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On the free vibrations of a piezoceramic hollow sphere

Domenii publicaţii > Matematica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Veturia Chiroiu, Ligia Munteanu

Editorial: Elsevier, Mechanics Research Communications, 34 (2), p.pp.123-129, 2007.


The aim of the paper is to analyze the free vibrations of a piezoceramic hollow sphere with radial polarization. Using the cnoidal method and a genetic algorithm solves the equations of a radially inhomogeneous spherically isotropic piezoelastic medium. The Reddy and the cosine laws represent the functionally graded property of material. It is seen that for a piezoceramic hollow sphere, the piezoelectric effect consists in increasing the values for the natural frequencies in the specified classes of vibrations.

Cuvinte cheie: Hollow sphere, Free vibrations, Piezoelasticity, Graded material, Cnoidal method, Genetic algorithm