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In this study, a calculation of the elastic mechanical properties of composite materials reinforced by boron nitride nanosheets is taking place, following the finite elements approach. Composites are specifically composed of two phases of materials, the matrix material and the reinforcing phase, here, consisting of boron nitride monolayers. The simulation of these two materials as well as the interface between them were made in accordance with the micromechanics theory, examining a representative volume element. Specifically, the matrix material is considered as continuous medium and the reinforcing phase, based on its atomistic microstructure, is considered as a discrete medium and was simulated through spring-based finite elements. Something similar occurred with the simulation of the interface region, which is responsible for the load transfer between the two materials. The results of the method were compared with data from other studies and showed good agreement.

Purpose The purpose of this paper is to implement a micromechanical hybrid finite element approach in order to investigate the stress transfer behavior of composites reinforced with hexagonal boron nitride (h-BN) nanosheets. Design/methodology/approach For the analysis of the problem, a three-dimensional representative volume element, consisting of three phases, has been used. The reinforcement is modeled discretely using spring elements of specific stiffness while the matrix material is modeled as a continuum medium using solid finite elements. The third phase, the intermediate one, known as the interface, has been simulated by appropriate stiffness variations which define a heterogeneous region affecting the stress transfer characteristics of the nanocomposite. Findings The results show a good agreement with corresponding ones from the literature and also the effect of a number of factors is indicated in stress transfer efficiency. Originality/value This is the first time that such a modeling is employed in the stress transfer examination of h-BN nanocomposites.