期刊
MECHANICS OF MATERIALS
卷 133, 期 -, 页码 1-12出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mechmat.2019.03.003
关键词
H-BN monolayer; Nano-projectile impact; Dynamic responses; Ballistic limit; Energy dissipation
资金
- NSFC [11872202]
- Natural Science Foundation of Jiangsu Province [BK20161483]
- Aeronautical Science Foundation [2016ZF52063]
- Foundations of State Key Laboratory of Mechanics and Control of Mechanical Structures (NUAA) [MCMS-0216G01, MCMS-0217K01]
- Qin Lan Project of Jiangsu province
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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