Shock and Vibration

Shock and Vibration / 2012 / Article

Open Access

Volume 19 |Article ID 950980 |

A. Barari, A. Kimiaeifar, M.G. Nejad, M. Motevalli, M.G. Sfahani, "A Closed Form Solution for Nonlinear Oscillators Frequencies Using Amplitude-Frequency Formulation", Shock and Vibration, vol. 19, Article ID 950980, 12 pages, 2012.

A Closed Form Solution for Nonlinear Oscillators Frequencies Using Amplitude-Frequency Formulation

Received11 Oct 2011
Revised30 Jan 2012


Many nonlinear systems in industry including oscillators can be simulated as a mass-spring system. In reality, all kinds of oscillators are nonlinear due to the nonlinear nature of springs. Due to this nonlinearity, most of the studies on oscillation systems are numerically carried out while an analytical approach with a closed form expression for system response would be very useful in different applications. Some analytical techniques have been presented in the literature for the solution of strong nonlinear oscillators as well as approximate and numerical solutions. In this paper, Amplitude-Frequency Formulation (AFF) approach is applied to analyze some periodic problems arising in classical dynamics. Results are compared with another approximate analytical technique called Energy Balance Method developed by the authors (EBM) and also numerical solutions. Close agreement of the obtained results reveal the accuracy of the employed method for several practical problems in engineering.

Copyright © 2012 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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