Structural Engineering and Mechanics

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Vibration analysis of high nonlinear oscillators using accurate approximate methods

  • Pakar, I. (Department of Civil Engineering, Mashhad Branch, Islamic Azad University) ;
  • Bayat, M. (Department of Civil Engineering, Mashhad Branch, Islamic Azad University)
  • Received : 2012.09.12
  • Accepted : 2013.03.31
  • Published : 2013.04.10
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Abstract

In this paper, two new methods called Improved Amplitude-Frequency Formulation (IAFF) and Energy Balance Method (EBM) are applied to solve high nonlinear oscillators. Two cases are given to illustrate the effectiveness and the convenience of these methods. The results of Improved Amplitude-Frequency Formulation are compared with those of EBM. The comparison of the results obtained using these methods reveal that IAFF and EBM are very accurate and can therefore be found widely applicable in engineering and other science. Finally, to demonstrate the validity of the proposed methods, the response of the oscillators, which were obtained from analytical solutions, have been shown graphically and compared with each other.

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References

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