Jam, Amir NamazianAmir NamazianJamJam, Negin NamazianNegin NamazianJamIzadifar, MohammadrezaMohammadrezaIzadifarRabczuk, TimonTimonRabczuk2022-03-062022-03-062022https://publica.fraunhofer.de/handle/publica/27129310.1016/j.commatsci.2021.111066In this paper, we carried out molecular dynamic (MD) simulations to study the crack growth and its effects on the mechanical properties of carbon doped polycrystalline boron-nitride nanosheets. We also quantified the influence of the grain and crack size on the mechanical responses. Therefore, models of polycrystalline carbon-doped h-BN with primary center crack are tested. In the models with bigger cracks, we observe a linear hardening until fracture occurs completely. Furthermore, the crack propagation speed during the fracture process is measured.encarbon doped polycrystalline h-BNmolecular dynamicmechanical propertiesinitial cracktime stepgrain sizefracture behaviourcrack speedcrack size621620671journal article