Finite Element Modelling of the Effect of Stiffness and Damping of Vocal Fold Layers on their Vibrations and Produced Sound

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F16%3A00449840" target="_blank" >RIV/61388998:_____/16:00449840 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26210/16:PU116735
Result on the web
<a href="http://dx.doi.org/10.4028/www.scientific.net/AMM.821.657" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/AMM.821.657</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/AMM.821.657" target="_blank" >10.4028/www.scientific.net/AMM.821.657</a>

Result language
angličtina
Original language name
Finite Element Modelling of the Effect of Stiffness and Damping of Vocal Fold Layers on their Vibrations and Produced Sound
Original language description
The study presents a two-dimensional (2D) finite element (FE) model of the fluid-structure- acoustic interaction during self-sustained oscillation of the human vocal folds (VF). The FE model combines the FE models of the VF, trachea and a simplified human vocal tract shaped for phonation of a Czech vowel [a:]. The developed FE model comprises large deformations of the VF tissue, VF contact, fluid-structure interaction (FSI), morphing of the fluid mesh according to the VF motion (Arbitrary Lagrangian-Eulerian approach), solution of unsteady viscous compressible airflow described by the Navier-Stokes equations and airflow separation during the glottis closure. The effect of stiffness and damping of lamina propria, which can be caused by certain VF pathologies, on VF vibrations and produced sound are analyzed. The numerical simulations showed that stiffer lamina propria results in a decrease of the maximum width of glottal opening and in a decrease of the fundamental vibration frequency.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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Project
<a href="/en/project/GAP101%2F12%2F1306" target="_blank" >GAP101/12/1306: Biomechanical modeling of human voice production - way to artificial vocal folds</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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