Multiobjective muffler shape optimization with hybrid acoustics modelling

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Show simple item record Airaksinen, Tuomas Heikkola, Erkki 2011-09-06T07:35:03Z 2012-01-01T22:45:03Z 2011
dc.identifier.citation Airaksinen, 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
dc.identifier.issn 0001-4966
dc.identifier.other TUTKAID_46822
dc.description.abstract This 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.iso eng
dc.publisher Acoustical Society of America
dc.relation.ispartofseries Journal Of Acoustical Society of America
dc.rights openAccess fi
dc.rights © 2011 Acoustical Society of America
dc.subject.other äärellisten elementtien menetelmä en
dc.subject.other waveguide en
dc.subject.other shape optimization en
dc.subject.other genetic algorithm en
dc.subject.other finite element method en
dc.subject.other aaltoputki fi
dc.subject.other muodonoptimointi fi
dc.subject.other geneettinen algoritmi fi
dc.title Multiobjective muffler shape optimization with hybrid acoustics modelling
dc.type Article
dc.identifier.urn URN:NBN:fi:jyu-2011090611343
dc.subject.kota 113
dc.contributor.laitos Tietotekniikan laitos fi
dc.contributor.laitos Faculty of Information Technology en
dc.contributor.oppiaine tietotekniikka fi
dc.identifier.volume 130
dc.identifier.issue 3
jyx.tutka.pagetopage 1359-1369
dc.identifier.doi 10.1121/1.3621119 2011-09-05T21:30:07Z
dc.description.version Publisher's PDF
dc.type.coar journal article
dc.description.reviewStatus peerReviewed
dc.format.pagerange 1359-1369
dc.relation.issn 0001-4966
dc.relation.issue 3
dc.type.version publishedVersion
dc.rights.accessLevel openAccess

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