.443-450
Keyword
Muffler DesignObjective FunctionSize OptimizationTarget FrequencyTransmission Loss
Mesh Keyword
Muffler designObjective functionsSize optimizationTarget frequenciesTransmission loss
All Science Classification Codes (ASJC)
Mechanical Engineering
Abstract
In this paper, a design procedure to modify an acoustic system according to target acoustic characteristics is proposed and is applied to a design problem of a muffler for an automobile. The transmission loss values of a muffler mounted on an exhaust system should be changed considering the results of the sound quality evaluation test. The inlet and outlet of the muffler do not coincide with each other, and it has three holey baffles and three holey tubes. The effects of each part on the transmission loss curve are investigated in the frequency range of interest, and the dominant parts are selected for design. Two size optimization problems are formulated and are sequentially solved using a commercial finite element analysis program. The transmission loss curve of the obtained optimal muffler is compared with a target transmission loss curve, and an acoustical experiment on a manufactured muffler is carried out.
ISSN
2288-5226
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/30828
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85069728907&origin=inward
DOI
https://doi.org/10.3795/ksme-a.2019.43.6.443
Journal URL
http://download.dbpia.co.kr/File/Download/Society?nodeId=NODE08735152&icstId=ICST00000001&dIndex=83658969&uIp=222.127.149.42&lty=003003&isCv=N&lang=kr&isSrv=Y
Type
Article
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