In fiber reinforced composites (FRCs), microcracks often initiate at the interfacebetween fibers and the matrix, or from pores in the matrix. With an explicitmicrostructure representation, a peridynamic model can simulate the initiation,growth, and coalescence of intraply microcracks into macrocracks in the transverseloading of a FRC. The size of the simulated sample, in this case, is limited by thecomputational cost. For lamina-level simulations, we employ a homogenizationstrategy for the transversely loaded FRC with a peridynamic model, the IntermediatelyHomogenized Peridynamic (IH-PD) model for two-phase composites. We compareour results with three-point bending experiments from the literature. The results showthat the IH-PD model mimics the tortuous crack path observed experimentally,without having to rely on the detailed microstructure. Moreover, the IH-PD results forthe load versus crack opening displacement match very well the experimentallymeasured data.
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