scholarly journals Three-dimensional biomechanical properties of human vocal folds: Parameter optimization of a numerical model to matchin vitrodynamics

2012 ◽  
Vol 131 (2) ◽  
pp. 1378-1390 ◽  
Author(s):  
Anxiong Yang ◽  
David A. Berry ◽  
Manfred Kaltenbacher ◽  
Michael Döllinger
Keyword(s):  
Numerical Model ◽  
Parameter Optimization ◽  
Three Dimensional ◽  
Vocal Folds ◽  
Biomechanical Properties

Determination of Mechanical Stresses in Vibration and Contact During Flow-Structure-Interaction in Vocal Folds

2011 ◽  
Author(s):  
Pinaki Bhattacharya ◽  
Thomas H. Siegmund
Keyword(s):  
Surface Deformation ◽  
Three Dimensional ◽  
Vocal Folds ◽  
Biomechanical Properties ◽  
Mechanical Stresses ◽  
Physical Models ◽  
Tissue Properties ◽  
Transient Nature ◽  
Superior Surface ◽  
Glottal Flow

Mechanical stresses in vocal folds (VFs) developed during self-oscillation — due to interaction with the glottal flow — play an important role in tissue damage and healing. Contact stresses occurring due to collision between VFs modify both self-oscillation characteristics, as well as stresses. The complexity of the problem is increased due to other factors acting in combination: transient nature of the flow, non-linear and anisotropic biomechanical properties of the VFs, and acoustic loading. Experiments with physical models [1] have attempted to deduce the state of stress in the interior through measurement of superior surface deformation. However, these methods pose challenges in data acquisition. on the other hand, full three-dimensional transient computational analysis of a self-oscillating and contacting VF model requires highly sophisticated algorithms as well as prohibitive resource usage. Not surprisingly, therefore, it has not been conducted until now. We hypothesize that a high-fidelity numerical simulation incorporating realistic tissue properties is essential to accurately determine stresses within VFs during self-oscillation and contact.

A THREE-DIMENSIONAL NUMERICAL MODEL FOR SELECTIVE WITHDRAWAL IN COASTAL AREA

2018 ◽  
Vol 74 (5) ◽  
pp. I_571-I_576
Author(s):  
Yasuo NIIDA ◽  
Norikazu NAKASHIKI ◽  
Takaki TSUBONO ◽  
Shin’ichi SAKAI ◽  
Teruhisa OKADA
Keyword(s):  
Numerical Model ◽  
Coastal Area ◽  
Three Dimensional ◽  
Selective Withdrawal

scholarly journals Blowing and drifting snow in Alpine terrain: numerical simulation and related field measurements

1998 ◽  
Vol 26 ◽  
pp. 174-178 ◽  
Author(s):  
Peter Gauer
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Three Dimensional ◽  
Field Measurements ◽  
Blowing Snow ◽  
Related Field ◽  
Drifting Snow ◽  
Physically Based ◽  
Snow Transport

A physically based numerical model of drifting and blowing snow in three-dimensional terrain is developed. The model includes snow transport by saltation and suspension. As an example, a numerical simulation for an Alpine ridge is presented and compared with field measurements.

Three-dimensional numerical model of short-circuiting transfer in GMAW

2020 ◽  
Vol 64 (12) ◽  
pp. 2011-2017
Author(s):  
K. Hashimoto ◽  
Y. Hirata ◽  
K. Kadota ◽  
Y. Ogino
Keyword(s):  
Numerical Model ◽  
Three Dimensional

Three-dimensional numerical model for open-channels with free-surface variations

2003 ◽  
Vol 41 (1) ◽  
pp. 110-112
Author(s):  
ZhixiaN. Cao ◽  
Rodney Day ◽  
Sarah Liriano
Keyword(s):  
Free Surface ◽  
Numerical Model ◽  
Three Dimensional ◽  
Open Channels
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