Revistas UPV. Editorial UPV

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Desde esta comunidad se tiene acceso a artículos en texto completo de publicaciones periódicas editadas por diferentes unidades académicas de la Universitat Politècnica de València (UPV) gestionadas en la plataforma OJS a través del portal Polipapers

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Browsing Revistas UPV. Editorial UPV by Sponsor "Agència Valenciana de la Innovació"

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    Modelización de cerámicas y transductores piezoeléctricos vibrando en espesor mediante matrices de transferencia
    (Universitat Politècnica de València, 2019-02-08) Jiménez, Noé; Camarena, Francisco; Generalitat Valenciana; European Regional Development Fund; Agència Valenciana de la Innovació
    [EN] In this work we present the modeling of a piezoelectric ceramic vibrating in thickness mode using transfer matrices. The complete modeling of the vibratory behavior of a piezoelectric ceramic is a complex problem.This is mainly due to the tensorial denition of the involved stresses and the anisotropy of the piezoelectric solids, both arising due to their intrinsic elastic and piezoelectric properties. This problem is recurrent when teaching of Acoustics and Ultrasound, Telecommunications and electronic sensors. The modeling using transfer matrices provides a simple but accurate method, since it captures the main physical phenomena of the electromechanical problem. In particular, the presented modeling allows a high degree of freedom to modify the design by adding layers of different materials and / or electronic components, with, in addition, it also allows the student to obtain an analytical model of the piezoelectric effect and the study of the electrical-elastic system.
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    Modelizando el campo acústico generado por superficies vibrantes
    (Universitat Politècnica de València, 2022-07-29) Andrés, Diana; Camarena Femenia, Francisco; Jiménez González, Noé; Dpto. de Física Aplicada; Escuela Técnica Superior de Ingeniería Industrial; Escuela Politécnica Superior de Gandia; Instituto de Instrumentación para Imagen Molecular; Agencia Estatal de Investigación; Ministerio de Ciencia, Innovación y Universidades; Generalitat Valenciana; Agència Valenciana de la Innovació
    [EN] When a surface vibrates compressing the medium on its front, it generates acoustic waves. This is the case of loudspeakers, which generate acoustic waves at audible frequencies by means of a moving surface. In this paper, we present a tutorial to model the acoustic radiation of vibrating surfaces, differentiating between flat and curved circular geometries. First, we derive the models describing the radiation of moving surfaces, and we will obtain analytical solutions for the simplest cases. For the complex ones, the model will be integrated numerically. Both solutions have been incorporated into a simple graphical interface, with which the acoustic field generated by the different surfaces can be visualized by varying their radiation characteristics. The proposed methodology allows to deepen in the analysis of acoustic wave radiation, and to present an example of modeling for Acoustics students, from modeling to obtaining analytical and numerical solutions.