Nonlinear Dynamic Response of FG Graphene Platelets Reinforced Composite Beam with Edge Cracks in Thermal Environment

Abstract

This paper presents a numerical investigation on the nonlinear dynamic response of multilayer functionally graded graphene platelets reinforced composite (FG-GPLRC) beam with open edge cracks in thermal environment. It is assumed that graphene platelets (GPLs) in each GPLRC layer are uniformly distributed and randomly oriented with its concentration varying layer-wise along the thickness direction. The effective material properties of each GPLRC layer are predicted by Halpin-Tsai micromechanics-based model. Finite element method is employed to calculate the dynamic response of the cracked FG-GPLRC beam. It is found that the maximum dynamic deformation of the cracked FG-GPLRC beam under dynamic loading is quite sensitive to the crack location and grows with an increase in the crack depth ratio (CDR) and temperature rise. The influences of GPL distribution, concentration, geometry as well as the boundary conditions on the dynamic response characteristics of cracked FG-X-GPLRC beams are also investigated comprehensively.

Dynamic buckling of rotationally restrained FG porous arches reinforced with graphene nanoplatelets under a uniform step load

“…Fan et al [21][22][23] conducted a series of studies on the buckling, thermal postbuckling, and nonlinear oscillations of porous FG micro/nanoplates via a non-uniform rational B-spline formulation. Concurrent to the above studies, incorporating graphene nanoplatelets (GPLs) into matrix materials has recently been proven to be a highly effective way to enhance the mechanical performance of composite structures [24][25][26][27]. Rafiee et al [28,29] experimentally found that the Young' modulus, tensile strength and fracture toughness of nanocomposites can be remarkably improved by adding a small amount of GPLs, and the reinforcing effect is much better than using CNTs as reinforcing nanofillers.…”

Nonlinear Buckling of Fixed Functionally Graded Material Arches Under a Locally Uniformly Distributed Radial Load

“…(Moita et al, 2018) studied the discrete model of the structural by the theory of high order shear deformation, and the finite element formulation is carried out to meet general FGM plate-shell type structures. (Yang et al, 2020a;Yang et al, 2020b;Yang et al, 2020c;Yang et al, 2021a;Yang et al, 2021b) have published a series of papers on in-plane buckling and free vibrations of functionally graded composite arches with graphene reinforcements. However, FGM arches may be subjected to a locally radial load and have different material distributions leading to different nonlinear in-plane buckling behavior.…”

Analytical Prediction for Nonlinear Buckling of Elastically Supported FG-GPLRC Arches under a Central Point Load

“…By introducing GPLs to FGM materials, novel FG GPLs-reinforced composite (FG-GPLRC) structures have been developed recently and have since attracted extensive attention in both research and engineering communities [24]. Yang and his co-workers conducted pioneering studies on the mechanical behaviors of FG-GPLRC structures, such as beams [25][26][27][28], shells [29,30], and plates [31,32]. Focusing on the stability analysis of FG-GPLRC arches, the authors devoted extensive efforts to the investigation of such structures, including the characteristics of nonlinear static buckling, dynamic buckling, and free vibration for FG-GPLRC arches with different boundary conditions and external loads [33][34][35][36][37][38][39].…”