Analytical Approximant to a Quadratically Damped Duffing Oscillator

The Duffing oscillator of a system with strong quadratic damping is considered. We give an elementary approximate analytical solution to this oscillator in terms of exponential and trigonometric functions. We compare the analytical approximant with the Runge–Kutta numerical solution. We also solve t...

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Main Author: Alvaro H. Salas S
Format: Article
Language:English
Published: Wiley 2022-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1155/2022/3131253
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author Alvaro H. Salas S
author_facet Alvaro H. Salas S
author_sort Alvaro H. Salas S
collection DOAJ
description The Duffing oscillator of a system with strong quadratic damping is considered. We give an elementary approximate analytical solution to this oscillator in terms of exponential and trigonometric functions. We compare the analytical approximant with the Runge–Kutta numerical solution. We also solve the oscillator by menas of He’s homotopy method and the famous Krylov–Bogoliubov–Mitropolsky method. The approximant allows estimating the points at which the solution crosses the horizontal axis.
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series The Scientific World Journal
spelling doaj-art-dd43d3aee1904b30acf9fba7b86b36182025-02-03T01:07:10ZengWileyThe Scientific World Journal1537-744X2022-01-01202210.1155/2022/3131253Analytical Approximant to a Quadratically Damped Duffing OscillatorAlvaro H. Salas S0Universidad Nacional de ColombiaThe Duffing oscillator of a system with strong quadratic damping is considered. We give an elementary approximate analytical solution to this oscillator in terms of exponential and trigonometric functions. We compare the analytical approximant with the Runge–Kutta numerical solution. We also solve the oscillator by menas of He’s homotopy method and the famous Krylov–Bogoliubov–Mitropolsky method. The approximant allows estimating the points at which the solution crosses the horizontal axis.http://dx.doi.org/10.1155/2022/3131253
spellingShingle Alvaro H. Salas S
Analytical Approximant to a Quadratically Damped Duffing Oscillator
The Scientific World Journal
title Analytical Approximant to a Quadratically Damped Duffing Oscillator
title_full Analytical Approximant to a Quadratically Damped Duffing Oscillator
title_fullStr Analytical Approximant to a Quadratically Damped Duffing Oscillator
title_full_unstemmed Analytical Approximant to a Quadratically Damped Duffing Oscillator
title_short Analytical Approximant to a Quadratically Damped Duffing Oscillator
title_sort analytical approximant to a quadratically damped duffing oscillator
url http://dx.doi.org/10.1155/2022/3131253
work_keys_str_mv AT alvarohsalass analyticalapproximanttoaquadraticallydampedduffingoscillator