Abstract
A rhombic four-atom unit cell corresponding to a close-packed atomic layer is considered, The interatomic forces in the cell are defined by the Morse and Lennard-Jones potentials for large strains. The stability region of the cell is constructed as a function of two parameters that model tension-compression along the major diagonal of the cell and shear. For each point in the stability region, equilibrium states of the cell are determined numerically; at least one of these states is stable. It is shown that for the close-packed atomic layer under combined compression-shear loading, Poisson’s ratio needs to be taken into account.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 48, No. 1, pp. 161–172, January–February, 2007.
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Astapov, N.S., Kornev, V.M. Stability region of a close-packed layer of atoms. J Appl Mech Tech Phys 48, 135–144 (2007). https://doi.org/10.1007/s10808-007-0018-7
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DOI: https://doi.org/10.1007/s10808-007-0018-7