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Molecular dynamics simulation of perforation of graphene under impact by fullerene projectiles
Materials Today Communications, Volume: 31, Start page: 103642
Swansea University Author: Adesola Ademiloye
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In this paper, molecular dynamics (MD) simulations are employed to study the perforation of graphene under impact by fullerenes of various sizes. The buckling characteristics of fullerenes after impact are classified and discussed. The relative state of C180 projectile and graphene under impact at d...
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In this paper, molecular dynamics (MD) simulations are employed to study the perforation of graphene under impact by fullerenes of various sizes. The buckling characteristics of fullerenes after impact are classified and discussed. The relative state of C180 projectile and graphene under impact at different velocities is also investigated. We observed that the C180 projectile rebounds at low velocity (V < 4.25 km/s), sticks to graphene at high velocity (4.25 km/s ≤ V ≤ 4.75 km/s), and perforates the graphene at higher velocity (V ≥ 4.75 km/s). It is found that the buckled cap of large-size fullerene formed after impact can better absorb kinetic energy. In addition, different crack modes of graphene after perforation were investigated. The effect of fullerene projectile size and initial velocity on ballistic limit velocity was also clarified. This study provides new implications for the application of large-size fullerenes as impact shields.
Molecular dynamics, Perforation, Fullerene projectile, Buckling characteristics, Ballistic limit velocity, Impact protection
College of Engineering
This work was supported in part by National Natural Science Foundation of China under Grant No. 11902159 and No. 61903269, Swansea University New Faculty Grant, and the Hong Kong Scholars Program (Project No. XJ2019016).