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Elastic and Inelastic Behavior of Boron Nitride Nanocones at Finite Strains by Seyed Saeed Taheri; Mir Masoud Seyyed Fakhrabadi is a Physics and Astronomy article available to read on EtoBox.

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This research is carried out to characterize the mechanical behavior of boron nitride nanocones (BNNCs) via molecular dynamics (MD) simulations using the Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS). The calculations of atomic interactions are performed based on the Tersoff-type potential function. The five elastic moduli are determined by applying four mechanical loadings i. e. uniaxial stretching, axial twist, plane-strain biaxial tension, and in-plane shear. It is found that all elastic constants depend on the apex angle of BNNCs, whereas wider ones have lower Young's and longitudinal shear moduli. In contrast, as the apex angle of the nanocones increases, their plane-strain bulk moduli and in-plane shear constants increase. In addition, Poisson's ratio decreases with an increase in the apex angle and length of the BNNCs. Moreover, the shorter and sharper BNNCs, the higher values of strain at which they fail under uniaxial tensile and axial twist loadings.

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Author

Seyed Saeed Taheri; Mir Masoud Seyyed Fakhrabadi

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Physics and Astronomy (Physical Sciences)