Abstract
A previously developed strongly nonlinear continuum model for diatomic crystals is examined using continuum limit of a discrete diatomic model. It suggested suitable expression for the forces in the discrete model; however, its continuum limit not only explains the nonlinear terms continuum model but also gives rise to some additional terms. It turns out that one of them supports bell-shaped localized variations in the diatomic material but suppresses kink-shaped variations.
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Porubov, A. Modeling of strongly nonlinear effects in diatomic lattices. Arch Appl Mech 84, 1533–1538 (2014). https://doi.org/10.1007/s00419-014-0859-5
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DOI: https://doi.org/10.1007/s00419-014-0859-5