Effect of temperature variations on the stability mechanism of the confined functionally graded porous arch with nanocomposites reinforcement under mechanical loading

This paper presents the effect of temperature variation on the stability behavior of the confine functionally graded porous (FGP) arch reinforced by nanocomposites, which is represented by the graphene platelets (GPLs). Both the pores and the GPLs are distributed symmetrically to the mid-axis in the thickness direction of the cross-section. An analytical prediction is derived to express the quantitative effect of the temperature variation on the pressure capacity of the confined FGP-GPLs arch. Subsequently, numerical verification is taken successfully by comparing the numerical and analytical pressure capacity, as well as the equilibrium paths. In addition, the confinement effect is quantized by comparing the pressure capacity between the confined and unconfined arches. Finally, the effects of several parameters on the pressure capacity are analyzed parametrically. These parameters are: temperature variation, porosity coefficient, weight fraction and geometric shape of the nanocomposites, the central angle of the arch, interface friction between the arch and medium, Young's modulus of the medium.