Analytical Investigation to Nonlinear Vibration of an Electrical Machine Supported by Nonlinear Bearings
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2009, Vol 6, Issue 2
Abstract
In this paper we analytically investigate the nonlinear behavior of an electrical machine supported by nonlinear bearings characterized by a nonlinear stiffness of Duffing type. The Optimal Homotopy Asymptotic Method is employed to obtain analytical approximate solutions. Complementary numerical solutions were obtained via a fourth-order Runge–Kutta method and an excellent agreement between the solutions obtained through OHAM and the numerical computations was observed, which demonstrate the reliability and efficiency of OHAM. The results obtained by using the proposed method can be directly employed to predict the dynamic behaviour of the rotating electric machine.
Authors and Affiliations
Nicolae Herişanu, Vasile Marinica
Keywords
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