Finite element modelling of human vocal folds self-oscillation

0427721 - ÚT 2015 US eng A - Abstract
Švancara, Pavel - Horáček, Jaromír - Švec, J.G.
Finite element modelling of human vocal folds self-oscillation.
9th ICVPB. Salt Lake City: National Center for Voice and Speech, University of Utah, 2014. s. 83.
[International Conference on Voice Physiology and Biomechanics /9./. 10.04.2014-12.04.2014, Salt Lake City]
Institutional support: RVO:61388998
Keywords : biomechanics of voice * fluid-structure-acoustic interaction * finite element method * videokymography
Subject RIV: BI - Acoustics

The study presents a three-dimensional (3D) finite element (FE) model of the flow-induced self-oscillation of the human vocal folds in interaction with acoustics in the simplified vocal tract models. The effect of vocal-fold layers thickness and material properties on simulated videokymographic (VKG) images and produced sound spectra is analyzed. The 3D vocal tract models of the acoustic spaces for Czech vowels [a:], [i:] and [u:] were created by converting the data from the magnetic resonance images (MRI). The fluid-structure interaction is solved using explicit coupling scheme with separated solvers for structure and fluid domain. For modelling the acoustic wave propagation, compressible Navier-Stokes equations were utilized. The developed FE model can be used to numerically simulate pathological changes in the vocal-fold tissue and their influence on the voice production.
Permanent Link: http://hdl.handle.net/11104/0233460