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An Optimal Iteration Method for Strongly Nonlinear Oscillators

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  • Vasile Marinca
  • Nicolae Herişanu

Abstract

We introduce a new method, namely, the Optimal Iteration Perturbation Method (OIPM), to solve nonlinear differential equations of oscillators with cubic and harmonic restoring force. We illustrate that OIPM is very effective and convenient and does not require linearization or small perturbation. Contrary to conventional methods, in OIPM, only one iteration leads to high accuracy of the solutions. The main advantage of this approach consists in that it provides a convenient way to control the convergence of approximate solutions in a very rigorous way and allows adjustment of convergence regions where necessary. A very good agreement was found between approximate and numerical solutions, which prove that OIPM is very efficient and accurate.

Suggested Citation

  • Vasile Marinca & Nicolae Herişanu, 2012. "An Optimal Iteration Method for Strongly Nonlinear Oscillators," Journal of Applied Mathematics, Hindawi, vol. 2012, pages 1-11, January.
    • Handle: RePEc:hin:jnljam:906341
    DOI: 10.1155/2012/906341
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