Thermo-Acoustic Effects on the Natural Frequencies of Vibration of an Elastic Rectangular Panel

Gascón Pérez, Manuel (2021). Thermo-Acoustic Effects on the Natural Frequencies of Vibration of an Elastic Rectangular Panel. "International Journal of Applied Mechanics", v. 13 (n. 2); pp. 1-17. ISSN 1758-826X. https://doi.org/10.1142/S1758825121500198.

Description

Title: Thermo-Acoustic Effects on the Natural Frequencies of Vibration of an Elastic Rectangular Panel
Author/s:
  • Gascón Pérez, Manuel
Item Type: Article
Título de Revista/Publicación: International Journal of Applied Mechanics
Date: April 2021
ISSN: 1758-826X
Volume: 13
Subjects:
Freetext Keywords: rectangular panel; thermo-acoustic behaviour; fluid-structure; natural frequencies; boundary element method.
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Aeronaves y Vehículos Espaciales
Creative Commons Licenses: None

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Abstract

In this paper, the thermo-acoustic behaviour of a rectangular panel fully immersed in a compressible fluid at rest is investigated. A boundary element method BEM has been employed taking into account the Kirchhoff-Helmholtz K-H integral equation for the acoustic pressure and with the fluid-plate interface boundary condition the acoustic pressure jump over the panel is calculated. The thermal effects are considered regarding in the form of a uniform increment of temperature of the panel and are analysed in order to prevent the buckling phenomena. The deformation modes of the panel correspond to the vacuum case. Applying a collocation method for the panel equation, the natural frequencies are obtained . The effect of several geometric parameters regarding different thermal loads, on these frequencies are evaluated. Furthermore, the influence of the wave number for different temperatures of the panel on the acoustic damping ratio is evaluated, as well as the acoustic radiation efficiency for the different modes. The verification of the method is proven with other works.

More information

Item ID: 66628
DC Identifier: http://oa.upm.es/66628/
OAI Identifier: oai:oa.upm.es:66628
DOI: 10.1142/S1758825121500198
Official URL: https://www.worldscientific.com/doi/abs/10.1142/S1758825121500198
Deposited by: Manuel Gascón Pérez
Deposited on: 07 Apr 2021 06:38
Last Modified: 07 Apr 2021 06:38
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