On the free vibrations of a piezoceramic hollow sphere |
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Authors: | Veturia Chiroiu Ligia Munteanu |
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Affiliation: | aInstitute of Solid Mechanics, Romanian Academy, Ctin Mille 15, P.O. Box 1-863, Bucharest 010141, Romania |
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Abstract: | 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. |
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Keywords: | Hollow sphere Free vibrations Piezoelasticity Graded material Cnoidal method Genetic algorithm |
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