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Modeling anisotropic fracture in a metal-fiber reinforced composite system
Author(s) -
Dhaladhuli Pranavi,
Amirtham Rajagopal
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1166/1/012023
Subject(s) - materials science , composite material , composite number , anisotropy , fracture (geology) , stiffness , fiber pull out , isotropy , fiber , delamination (geology) , fiber reinforced composite , parametric statistics , matrix (chemical analysis) , composite laminates , paleontology , statistics , physics , mathematics , quantum mechanics , biology , subduction , tectonics
Hybrid structures consisting of metal and composites can be applied to specific requirements of different applications. The computational modeling of composites is quite complex compared to homogeneous and isotropic materials like metals because of the heterogeneity introduced due to the presence of different phases such as matrix, fiber and matrix-fiber interface, and anisotropy due to the fiber alignment. The crack propagation in a composite material depends on a combination of various damage modes, namely, fiber pull-out, matrix cracking, delamination. The strength and stiffness of the composite depend on the mechanical and fracture properties of the individual phases, and the fiber inclination. The metal-composite interface is modeled using the cohesive zone approach. A nonlocal diffused approach is proposed to model the anisotropic failure in composites reinforced with unidirectional and woven fibers and the interaction of the crack with the interface. Parametric studies are conducted to understand the role of fiber orientation and interface fracture properties of the system. The proposed model is illustrated through numerical examples to understand various failure mechanisms in a metal-composite system.

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