Näytä suppeat kuvailutiedot

dc.contributor.authorAiraksinen, Tuomas
dc.contributor.authorHeikkola, Erkki
dc.date.accessioned2011-09-06T07:35:03Z
dc.date.available2012-01-01T22:45:03Z
dc.date.issued2011
dc.identifier.citationAiraksinen, T. & Heikkola, E. (2011). Multiobjective muffler shape optimization with hybrid acoustics modelling. Journal Of Acoustical Society of America, 130 (3), 1359-1369. doi:10.1121/1.3621119 Retrieved from http://dx.doi.org/10.1121/1.3621119
dc.identifier.otherTUTKAID_46822
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/36645
dc.description.abstractThis paper considers the combined use of a hybrid numerical method for the modeling of acoustic mufflers and a genetic algorithm for multiobjective optimization. The hybrid numerical method provides accurate modeling of sound propagation in uniform waveguides with non-uniform obstructions. It is based on coupling a wave based modal solution in the uniform sections of the waveguide to a finite element solution in the non-uniform component. Finite element method provides flexible modeling of complicated geometries, varying material parameters, and boundary conditions, while the wave based solution leads to accurate treatment of non-reflecting boundaries and straightforward computation of the transmission loss (TL) of the muffler. The goal of optimization is to maximize TL at multiple frequency ranges simultaneously by adjusting chosen shape parameters of the muffler. This task is formulated as a multiobjective optimization problem with the objectives depending on the solution of the simulation model. NSGA-II genetic algorithm is used for solving the multiobjective optimization problem. Genetic algorithms can be easily combined with different simulation methods, and they are not sensitive to the smoothness properties of the objective functions. Numerical experiments demonstrate the accuracy and feasibility of the model-based optimization method in muffler design.
dc.language.isoeng
dc.publisherAcoustical Society of America
dc.relation.ispartofseriesJournal Of Acoustical Society of America
dc.relation.urihttp://dx.doi.org/10.1121/1.3621119
dc.subject.otheräärellisten elementtien menetelmäen
dc.subject.otherwaveguideen
dc.subject.othershape optimizationen
dc.subject.othergenetic algorithmen
dc.subject.otherfinite element methoden
dc.subject.otheraaltoputkifi
dc.subject.othermuodonoptimointifi
dc.subject.othergeneettinen algoritmifi
dc.titleMultiobjective muffler shape optimization with hybrid acoustics modelling
dc.typeArticle
dc.identifier.urnURN:NBN:fi:jyu-2011090611343
dc.contributor.laitosTietotekniikan laitosfi
dc.contributor.laitosFaculty of Information Technologyen
dc.contributor.oppiaineTietotekniikkafi
dc.type.urihttp://purl.org/eprint/type/SubmittedJournalArticle
dc.identifier.doi10.1121/1.3621119
dc.date.updated2011-09-05T21:30:07Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.format.pagerange1359-1369
dc.relation.issn0001-4966
dc.relation.numberinseries3
dc.relation.volume130
dc.type.versionpublishedVersion
dc.rights.copyright© 2011 Acoustical Society of America
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://scitation.aip.org/journals/doc/ASALIB-home/corp/pdf/jasa/jascpyrt.pdf


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