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https://open.uns.ac.rs/handle/123456789/8645
Title: | About a class of nonlinear oscillators with amplitude-independent frequency | Authors: | Kovačić, Ivana Rand R. |
Issue Date: | 1-Oct-2013 | Journal: | Nonlinear Dynamics | Abstract: | This work is concerned with nonlinear oscillators that have a fixed, amplitude-independent frequency. This characteristic, known as isochronicity/isochrony, is achieved by establishing the equivalence between the Lagrangian of the simple harmonic oscillator and the Lagrangian of conservative oscillators with a position-dependent coefficient of the kinetic energy, which can stem from their mass that changes with the displacement or the geometry of motion. Conditions under which such systems have an isochronous center in the origin are discussed. General expressions for the potential energy, equation of motion as well as solutions for a phase trajectory and time response are provided. A few illustrative examples accompanied with numerical verifications are also presented. © 2013 Springer Science+Business Media Dordrecht. | URI: | https://open.uns.ac.rs/handle/123456789/8645 | ISSN: | 0924090X | DOI: | 10.1007/s11071-013-0982-9 |
Appears in Collections: | FTN Publikacije/Publications |
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