Compressive failure of composites: A computational homogenization approach

Abstract : This paper revisits the modeling of compressive failure of long fiber composite materials by considering a multiscale finite element approach. It is well known that this failure follows from a fiber microbuckling phenomenon. Fiber microbuckling is governed by both material and geometrical quantities: the elastoplastic shear behavior of the matrix and the fiber misalignment. Although all these parameters are easily accounted by a finite element analysis at the local level, the failure is also influenced by macrostructural quantities. That is why a multilevel finite element model (FE²) is relevant to describe the compressive failure of composite. Furthermore, fiber local buckling leads to a loss of ellipticity of the macroscopic model, which can be a criterion of failure.
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Saeid Nezamabadi, Michel Potier-Ferry, Hamid Zahrouni, Julien Yvonnet. Compressive failure of composites: A computational homogenization approach. Composite Structures, Elsevier, 2015, 127, pp.60-68. ⟨10.1016/j.compstruct.2015.02.042⟩. ⟨hal-01134132⟩

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