Non-Linear Blast-Induced Dynamic Responses of Graphene Platelets-Reinforced Porous Cylindrical Panels in Thermal Environments

This paper is the first attempt, to the best of the authors’ knowledge, to examine the non-linear blast-induced dynamic responses of functionally graded graphene platelets-reinforced composite (FG-GPLRC) porous cylindrical panels in thermal environments.

The mechanical properties of porous FG-GPLRC, including the modulus of elasticity, mass density, coefficients of thermal expansion, and Poisson’s ratio, are determined by using the Halpin–Tsai micromechanical model, the extended rule of mixtures, and the open-cell metal foam model. The first-order shear deformation theory, the von Kármán geometric non-linearity, and the standard Lagrange equations are applied to derive the equations governing the motion the FG-GPLRC porous cylindrical panels. Navier’s solution is used to model the immovable and simply supported boundary conditions of the cylindrical panels. The Newmark-β scheme for direct integration and the Newton–Raphson iterative technique were used to obtain the non-linear dynamic responses of the FG-GPLRC porous cylindrical panels when they were subjected to various blast-induced loads in a thermal environment.

A parametric study is performed and indicates that the dependence of the properties of the material on the temperature influenced both the matrix and the GPLs, and thus had a significant influence on the non-linear dynamic responses of the structure. Enhanced structural performance can be achieved by either dispersing more GPLs, or introducing denser pores near the upper and lower surfaces of the structure.