TY - JOUR
T1 - A multiscale approach for the nonlinear mechanical response of 3-phases fiber reinforced graphene nanoplatelets polymer composite materials
AU - Azoti, Wiyao
AU - Elmarakbi, Ahmed
PY - 2019/7/1
Y1 - 2019/7/1
N2 - 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.
AB - 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.
KW - 3-phases composite
KW - ductile damage
KW - graphene nanoplatelets
KW - interface
KW - micromechanics
UR - http://www.scopus.com/inward/record.url?scp=85066135890&partnerID=8YFLogxK
U2 - 10.1002/mats.201900011
DO - 10.1002/mats.201900011
M3 - Article
VL - 28
JO - Macromolecular Theory and Simulations
JF - Macromolecular Theory and Simulations
SN - 1022-1344
IS - 4
M1 - 1900011
ER -