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Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp'yuternye Nauki, 2021, Volume 31, Issue 1, Pages 35–49
DOI: https://doi.org/10.35634/vm210103
(Mi vuu753)
 

MATHEMATICS

On two-frequency quasi-periodic perturbations of systems close to two-dimensional Hamiltonian ones with a double limit cycle

O. S. Kostromina

Department of Differential Equations, Mathematical and Numerical Analysis, Lobachevsky State University of Nizhny Novgorod, pr. Gagarina, 23, Nizhny Novgorod, 603950, Russia
References:
Abstract: The problem of the effect of two-frequency quasi-periodic perturbations on systems close to arbitrary nonlinear two-dimensional Hamiltonian ones is studied in the case when the corresponding perturbed autonomous systems have a double limit cycle. Its solution is important both for the theory of synchronization of nonlinear oscillations and for the theory of bifurcations of dynamical systems. In the case of commensurability of the natural frequency of the unperturbed system with frequencies of quasi-periodic perturbation, resonance occurs. Averaged systems are derived that make it possible to ascertain the structure of the resonance zone, that is, to describe the behavior of solutions in the neighborhood of individual resonance levels. The study of these systems allows determining possible bifurcations arising when the resonance level deviates from the level of the unperturbed system, which generates a double limit cycle in a perturbed autonomous system. The theoretical results obtained are applied in the study of a two-frequency quasi-periodic perturbed pendulum-type equation and are illustrated by numerical computations.
Keywords: quasi-periodic perturbations, double limit cycle, resonances, averaged systems.
Funding agency Grant number
Russian Foundation for Basic Research 18-01-00306_а
Russian Science Foundation 19-11-00280
Ministry of Science and Higher Education of the Russian Federation 0729-2020-0036
The research was supported by the Russian Foundation for Basic Research (project no. 18-01-00306), the Russian Science Foundation (project no. 19-11-00280), and the Ministry of Science and Higher Education of Russian Federation under grant no. 0729-2020-0036.
Received: 25.10.2020
Bibliographic databases:
Document Type: Article
UDC: 517.925.42
MSC: 34C15
Language: English
Citation: O. S. Kostromina, “On two-frequency quasi-periodic perturbations of systems close to two-dimensional Hamiltonian ones with a double limit cycle”, Vestn. Udmurtsk. Univ. Mat. Mekh. Komp. Nauki, 31:1 (2021), 35–49
Citation in format AMSBIB
\Bibitem{Kos21}
\by O.~S.~Kostromina
\paper On two-frequency quasi-periodic perturbations of systems close to two-dimensional Hamiltonian ones with a double limit cycle
\jour Vestn. Udmurtsk. Univ. Mat. Mekh. Komp. Nauki
\yr 2021
\vol 31
\issue 1
\pages 35--49
\mathnet{http://mi.mathnet.ru/vuu753}
\crossref{https://doi.org/10.35634/vm210103}
\isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=000640022000003}
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    Вестник Удмуртского университета. Математика. Механика. Компьютерные науки
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