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Abid, N.
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document
Discrete element models for the deformation and fracture of biological composites
Abstract
<p>We use the discrete element methodto capture the deformation and fracture behavior of staggeredcomposites with up to 10,000 inclusions. We find that in tension strainlocalization is accelerated by statistical variations in themicrostructure, but that this effect can be offset with strain hardeningat the interfaces. We also measure the fracture toughness of thismicrostructure using a notched compact tension geometry and J-integrals.The fracture model captures the effects of bridging, inelastic processzone, statistics and hardening on the crack resistance curve. Thesefindings provide a better understanding of the mechanics of naturalcomposites, and can serve as guidelines for the design of bio-inspiredmaterials</p>