Abstract
In this paper, the dynamic instability of hybrid functionally graded porous (FGP) plates under arbitrary periodic load is studied. The FGP plate composes of ceramic, functionally graded material (FGM) and metal. Four FGM core layers discussed include a non-pore perfect FGM layer and three imperfect FGM layers with different porosity distribution patterns. FGM layer properties are described by constituent volume fraction, porosity volume fraction and porosity distribution pattern. The Galerkin method and eigenfunctions transforms are used to establish the Mathieu-type governing equations. The influences of the load parameter, layer thickness ratio, constituent volume fraction, porosity distribution pattern and porosity volume fraction on the dynamic instability of hybrid FGP plates are investigated and discussed.
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