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Application of Extended Homotopy Analysis Method to the Two‐Degree‐of‐Freedom Coupled van der Pol‐Duffing Oscillator

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  • Y. H. Qian
  • S. M. Chen
  • L. Shen

Abstract

The extended homotopy analysis method (EHAM) is presented to establish the analytical approximate solutions for two‐degree‐of‐freedom (2‐DOF) coupled van der Pol‐Duffing oscillator. Meanwhile, the comparisons between the results of the EHAM and standard Runge‐Kutta numerical method are also presented. The results demonstrate that the analytical approximate solutions of the EHAM agree well with the numerical integration solutions. For EHAM as an analytical approximation method, we are not sure whether it can apply to all of the nonlinear systems; we can only verify its effectiveness through specific cases. As a result of the existence of nonlinear terms, we must study different types of systems, no matter from the complication of calculation and physical significance.

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Handle: RePEc:wly:jnlaaa:v:2014:y:2014:i:1:n:729184
DOI: 10.1155/2014/729184
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