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Conference Papers Year : 2015

Hydro-elastic finite element model of a vocal fold replica

Abstract

Experimental vocal fold replicas are currently used in speech production studies in order to validate simplified models on controllable devices. In addition to in-situ mechanical characterization, it is important to be able to understand their behavior when changing assembly properties or using parameters control to tune the folds, by developing a model able to predict their static and dynamic motions. This also enables to describe more complex vibration behaviors which could be harder to observe experimentally. This paper first presents a hydro-elastic finite element model of a single vocal fold. Numerical results are discussed, along with a parametric analysis. Then this model is extended to take into account the effect of the water pressure on the inflation of the folds and on the resonance frequencies. A hyper-elastic calculation is first used to simulate the latex inflation. An updated Lagrangian approach processes it as a pre-stress term in a modal analysis calculation for the small amplitude vibrations of the hydro-elastic structure, which allows to model the water pressure influence on the mechanical resonances of the simulated replica.
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Dates and versions

hal-01181630 , version 1 (31-07-2015)

Identifiers

  • HAL Id : hal-01181630 , version 1

Cite

Nicolas Hermant, Xavier Pelorson, Paul Luizard, Franz Chouly, Fabrice Silva. Hydro-elastic finite element model of a vocal fold replica. ICSV 2015 - 22nd International Congress on Sound and Vibration, Jul 2015, Florence, Italy. ⟨hal-01181630⟩
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