Nonlinear vector waves of a flexural mode in a chain model of atomic particles
Article
Article Title | Nonlinear vector waves of a flexural mode in a chain model of atomic particles |
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ERA Journal ID | 100 |
Article Category | Article |
Authors | Nikitenkova, S. P. (Author), Raj, N. (Author) and Stepanyants, Y. A. (Author) |
Journal Title | Communications in Nonlinear Science and Numerical Simulation |
Journal Citation | 20 (3), pp. 731-742 |
Number of Pages | 12 |
Year | 2015 |
Place of Publication | Amsterdam, Netherlands |
ISSN | 1007-5704 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.cnsns.2014.05.031 |
Abstract | Flexural transverse waves in an anharmonic chain of atoms is considered and the nonlinear vector equation for the phonon modes in the long-wave approximation is derived taking into account the weak dispersion effects. Particular cases of the equation derived are discussed; among them the vector mKdV equation (Gorbacheva & Ostrovsky, 1983), as well as the new model vector equations dubbed here the 'second order cubic Benjamin–Ono (socBO) equation' and 'nonlinear pseudo-diffusion equation'. Stationary solutions to the equation derived are studied and it is found in which cases physically reasonable periodic and solitary type solutions may exist. The simplest non-stationary interactions of solitary waves of different polarisation are studied by means of numerical simulation. A new interesting phenomenon is revealed when two solitons of the same or opposite polarities interact elastically, whereas the interaction of two solitons lying initially in the perpendicular planes is essentially inelastic resulting in the survival of only one soliton and destruction of another one. |
Keywords | chain model; particle interaction; nonlinear wave; kink; flexural mode; vector equation; mKdV equation; soliton interaction; stationary solution |
ANZSRC Field of Research 2020 | 490303. Numerical solution of differential and integral equations |
490109. Theoretical and applied mechanics | |
510301. Acoustics and acoustical devices; waves | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Lobachevsky University, Russia |
School of Agricultural, Computational and Environmental Sciences | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q29v7/nonlinear-vector-waves-of-a-flexural-mode-in-a-chain-model-of-atomic-particles
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