Modeling and Evaluation of Effective Elastic Properties of Carbon Nanotubes Reinforced Carbon Fiber/Epoxy Multiscale Composites

Mechanical behaviour of carbon nanotube composites: A review of various modelling techniques

“…In another multiscale approach, the 3-phase composite was analysed using micromechanical and FEM methods. 211 The CNT/fibre/polymer matrix composite was analysed using the HT model for CNT and matrix at the nano level. The properties obtained for the nanocomposite were then used in the fibre micromechanics model, treating the nanocomposite as the matrix for the fibre micromechanics model, and further numerical simulations were done in FEM.…”

“…Bacciocchi 233 analysed buckling loads in a 3-phase composite of CNT, polymer, and fibre addressing the influence of non-uniform distribution of fibres along the thickness on the critical buckling load. Power law function was used to define the nonuniform features, which were shown to have a significant D-0.8-15nm,L-10nm-30 µm FEM 0.9-250GPa 49,56,76,161,165,173,176,180,188,190,194,200,204,205,211,215,218,219,222,223,255,258,259,262 D-0.9-30nm,L-12.19nm-30µm, RVE scale-5-110 µm Multiscale 1-225GPa 120,161,165,188,190,200,205,207,212,215,218,219,222,223,257 impact on the buckling response of laminated flat panels. Tsai et al 234 analysed the effect of CNT buckling on CNT reinforced copper matrix composite by characterizing the composite using high-resolution transmission electron microscopy and further analysis based on MD simulations.…”

Carbon nanotubes in carbon/epoxy multiscale textile preform composites: A review

“…However, the elastic modulus of the composite with randomly oriented fillers ( E C ) can be calculated using the following equation [ 226 ] : where, E L is the tensile moduli in the longitudinal direction, E T is the tensile moduli in the transverse direction, E m and E r are the elastic moduli of the matrix and reinforcement, respectively, l is the length of the reinforcement, r is the radius of the fibrous reinforcement, t is the thickness of the reinforcement, V f is the fiber volume fraction, E C is the elastic modulus of randomly oriented filler composite, a is the 0.375 for 2D, and a is the 0.184 for 3D dispersion of the fibrous reinforcements. [ 227,228 ]…”

“…It was found that amount of CNTs and their position in the representative volume elements in the composite was significant. [ 233‐235 ] Reddy et al [ 226 ] used the Halpin‐Tsai model and fiber micromechanics model to analyze the epoxy/MWCNTs nanocomposites and carbon fibers/Epoxy/MWCNTs multiscale composites. They conducted the numerical simulation on both nano and micro composites using FEM to evaluate the effective elastic composite properties.…”