A physical model of a highly nonlinear string and its use in the music composition Quartet for Strings

2016 ◽  
Vol 139 (4) ◽  
pp. 2204-2204
Author(s):  
Edgar Berdahl ◽  
Stephen D. Beck ◽  
Andrew Pfalz
Keyword(s):  
Physical Model ◽  
Music Composition ◽  
Highly Nonlinear ◽  
Nonlinear String

TRUMPET AND TRUMPET PLAYER: A HIGHLY NONLINEAR INTERACTION STUDIED IN THE FRAMEWORK OF NONLINEAR DYNAMICS

2001 ◽  
Vol 11 (07) ◽  
pp. 1801-1814
Author(s):  
CHRISTOPHE VERGEZ ◽  
XAVIER RODET
Keyword(s):  
Nonlinear Dynamics ◽  
Dynamical Systems ◽  
Real Time ◽  
Physical Model ◽  
Nonlinear Interaction ◽  
Nonlinear Dynamical Systems ◽  
Nonlinear Dynamical ◽  
General Behavior ◽  
Highly Nonlinear

For musical purposes, a real-time physical model of trumpet-like instruments was built. The model exhibits different behaviors which are studied in the framework of nonlinear dynamical systems. Periodic, quasi-periodic, chaotic and intermittency regimes are identified and studied in order to better understand the general behavior of the model, which is essential for musical use.

scholarly journals Preliminary Design for Wave Run-Up in Offshore Wind Farms: Comparison between Theoretical Models and Physical Model Tests

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 492
Author(s):  
Jorge Luengo Frades ◽  
Vicente Negro ◽  
Javier García Barba ◽  
Mario Martín-Antón ◽  
José López-Gutiérrez ◽  
...  
Keyword(s):  
Physical Model ◽  
Theoretical Models ◽  
Model Tests ◽  
Offshore Wind ◽  
Intermediate Water ◽  
Preliminary Design ◽  
Nonlinear Phenomenon ◽  
Physical Model Tests ◽  
Highly Nonlinear ◽  
Run Up

Estimation of wave run-up has been of increasing concern for offshore wind structures and a critical aspect for designers. The highly nonlinear phenomenon makes the study difficult. That is the reason for the very few design rules and experimental data available to estimate it. Actual wave run-up is greater than commonly predicted. The goal of this research is to benchmark the theoretical formulations with the results of the physical model tests performed by Deltares in the field of crest elevation, run-up, forces and pressures. The laboratory reproduced in a wave tank (75 m length; 8.7 m width; 1 m depth; and a 1:60 scale, with Froude similarity) an offshore power converter platform located at intermediate water depths (25–43.80 m) in the Southern North Sea, designed by the Norwegian company Aibel. The purpose of this research is to offer a preliminary design guide for wave run–up using theoretical expressions both for cylinders and gravity based structures (GBS), leaning on the cited laboratory tests to validate the results obtained by such theoretical models.

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.

TO PHYSICAL MODEL OF THE VACANCY CLUSTER TUBES FORMATION AND METAL PROPERTIES CHANGES AFTER DYNAMIC CENTRIFUGAL CASTING

2016 ◽  
pp. 96-103
Author(s):  
E. M. Solovyov ◽  
V. I. Novikov ◽  
B. V. Spitsyn ◽  
M. R. Kiselev ◽  
V. A. Sorokin ◽  
...  
Keyword(s):  
Physical Model ◽  
Centrifugal Casting ◽  
Vacancy Cluster ◽  
Metal Properties

Laser Oscillation in Aggregates of Ultrasmall Si Nanoparticles

2002 ◽  
Vol 728 ◽  
Author(s):  
Munir H. Nayfeh
Keyword(s):  
Stimulated Emission ◽  
Gaussian Beams ◽  
Single Particles ◽  
Nonlinear Characteristics ◽  
Femtosecond Radiation ◽  
Highly Nonlinear ◽  
Line Narrowing ◽  
Si Nanoparticles ◽  
Speckle Patterns ◽  
Spectral Line Narrowing

AbstractWe dispersed electrochemically etched Si into ultrabright ultrasmall nanoparticles, with brightness higher than fluorescein or rhodamine. The emission from single particles is readily detectable. Aggregates or films of the particles exhibit emission with highly nonlinear characteristics. We observe directed blue beams at ∼ 410 nm between faces of aggregates excited by femtosecond radiation at 780 nm; and at ∼ 610 nm from aggregates of red luminescent Si nanoparticles excited by radiation at 550-570 nm from a mercury lamp. Intense directed Gaussian beams, a pumping threshold, spectral line narrowing, and speckle patterns manifest the emission. The results are analyzed in terms of population inversion and stimulated emission in quantum confinement-induced Si-Si dimer phase, found only on ultrasmall Si nanoparticles. This microlasing constitutes an important step towards the realization of a laser on a chip.

Rule-Based and Genetic Algorithm for Automatic Gamelan Music Composition

2017 ◽  
Vol 10 (3) ◽  
pp. 202
Author(s):  
Khafiizh Hastuti ◽  
Azhari Azhari ◽  
Aina Musdholifah ◽  
Rahayu Supanggah
Keyword(s):  
Genetic Algorithm ◽  
Music Composition ◽  
Rule Based
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