He's parameter-expanding methods for strongly nonlinear oscillators
Journal of Computational and Applied Mathematics
Solutions of non-linear oscillators by the modified differential transform method
Computers & Mathematics with Applications
Computers & Mathematics with Applications
Computers & Mathematics with Applications
Application of the modified frequency formulation to a nonlinear oscillator
Computers & Mathematics with Applications
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In this paper we propose a reliable algorithm for the solution of nonlinear oscillators. Our algorithm is based upon the homotopy perturbation method (HPM), Laplace transforms, and Pade approximants. This modified homotopy perturbation method (MHPM) utilizes an alternative framework to capture the periodic behavior of the solution, which is characteristic of oscillator equations, and to give a good approximation to the true solution in a very large region. The current results are compared with those derived from the established Runge-Kutta method in order to verify the accuracy of the MHPM. It is shown that there is excellent agreement between the two sets of results. Results also show that the numerical scheme is very effective and convenient for solving strongly nonlinear oscillators.