Application of a generalized Senator-Bapat perturbation technique to nonlinear dynamical systems with an irrational restoring force

Siu Kai Lai, Y. Xiang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)


This paper presents an alternative approach for mathematical modeling of an oscillating system with an irrational restoring force. Such a model corresponds to the oscillation of an elastic wire or string. A generalized Senator-Bapat perturbation technique is employed to deal with this nonlinear system. Unlike the conventional perturbation method, it not only solves the nonlinear problem without the requirement of small parameters, but also provides highly accurate solutions for small as well as large amplitudes of motion. Illustrative examples are selected and demonstrated for verifying the accuracy of this approach.
Original languageEnglish
Pages (from-to)2078-2086
Number of pages9
JournalComputers and Mathematics with Applications
Issue number7
Publication statusPublished - 1 Oct 2010
Externally publishedYes


  • Generalized perturbation method
  • Irrational restoring force
  • Nonlinear system

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Modelling and Simulation
  • Computational Mathematics

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