▎ 摘　　要

This work presents an analytical approach for solving the nonlinear mechanical response of hybrid glass fibers reinforced graphene polymer composite materials. Two-scale homogenization technique derives the effective properties of the composite. At the first scale, the properties of a 2-phases graphene/polymer composite are obtained by accounting for the J2 plasticity coupled with the "Lemaitre-Chaboche" ductile damage model. An interfacial imperfection between the fillers and the matrix is considered through the linear spring model (LSM). At the second scale, the modeling of the 3-phases glass fibers/graphene/polymer composite combines the 2-phases composite as a matrix phase in which are embedded the glass fibers. For both scales, a modified Mori-Tanaka scheme derives the effective properties. Numerical results, obtained for a thermoplastic PA6 matrix, are compared with the multistep method of Digimat software. Finally, a tension-torsion test shows that the imperfection at the fibers/polymer interface is the driven parameter to weaken mechanical responses in the shear direction.