Impact stress in a self-oscillating model of human vocal folds

0395621 - ÚT 2014 RIV PT eng C - Konferenční příspěvek (zahraniční konf.)
Horáček, Jaromír - Bula, Vítězslav - Radolf, Vojtěch - Šidlof, Petr
Impact stress in a self-oscillating model of human vocal folds.
Proceedings of the 11th International Conference on Vibration Problems. Lisbon: APMTAC, 2013 - (Dimitrovová, Z.; Goncalves, R.), s. 1-10. ISBN 978-989-96264-4-7.
[International Conference on Vibration Problems 2013 /11./. Lisbon (PT), 09.09.2013-12.09.2013]
Grant CEP: GA ČR GAP101/12/1306
Institucionální podpora: RVO:61388998
Klíčová slova: fluid-structure interaction * flutter * biomechanics of voice modeling * phonation * aeroelasticity
Kód oboru RIV: BI - Akustika a kmity

The impact stress is one of the possible loading factors in phonation and it is considered as the main traumatizing mechanism in voice production and the main cause of vocal fold nodules. The contribution presents in vitro measurement of impact stress in a vocal folds replica made of silicon rubber excited by airflow with synchronous registration of the flow induced vocal fold vibrations using a high speed camera, measurement of the subglottal dynamic and mean air pressures and the radiated acoustic pressure. The airflow coming to the 1:1 scaled model of trachea was increasing from the phonation threshold up to the airflow rate 0.6 l/s and subglottal pressure 2.3 kPa, which is in the range of physiologically relevant values for a normal human voice production.
Trvalý link: http://hdl.handle.net/11104/0224068