Vocal Fold Collision Modeling

Alba Granados, Jonas Brunskog, M. K. Misztal

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Abstract

When vocal folds vibrate at normal speaking frequencies, collisions occurs. The numerics and formulations behind a position-based continuum model of contact is an active field of research in the contact mechanics community. In this paper, a frictionless three-dimensional finite element model of the vocal fold collision is proposed, which incorporates different procedures used in contact mechanics and mathematical optimization theories. The penalty approach and the Lagrange multiplier method are investigated. The contact force solution obtained by the penalty formulation is highly dependent on the penalty parameter value. Furthermore, the Lagrange approach shows poor results with regard to instantaneous contact force estimation. This motivates the use of an Augmented Lagrange approach to regularize the Lagrange contact force solution. Finally, the effect of the interpenetration volume on contact force and contact area computations is illustrated.
Original languageEnglish
Title of host publicationProceedings of the 9th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Application
Number of pages4
PublisherFirenze University Press
Publication date2015
Publication statusPublished - 2015
EventThe 11th Pan-European Voice Conference (PEVOC 2015) and the 9th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Application (MAVEBA 2015) - Florence, Italy
Duration: 31 Aug 20154 Sep 2015
http://pevoc-maveba.dinfo.unifi.it/

Conference

ConferenceThe 11th Pan-European Voice Conference (PEVOC 2015) and the 9th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Application (MAVEBA 2015)
CountryItaly
CityFlorence
Period31/08/201504/09/2015
Internet address

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