Comparison of different approaches to determination of resonant frequencies of coupled vibro-acoustic systems

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00370520" target="_blank" >RIV/68407700:21220/23:00370520 - isvavai.cz</a>
Result on the web
<a href="https://www.ugn.cas.cz/event/2023/sna/files/sna23-sbornik.pdf" target="_blank" >https://www.ugn.cas.cz/event/2023/sna/files/sna23-sbornik.pdf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Comparison of different approaches to determination of resonant frequencies of coupled vibro-acoustic systems
Original language description
The contribution deals with the 2D vibro-acoustic model of human phonation. Its aim is to determine first few acoustic resonant frequencies for the setup motivated by the phonation into tubes or straws. The first acoustic resonance during this therapeutic technique is significantly changed in comparison to common phonation without tubes. This change can be explained by considerable interaction of acoustics with mechanically compliant vocal folds and vice versa, see [Horacek, etal., 2017]. Here, the vocal folds vibrations are described using linear elasticity theory and the acoustics is modelled with the help of acoustic potential. The both subproblems are numerically approximated by the finite element method and the monolithic coupling strategy is chosen. Two approaches of resonant frequencies determination is applied - the modal analysis and the tranfer function approach. In the end the numerical results of the both approaches are compared.
Czech name
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Czech description
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Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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