Peridynamic Simulation of Fracture in Polycrystalline Graphene

Defect-free graphene is believed to be the strongest material. However, effective strength of engineering used large-area in which defects are inevitable actually determined by fracture toughness, rather than intrinsic that governs breakage atomic bonds perfect graphene. Due limitations commonly adopted experiments, conventional continuum mechanics–based methods and fully atomistic simulations, polycrystalline under uniaxial tensile load explored performing peridynamic (PD) simulations this paper. The strength, strain, toughness graphene, as well grain size effect temperature on such quantities, studied work. results show follows an inverse pseudo Hall–Petch relation. strain decrease with a size. Increasing can also weaken properties provide guidelines for applications nano devices. This study expands application peridynamics presents new way