Mechanical characterization of hexagonal boron nitride nanocomposites: A multiscale finite element prediction

Abstract

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.

Tensile and flexural properties of MWCNT-COOH and hBN integrated polyamide 66/short glass fiber composites

“…Mortazavi and Cuniberti [60] calculated the elastic modulus and tensile strength of pristine hBN films as 800-850 GPa and 150±15 GPa, respectively. Similar results regarding the mechanical properties of hBN were also presented by several authors in literature [61][62][63][64]. In addition, Joy et al [65] provided an overall review on boron nitride based polymer nanocomposites.…”

“…Nanofillers such as nanoparticles and nanoplatelets could alter the direction of crack propagation and thereby stop the crack propagation and crack pinning along the original direction [66], which improves the mechanical performance of the composite system. According to the computational study of Spanos and Anifantis [62], even small volume fractions of boron nitride nano sheet (BNNS) can significantly contribute to the reinforcement of matrix material. The authors pointed out that sufficient interface, matrix stiffness and BNNS size and volume fraction are the critical parameters determining the elastic mechanical properties of BNNS-based nanocomposites.…”

Mechanical and tribological properties of nanocomposites incorporated with two-dimensional materials

“…Based on these relevant equations, simulation methods, such as finite element models [57,58], molecular dynamics [59][60][61][62], and 3D computational models [63], are developed into effective routes for predicting the mechanical properties of 2DNBCs, as displayed in Fig. 4.…”