Publication detail

FE Modelling of the Influence of the Lamina Propria Properties on the Vocal Folds Vibration and Produced Sound for Specific Czech Vowels

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"
}