Abstract
The investigation of graphene-reinforced porous composites has garnered significant interest due to their exceptional mechanical, thermal, and electrical properties, positioning them as promising materials for advanced structural applications. To fully harness the potential of these materials, numerical modeling becomes essential for understanding their behavior and optimizing their performance for specific engineering applications. In the present study, the non-linear bending response of functionally graded (FG) circular sandwich porous plates reinforced with graphene platelets is systematically analyzed under varying boundary conditions. The plates are subjected to a uniform transverse load and a thermal gradient, with distributions of graphene platelets and porosity graded along the thickness. The effective material properties, including Poisson’s ratio, are computed using the Gaussian random field scheme in conjunction with the Halpin-Tsai micromechanical model. The governing equations of motion are derived from Von Kármán’s non-linear relations, utilizing both first-order shear deformation theory (FSDT) and modified higher-order shear deformation theory (MHSDT). These equations are subsequently solved using dynamic relaxation (DR) coupled with finite difference methods. To validate the results, comparisons with existing literature and finite element method (FEM) are conducted, ensuring the accuracy and reliability of the obtained solutions. A comprehensive parametric study is performed to investigate the influence of various factors, including boundary conditions, graphene distribution patterns, porosity variations, and the thickness-to-radius ratio, on the non-linear bending behavior of the composite plates.
Published Version
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