Numerical evaluation of the strength of graphene-reinforced metal matrix composites

Resumo

This work evaluates the overall strength of graphene-reinforced metal matrix composites employing a
computational homogenization procedure. The simulations are carried out using the finite element method and
are based on unit cells representing an aggregate composed of a metallic matrix, obeying the von Mises criterion,
which is reinforced with high strength and stiff plane inclusions mimicking graphene. Uniaxial displacement
boundary conditions are imposed. The macroscopic stress components are calculated from the reaction force
obtained from the simulations and assumed to be the mean stress component in that direction after reaching an
asymptotic response. The study considers different volume fractions and orientations of the reinforcement, thus
addressing the effects of such material features on the macroscopic yield behavior.