Nonlinear Restoring Force Characteristic and Vibration of a Rotating Shaft Supported by a Repulsive Magnetic Bearing (Influences of Both the Axial Displacement and the Magnetic Length Ratio)

Sugai, Tomohiro; Inoue, Tsuyoshi; Ishida, Yukio

doi:10.1299/kikaic.77.2169

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Magnetic Bearing1

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2013

2014

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Cited by 2 publications

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“…Magnetic force generally has nonlinear characteristics. Sugai et al (127) studied the nonlinear spring characteristics of a repulsive magnetic bearing, especially, about the effect of the length and the axial displacement of magnet. Inoue et al (128) discussed a vibration suppression method in a repulsive magnetic bearing.…”

Section: Magnetic Bearingmentioning

confidence: 99%

Review of Research on Nonlinear Rotordynamics in Japan

Ishida

2013

JSDD

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This article introduces research on nonlinear rotordynamics in Japan. In most cases, the nonlinearity treated there was weak and it was approximated by a power series of low order. Firstly, the research on various nonlinear resonances due to the weak nonlinearity is introduced. Next, those on more complicated nonlinear phenomena, such as entrainment, internal resonances, chaotic vibrations, nonstationary vibrations, and more complicated systems, such as cracked rotors and continuous rotors, are explained. Then, research on phenomena due to strong nonlinearity is introduced. Various vibration suppression methods where the nonlinearity plays an important role are also explained. Finally, studies on the models representing helicopters and wind turbines are explained.

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Section: Magnetic Bearingmentioning

confidence: 99%