Free Vibration Analysis of Advanced Composite Plates with Porosities
Keywords:
Composite plates,FG, high order theory, Hamilton's principle,free vibration; porosity.Abstract
This article presents the free vibration analysis of advanced composite plates such as functionally graded plates and of simply supported plate porous using a high order shear deformation theory. In is work the material properties of the porous plate FG vary across the thickness. The proposed theory contains four unknowns unlike the other theories. Therefore, it is useless to use the shear correction factors. The Hamilton's principle will be used herein to determine the equations of motion. Since, the plate are simply supported the Navier procedure will be retained. To show the precision of this model, several comparisons have been made between the present results and those of existing theories in the literature for non-porous plates. Effects of the exponent graded and porosity factors are investigated.