Influence of a liquid on the natural frequencies of almost circular plates


Autoria(s): Gascón Pérez, Manuel; Garcia-Fogeda Nuñez, Pablo
Data(s)

01/10/2014

Resumo

In this work, the influence of the surrounding fluid on the dynamic characteristics of almost circular plates is investigated. First the natural frequencies and normal modes for the plates in vacuum are calculated by a perturbation procedure. The method is applied for the case of elliptical plates with a low value of eccentricity. The results are compared with other available methods for this type of plates with good agreement. Next, the effect of the fluid is considered. The normal modes of the plate in vacuum are used as a base to express the vibration mode of the coupled plate-fluid system. By applying the Hankel transformation the nondimensional added virtual mass 2 increment (NAVMI) are calculated for elliptical plates. Results of the NAVMI factors and the effect of the fluid on the natural frequencies are given and it is shown that when the eccentricity of the plate is reduced to zero (circular plate) the known results of the natural frequencies for circular plates surrounded by liquid are recovered.

Formato

application/pdf

Identificador

http://oa.upm.es/35654/

Idioma(s)

eng

Publicador

E.T.S.I. Aeronáuticos (UPM)

Relação

http://oa.upm.es/35654/1/INVE_MEM_2014_178501.pdf

http://www.worldscientific.com/doi/abs/10.1142/S1758825114500525

info:eu-repo/semantics/altIdentifier/doi/10.1142/S1758825114500525

Direitos

http://creativecommons.org/licenses/by-nc-nd/3.0/es/

info:eu-repo/semantics/openAccess

Fonte

International Journal of Applied Mechanics, ISSN 1758-826X, 2014-10, Vol. 6, No. 5

Palavras-Chave #Aeronáutica
Tipo

info:eu-repo/semantics/article

Artículo

PeerReviewed