Ballistic response of hexagonal boron nitride monolayer under impact of a nano-projectile

H Tian and B Zhang and QM Li, MECHANICS OF MATERIALS, 133, 1-12 (2019).

DOI: 10.1016/j.mechmat.2019.03.003

The response of a hexagonal boron nitride (h-BN) monolayer subjected to ballistic impact is studied using an explicit finite element (FE) model based on molecular structural mechanics where B-N bonds are represented by the nonlinear Timoshenko beam elements. The elastic properties and bond strength of h-BN monolayer and graphene are verified by nano- indentation using FE and molecular dynamics simulations. It shows that the ballistic response of h-BN monolayer is dependent of the impact speed of the projectile. The stress and deformation wave propagations in the h-BN monolayer interact with the movement of projectile and the material bond failure, which, in turn, influence the ballistic performance of the h-BN monolayer target. It shows that h-BN material, in comparison with conventional armor materials, has potential to increase the ballistic performance significantly if it could be practically made for armor application.

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