CHEBYSHEV PSEUDOSPECTRAL METHOD FOR DUFFING NONLINEAR DIFFERENTIAL EQUATIONS
DOI:
https://doi.org/10.51453/2354-1431/2022/839Keywords:
Duffing oscillator, Duffing equation, pseudospectral methods, Duffing system, Chebyshev points.Abstract
The system of Duffing nonlinear differential equations is often used in dynamics, which are known to describe many important oscillating phenomena in nonlinear engineering systems. This article presents the pseudospectral method to calculate numerical solutions for nonlinear Duffing differential equations on the interval [–1, 1]. This method is based on the differentiation matrix using the Chebyshev Gauss – Lobatto points. To find numerical solutions of the nonlinear Duffing differential equations, we have built an iterative procedure. The software used for the calculations in this study was Mathematica 10.4. The numerical results of the comparison show that this solution had a high degree of accuracy and very small errors.
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