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 language | English |
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Title of host publication | Proceedings of the 9th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Application |
Number of pages | 4 |
Publisher | Firenze University Press |
Publication date | 2015 |
Publication status | Published - 2015 |
Event | The 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 2015 → 4 Sept 2015 http://pevoc-maveba.dinfo.unifi.it/ |
Conference
Conference | The 11th Pan-European Voice Conference (PEVOC 2015) and the 9th International Workshop on Models and Analysis of Vocal Emissions for Biomedical Application (MAVEBA 2015) |
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Country/Territory | Italy |
City | Florence |
Period | 31/08/2015 → 04/09/2015 |
Internet address |