@inproceedings{7927380955b14219a55ef7d1f470f5cf,
title = "Radiation optimization of piezoelectric plates",
abstract = "The goal of the present work is to control the modal dynamics of a piezo-electric loudspeaker in order to reach directivity of efficiency criteria. In this context, we study the dynamics and sound radiation of a piezoelectric plate biased by a static pressure on one side. This pressure inflates the plate and its forced dynamics around this equilibrium position are then studied. With the help of von Karman plate theory, the static equilibrium position of a plate of arbitrary shape is sought for before writing its linear dynamics around this equilibrium position. This two-step problem is solved numerically using a finite elements software (Freefem++). This results in a series of eigenmodes and eigenfrequencies for each value of the static pressure difference. Next the modal forces due to the piezoelectric coupling are calculted. By considering a baffled plate, the acoustical radiation is computed using the Rayleigh integral. The numerical model is used to perform a parametric optimisation of the system.",
keywords = "Genetic algorithm, Loudspeaker, Optimisation, Piezoelectic plates, Radiation",
author = "Olivier Doar{\'e} and Emil Garnell and Corinne Rouby",
note = "Publisher Copyright: {\textcopyright} 2019 Proceedings of the International Congress on Acoustics. All rights reserved.; 23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 ; Conference date: 09-09-2019 Through 23-09-2019",
year = "2019",
month = jan,
day = "1",
doi = "10.18154/RWTH-CONV-239425",
language = "English",
series = "Proceedings of the International Congress on Acoustics",
publisher = "International Commission for Acoustics (ICA)",
pages = "6211--6218",
editor = "Martin Ochmann and Vorlander Michael and Janina Fels",
booktitle = "Proceedings of the 23rd International Congress on Acoustics",
}