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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Computational modelling of mucosal wave propagation in human vocal folds
 Vintr, Lukáš ; Hájek, Petr (referee) ; Švancara, Pavel (advisor)
The aim of this thesis is to analyze the influence of material parameters of individual layers of vocal cord tissue on the propagation of mucosal waves on the vocal cord model. First, a brief overview of current approaches in experimental and computational modeling of mucosal wave propagation is given on the basis of the literature. Furthermore, the influence of the modulus of elasticity in the tensile epithelium and the surface lamina of propria on the natural frequencies and shapes of oscillations is investigated by means of modal analysis. Mucosal wave propagation was then analyzed using transient analysis in response to the vocal cords to shock excitation by force on the lower part of the vocal cords. The influence of material parameters on the amplitude and speed of mucosal wave propagation over the vocal cord surface was evaluated. In the end of this thesis, the recommendation is given, according to the recorded results, to use lower modulus of elasticity in tension of the surface lamina propria in models with interaction with air flow, because there is much more pronounced mucosal wave propagation corresponding to the behavior of real human vocal cords.
Detailed record
Computational modelling of mucosal wave propagation in human vocal folds
 Vintr, Lukáš ; Hájek, Petr (referee) ; Švancara, Pavel (advisor)
The aim of this thesis is to analyze the influence of material parameters of individual layers of vocal cord tissue on the propagation of mucosal waves on the vocal cord model. First, a brief overview of current approaches in experimental and computational modeling of mucosal wave propagation is given on the basis of the literature. Furthermore, the influence of the modulus of elasticity in the tensile epithelium and the surface lamina of propria on the natural frequencies and shapes of oscillations is investigated by means of modal analysis. Mucosal wave propagation was then analyzed using transient analysis in response to the vocal cords to shock excitation by force on the lower part of the vocal cords. The influence of material parameters on the amplitude and speed of mucosal wave propagation over the vocal cord surface was evaluated. In the end of this thesis, the recommendation is given, according to the recorded results, to use lower modulus of elasticity in tension of the surface lamina propria in models with interaction with air flow, because there is much more pronounced mucosal wave propagation corresponding to the behavior of real human vocal cords.
Detailed record

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