Abstract
Advances in 3D printing have enabled fabrication of rationally-designed cellular architectures out of fiber-reinforced composites, offering a new class of low-density high-performance materials with multifunctional properties unattainable with either of their constituent composites or the underlying cellular architectures. In this study, efficacy of the hierarchical material design approach is investigated by creating various periodic fiber-reinforced representative cells and evaluating effects of fiber volume fraction , fiber length , fiber orientation, and cell topology on their effective thermo-mechanical properties using multiscale standard mechanics homogenization with periodic boundary conditions. The incorporated approach is finally corroborated by comparing the numerical and experimental data for the Young's moduli of cellular metamaterials with tunable isotropic/anisotropic thermo-mechanical properties, 3D printed out of pure and carbon-fiber-reinforced PETG polymer.
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