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Free vibration investigation of submerged thin circular plate

Article dans une revue avec comité de lecture
Author
ccYANG, Xi
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
ccEL BAROUDI, Adil
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
ccLE POMMELLEC, Jean Yves
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

URI
http://hdl.handle.net/10985/23241
Date
2020-03-20
Journal
International Journal of Applied Mechanics

Abstract

Free vibration of coupled system including clamped-free thin circular plate with hole submerged in three dimensional cylindrical container filled with inviscid, irrotational and compressible fluid is investigated in the present work. Numerical approach based on the finite element method (FEM) is performed using the Comsol Multiphysics software, in order to analyze qualitatively the vibration characteristics of the plate. Plate modeling is based on Kirchhoff-Love plate theory. Velocity potential is deployed to describe the fluid motion since the small oscillations induced by the plate vibration is considered. Bernoulli's equation together with potential theory are applied to get the fluid pressure on the free surface of the plate. To prove the reliability of the present numerical solution, a comparison is made with the results in the literature, which shows a very good agreement. Then, different parameters effect including fluid density, fluid height, free surface wave, hole radius and hole eccentricity on the natural frequencies of the coupled system is discussed in detail. Some three-dimensional mode shapes of the submerged plate are illustrated. Furthermore, the obtain results can serve as benchmark solutions for the vibration control, parameter identification and damage detection of plate.

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