Φ-ecuación de Tricomi

Main Article Content

Diego A. Castro G.
Alexander Gutiérrez G. http://orcid.org/0000-0002-7228-8168

Keywords

Soluciones periódicas, atractores, estabilidad

Resumen

Se estudia una ecuación diferencial no lineal autónoma que modela el movimiento de un Φ-péndulo amortiguado con forzamiento constante. En el caso disipativo se presentan dos resultados, por un lado, usando la aplicación de Poincaré y funciones de energía, se establece un criterio suficiente para determinar la existencia, unicidad y estabilidad asintótica de una solución periódica de segunda clase y por otro lado, se presenta un criterio con el que se estima analíticamente la cuenca de atracción de un equilibrio asintóticamente estable con ayuda del principio de invarianza de Lasalle. Mientras que en el caso conservativo se dan condiciones necesarias para que la imagen de la función periodo esté definida en un intervalo no acotado. Los resultados obtenidos en el caso disipativo son una generalización de los establecidos por Tricomi en el caso newtoniano.

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