Peridynamic model for microballistic perforation of multilayer graphene

The peridynamic theory of solid mechanics is applied to the continuum modeling of the impact of small, highvelocity silica spheres on multilayer graphene targets. The model treats the laminate as a brittle elastic membrane. The material model includes separate failure criteria for the initial rupture of the membrane and for propagating cracks. Material variability is incorporated by assigning random variations in elastic properties within Voronoi cells. The computational model is shown to reproduce the primary aspects of the response observed in experiments, including the growth of a family of radial cracks from the point of impact.

Automated summary

The peridynamic theory of solid mechanics is used to model the impact of small, high-velocity silica spheres on multilayer graphene targets. The model treats the laminate as a brittle elastic membrane and incorporates material variability by assigning random variations in elastic properties within Voronoi cells. The computational model successfully reproduces key aspects observed in experiments, such as the growth of radial cracks from the impact point.