000012411 001__ 12411
000012411 005__ 20160816141444.0
000012411 04107 $$aeng
000012411 046__ $$k2016-05-09
000012411 100__ $$aHájek, P.
000012411 24500 $$aNUMERICAL SIMULATION OF THE EFFECT OF STIFNESS OF LAMINA PROPRIA ON THE SELF-SUASTAINED OSCILLATION OF THE VOCAL FOLDS

000012411 24630 $$n22.$$pEngineering Mechanics 2016
000012411 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Praha
000012411 506__ $$arestricted
000012411 520__ $$2eng$$aA two-dimensional (2D) finite element (FE) model of the fluid-structure-acoustic interaction during self-sustained oscillation of the human vocal folds (VF) is presented in this paper. The aim is to analyze the effect of stiffness of lamina propria on VF vibrations. Such stiffness change can be caused by some VF pathologies. The developed FE model consists of the FE models of the VF, trachea and a simplified human vocal tract. The vocal tract model shaped for simulation of phonation of Czech vowel [a:] was created by converting data from the magnetic resonance images (MRI). The developed FE model includes VF contact, large deformations of the VF tissue, fluid-structure interaction (FSI), moving boundary of the fluid mesh (Arbitrary Lagrangian-Eulerian (ALE) approach), airflow separation during the glottis closure and solution of unsteady viscous compressible airflow described by the Navier-Stokes equations. The numerical simulations showed that higher values of lamina propria Young's modulus (stiffer lamina propria) result in a decrease of the maximum glottis opening. Stiffer lamina propria also requires the use of higher subglottal pressure to initiate self-sustained vibration of the VF. 

000012411 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012411 653__ $$aSimulation of phonation, Fluid-structure-acoustic interaction, Finite element method, Biomechanics of voice

000012411 7112_ $$aEngineering Mechanics 2016$$cSvratka, CZ$$d2016-05-09 / 2016-05-12$$gEM2016
000012411 720__ $$aHájek, P.$$iŠvancara, P.$$iHoráček, J.$$iŠvec, J.G.
000012411 8560_ $$ffischerc@itam.cas.cz
000012411 8564_ $$s1371337$$uhttps://invenio.itam.cas.cz/record/12411/files/041bo_o_bio.pdf$$yOriginal version of the author's contribution as presented on CD, id 041, section BIO.
000012411 962__ $$r12369
000012411 980__ $$aPAPER