The mechanical behavior of a class of systems containing both carbon nanotubes and graphene planes is modeled. Such a class of composites expands the scope of application of nanocomposites and hierarchical systems based on nanotubes by combining them with various allotropic forms of carbon. Within the framework of a discrete-continuum approach a model of a layered system as a set of arrays of single-walled carbon nanotubes separated by graphene planes is constructed. In numerical experiments the estimates of effective elastic moduli for the constructed model are obtained.
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