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HÁJEK, P. ŠVANCARA, P. HORÁČEK, J. ŠVEC, J.
Original Title
FE Modelling of the Influence of the Lamina Propria Properties on the Vocal Folds Vibration and Produced Sound for Specific Czech Vowels
Type
conference paper
Language
English
Original Abstract
Presented two-dimensional (2D) finite element (FE) model of the flow-induced self-oscillation of the human vocal folds (VF) enables solving fluid-structure-acoustic interaction occurring during phonation. The aim is to analyze the acoustic wave propagation for Czech vowels [a:], [i:] and [u:] on change of the superficial lamina propria (SLP) properties. The 2D FE model includes setting to phonatory position with the VF pretension, large deformation of VF tissues and their contact (structural model) and unsteady viscous compressible airflow separated during glottal closure and described by the Navier-Stokes (NS) equations (fluid model, comprises of the FE model of the trachea, glottis and the vocal tract (VT)). The fluid mesh morphs according to the VF motion (Arbitrary Lagrangian-Eulerian approach) and geometry of the aforementioned VT was obtained from MRI. Such a symmetrical or unsymmetrical variation of the SLP properties accompanies diverse VF pathologies, thus numerical results may reveal new phenomena of them.
Keywords
biomechanics of voice; finite element method; fluid-structure-acoustic interaction; simulation of phonation
Authors
HÁJEK, P.; ŠVANCARA, P.; HORÁČEK, J.; ŠVEC, J.
Released
31. 10. 2016
Publisher
University of West Bohemia
Location
Plzeň
ISBN
978-80-261-0647-0
Book
Computational Mechanics 2016: Book of extended abstracts
Edition number
32
Pages from
23
Pages to
24
Pages count
2
BibTex
@inproceedings{BUT129377, author="Petr {Hájek} and Pavel {Švancara} and Jaromír {Horáček} and Jan G. {Švec}", title="FE Modelling of the Influence of the Lamina Propria Properties on the Vocal Folds Vibration and Produced Sound for Specific Czech Vowels", booktitle="Computational Mechanics 2016: Book of extended abstracts", year="2016", number="32", pages="23--24", publisher="University of West Bohemia", address="Plzeň", isbn="978-80-261-0647-0" }