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Descripción

Closed-form exact solutions for an oscillator with anti-symmetric quadratic nonlinearity are derived from the first integral of the nonlinear differential equation governing the behaviour of this oscillator. The mathematical model is an ordinary second order differential equation in which the sign of the quadratic nonlinear term changes. Two parameters characterize this oscillator: the coefficient of the linear term and the coefficient of the quadratic term. Not only the common case in which both coefficients are positive but also all possible combinations of positive and negative signs of these coefficients which provide periodic motions are considered, giving rise to four different cases. Three different periods and solutions are obtained, since the same result is valid in two of these cases. An interesting feature is that oscillatory motions whose equilibrium points are not at x = 0 are also considered. The periods are given in terms of an incomplete or complete elliptic integral of the first kind, and the exact solutions are expressed as functions including Jacobi elliptic cosine or sine functions.

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RUA  

Autor(es)

Beléndez, Augusto -  Martínez Guardiola, Francisco Javier -  Beléndez Vázquez, Tarsicio -  Pascual, Carolina -  Alvarez, Mariela L. -  Gimeno, Encarnación -  Arribas Garde, Enrique - 

Id.: 71083012

Idioma: eng  - 

Versión: 1.0

Estado: Final

Palabras claveDynamical systems - 

Tipo de recurso: info:eu-repo/semantics/article  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: © Indian Association for the Cultivation of Science 2017

Requerimientos técnicos:  Browser: Any - 

Relación: [References] https://doi.org/10.1007/s12648-017-1125-9

Fecha de contribución: 16-mar-2018

Contacto:

Localización:
* Beléndez, A., Martínez, F.J., Beléndez, T. et al. Indian J Phys (2018) 92: 495. https://doi.org/10.1007/s12648-017-1125-9
* 0973-1458 (Print)
* 0974-9845 (Online)
* 10.1007/s12648-017-1125-9

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