Multiscale modeling of fracture in fiber-reinforced composites

摘要: Abstract The fracture behavior of a fiber-reinforced composite beam in the presence notch perpendicular to fibers is simulated by means multiscale model based on an embedded cell approach three dimensions. representation material front tip – where damage concentrated included actual fiber/matrix topology composite, while rest was represented linear thermoelastic, transversally isotropic homogeneous solid. and micromechanisms which control onset (namely, plastic deformation matrix, brittle fiber frictional sliding) were different phases interfaces, corresponding micromechanical parameters governing their independently measured. mechanical response beams three-point bending computed using finite element method, simulation results good agreement with experimental data at both microscopic macroscopic level, demonstrating potential this simulate complex, heterogeneous materials. Finally, further applications these are briefly noted.