Biography
Prof. M. M. Aghdam
Prof. M. M. Aghdam
Amirkabir University of Technology, Iran
Title: Recent advances in functionally graded composite micro/nano-structures
Abstract: 
A new size-dependent inhomogeneous plate model is constructed to analyze the nonlinear buckling and postbuckling characteristics of multilayer functionally graded composite nanoplates reinforced with graphene platelet (GPL) nanofillers under axial compressive load. To this purpose, nonlocal strain gradient theory of elasticity is implemented into a refined hyperbolic shear deformation plate theory. The mechanical properties of multilayer graphene platelet-reinforced composite (GPLRC) nanoplates are evaluated based upon Halpin-Tsai micromechanical scheme. The weight fraction of randomly dispersed GPLs remains constant in each individual layer which results in U-GPLRC nanoplate, or changes layerwise in accordance with three different functionally graded patterns which make X-GPLRC, O-GPLRC and A-GPLRC nanoplates. Via a two-stepped perturbation technique, explicit analytical expressions for nonlocal strain gradient stability paths are established for layerwise functionally graded GPLRC nanoplates. It is demonstrated that both the nonlocal and strain gradient size dependencies are more significant for multilayer GPLRC nanoplates filling by GPL nanofillers with higher length to thickness and width to thickness ratios.