Abstract
Functionally graded porous (FGP) composites reinforced with graphene platelets (GPL) are a new class of advanced nanocomposite that has surfaced recently in the past years in which the microstructure (mainly porosity) of the single-phase material (i.e., metal or polymer) varies continuously in the preferred directions to meet various functional requirements. Key advantages like low density, light-weightiness, high stiffness-to-weight ratios, excellent energy absorption, and thermal management properties make them the most promising candidates for structural and functional engineering applications. The application of these nanocomposites into the basic structural elements like arches, plates, and shells which are widely used in aerospace industries, requires a thorough and accurate analysis of these components which are made of these nanocomposite materials considering various environmental effects like temperature, moisture, etc.Therefore, this paper conducts the free vibration analysis of functionally graded (FG) porous arches reinforced with graphene platelets (GPLs) which are subjected to thermal loading conditions. A C0 finite element model based on higher-order shear deformation theory has been utilized to predict the structural response of the FG-GPL reinforced porous arches. Convergence and validation have also been performed to ascertain the accuracy of the present finite element formulation. Effect of various influencing parameters such as volume content of GPLs, porosity index, and temperature difference on frequency parameter has been shown, and various mode shapes for different curvature angles and boundary conditions have also been plotted. It is shown that graphene platelets (GPLs) as reinforcement can increase the stiffness of FG porous arches significantly under thermal environment and the mode shapes of FG-GPL reinforced arches are mainly the function of the curvature angle and boundary conditions.
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