FE model of the human vocal folds considering fluid-structure interaction

0343364 - ÚT 2011 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Švancara, P. - Horáček, Jaromír - Hrůza, V.
FE model of the human vocal folds considering fluid-structure interaction.
Engineering Mechanics 2010. Prague: Institute of Thermomechanics AS CR, v. v. i., 2010 - (Zolotarev, I.), s. 147-148. ISBN 978-80-87012-26-0.
[Engineering Mechanics 2010. Svratka (CZ), 10.05.2010-13.05.2010]
Grant CEP: GA ČR GA101/08/1155
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: biomechanics of voice * simulation of voicing * vocal folds self oscillation
Kód oboru RIV: BI - Akustika a kmity
www.engmech.cz

The study presents three-dimensional finite element (FE) model of flow induced oscillations of the human vocal folds in interaction with acoustic processes in the simplified vocal tract model. The FE model includes vocal folds pretension before phonation, large deformations of the vocal fold tissue, vocal folds contact, fluid-structure interaction, morphing the fluid mesh according the vocal folds motion, unsteady viscous compressible airflow and airflow separation during the glottis closure. Fluid-structure interaction is solved using partitioned approach, where the results of solution for the flow are transferred as loads on the vocal folds surface, then the vocal folds motion is computed and then again the equations for the flow are solved. Numerical results confirmed that the developed model can be used for simulation of the vocal folds self-oscillations, and especially for numerical simulations of quantities that are difficult to measure in clinical research.
Trvalý link: http://hdl.handle.net/11104/0185863