How Acoustic Resonances Can Support Self-sustained Oscillations of Acoustic-Mechanical Dynamic System

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F20%3A00538751" target="_blank" >RIV/61388998:_____/20:00538751 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/978-981-15-8049-9_24" target="_blank" >http://dx.doi.org/10.1007/978-981-15-8049-9_24</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/978-981-15-8049-9_24" target="_blank" >10.1007/978-981-15-8049-9_24</a>

Result language
angličtina
Original language name
How Acoustic Resonances Can Support Self-sustained Oscillations of Acoustic-Mechanical Dynamic System
Original language description
Flutter instabilities of structures aremostly unwanted phenomena in technical applications excluding some energy harvesting systems that utilize wind or water flow-induced aeroelastic instabilities of the systems. Another situation is in biomechanics of voice where the flutter instability of human vocal folds is a necessary condition for singing and speaking, because flow-induced vibrations of the vocal folds create the voice source. The present experimental modelling study shows that the vocal fold self-oscillations can be strongly influenced by interaction with acoustic resonances of the human vocal tract in case when the vocal tract is prolonged by so-called resonance tube used in voice therapy methods. This influence is demonstrated by constructing the relationships of subglottal pressure (pressure drop between trachea and ambient air in front of the mouth) variation in time versus glottal area variation (opening and closing of the glottis). It is shown that a part of the airflow energy required for phonation is substituted by acoustic energy, utilizing the first acoustic resonance.
Czech name
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Czech description
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Project
<a href="/en/project/GA19-04477S" target="_blank" >GA19-04477S: Modelling and measurements of fluid-structure-acoustic interactions in biomechanics of human voice production</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 14th International conference on vibration problems. ICOVP 2019
ISBN
978-981-15-8048-2
ISSN
2195-4356
e-ISSN
2195-4364
Number of pages
11
Pages from-to
389-399
Publisher name
Springer
Place of publication
Singapur
Event location
Hersonissos
Event date
Sep 1, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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