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Erschienen in: Structural and Multidisciplinary Optimization 3/2014

01.09.2014 | RESEARCH PAPER

Analysis and design of acoustic transition sections for impedance matching and mode conversion

verfasst von: Eddie Wadbro

Erschienen in: Structural and Multidisciplinary Optimization | Ausgabe 3/2014

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Abstract

This work considers the problem of designing passive transition sections to provide impedance matching and mode conversion for acoustic wave propagation. The base configuration consists of two waveguides connected by a transition section. The objective is to find a placement of material inside this section to make it function as an impedance matcher or a mode converter with minimal losses. A finite element approximation of the Helmholtz equation in a truncated domain together with Dirichlet-to-Neumann type non-reflecting boundary conditions models the wave propagation. Material distribution techniques solve the resulting topology optimization problem and the resulting interfacial devices show good transmission properties.

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Metadaten
Titel
Analysis and design of acoustic transition sections for impedance matching and mode conversion
verfasst von
Eddie Wadbro
Publikationsdatum
01.09.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Structural and Multidisciplinary Optimization / Ausgabe 3/2014
Print ISSN: 1615-147X
Elektronische ISSN: 1615-1488
DOI
https://doi.org/10.1007/s00158-014-1058-2

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