Mechanisms of irregular vibration in a physical model of the vocal folds

2006 ◽  
Vol 120 (3) ◽  
pp. EL36-EL42 ◽  
Author(s):  
David A. Berry ◽  
Zhaoyan Zhang ◽  
Juergen Neubauer ◽  
Anders Lofqvist
Keyword(s):  
Physical Model ◽  
Vocal Folds

Coherent structures of the near field flow in a self-oscillating physical model of the vocal folds

2007 ◽  
Vol 121 (2) ◽  
pp. 1102-1118 ◽  
Author(s):  
Jürgen Neubauer ◽  
Zhaoyan Zhang ◽  
Reza Miraghaie ◽  
David A. Berry
Keyword(s):  
Physical Model ◽  
Coherent Structures ◽  
Near Field ◽  
Vocal Folds

Aerodynamically and acoustically driven modes of vibration in a physical model of the vocal folds

2006 ◽  
Vol 120 (5) ◽  
pp. 2841-2849 ◽  
Author(s):  
Zhaoyan Zhang ◽  
Juergen Neubauer ◽  
David A. Berry
Keyword(s):  
Physical Model ◽  
Vocal Folds ◽  
Modes Of Vibration

A Physical Model of the Vocal Folds

2003 ◽  
Author(s):  
Scott L. Thomson ◽  
Luc Mongeau ◽  
Steven H. Frankel
Keyword(s):  
Physical Model ◽  
Vocal Fold ◽  
Vocal Folds ◽  
Operating Conditions ◽  
Physical Models ◽  
Length Scale ◽  
Fluid Structure Interactions ◽  
Fluid Structure ◽  
Voice Production ◽  
Flexible Polymer

Voice production is a result of the nonlinear, coupled interaction between laryngeal airflow and vocal fold tissue dynamics. Studying these fluid-structure interactions can contribute to the understanding of the mechanisms of speech production, leading to improved surgical, clinical, and pedagogical care. Aside from experiments using excised larynges (e.g., Berry et al., 2001) and a model of the superficial vocal fold layer (e.g., Chan et al., 1997), no studies appear to have been reported in which self-oscillating physical models were used that were similar to the human vocal folds in the following aspects: length scale, geometry, and dynamic and mechanical behavior. This paper describes a self-oscillating physical model designed to more closely represent the human vocal folds in terms of the above key parameters. The model was constructed using a flexible polymer casting and exhibited regular, self-sustained, large-amplitude oscillations at frequencies and operating conditions close to those found in human phonation. The model demonstrated potential for further studies involving laryngeal fluid-structure interactions.

EXPERIMENTAL STUDIES OF CAR PROPERTIES ON A PHYSICAL MODEL

2019 ◽  
pp. 10-16
Author(s):  
Oleksii Timkov ◽  
Dmytro Yashchenko ◽  
Volodymyr Bosenko
Keyword(s):  
Mathematical Model ◽  
Remote Control ◽  
Physical Model ◽  
Model Experiment ◽  
Experimental Studies ◽  
Electrical Energy ◽  
Short Term ◽  
Motor Current ◽  
Memory Card ◽  
The Mathematical Model

The article deals with the development of a physical model of a car equipped with measuring, recording and remote control equipment for experimental study of car properties. A detailed description of the design of the physical model and of the electronic modules used is given, links to application libraries and the code of the first part of the program for remote control of the model are given. Atmega microcontroller on the Arduino Uno platform was used to manage the model and register the parameters. When moving the car on the memory card saved such parameters as speed, voltage on the motor, current on the motor, the angle of the steered wheel, acceleration along three coordinate axes are recorded. Use of more powerful microcontrollers will allow to expand the list of the registered parameters of movement of the car. It is possible to measure the forces acting on the elements of the car and other parameters. In the future, it is planned to develop a mathematical model of motion of the car and check its adequacy in conducting experimental studies on maneuverability on the physical model. In addition, it is possible to conduct studies of stability and consumption of electrical energy. The physical model allows to quickly change geometric dimensions and mass parameters. In the study of highway trains, this approach will allow to investigate the various layout schemes of highway trains in the short term. It is possible to make two-axle road trains and saddle towed trains, three-way hitched trains of different layout. The results obtained will allow us to improve not only the mathematical model, but also the experimental physical model, and move on to further study the properties of hybrid road trains with an active trailer link. This approach allows to reduce material and time costs when researching the properties of cars and road trains. Keywords: car, physical model, experiment, road trains, sensor, remote control, maneuverability, stability.

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