Article ID Journal Published Year Pages File Type
288899 Journal of Sound and Vibration 2011 5 Pages PDF
Abstract

Velocity-dependent-frequency (VDF) oscillators are represented (for one-degree-of-freedom systems) by the differential equation x¨+f(x˙)x=0, f(0)>0f(0)>0. However, the standard methods for determining approximations to the periodic solutions may breakdown in their corresponding first-order calculations. In particular, the frequencies may become singular for finite values of the amplitude. A technique combining averaging and first-order iteration is shown to resolve this difficulty.

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