### An iterative algorithm for nonlinear fractional-order oscillators with modified Riemann-Liouville derivative

Document Type : Research Paper

Authors

Applied Mechanics and Design (AMD) Research Group, Department of Mechanical Engineering, Faculty of Engineering, University of Port Harcourt, Port Harcourt, Nigeria

Abstract

This paper presents an iterative analytic algorithm for the approximate solution of nonlinear fractional-order oscillators. The He fractional transform was applied to convert the fractional-order model, defined by a modified Riemann-Liouville derivative, to a model in continuous spacetime. Then, the approximate solution of the continuous model was applied to obtain an approximate solution for the fractional-order oscillator. The solution was obtained using the continuous piecewise linearization method (CPLM), which is a simple, accurate and efficient analytic algorithm. The applicability of the CPLM was demonstrated using representative examples in science and engineering and the maximum relative error of the approximate solution was found to be less than 0.2 per cent. This paper provides an analytical tool that can be applied in the study of fractional-order oscillations arising in various physical systems and technological processes.

Keywords

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###### Volume 13, Issue 2July 2022Pages 499-513
• Receive Date: 09 July 2021
• Revise Date: 13 August 2021
• Accept Date: 01 September 2021