434 磁気ダンパに起因する回転体の不安定振動(ループモデルによる磁気ダンパのモデル化)

概要

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The well-known analysis of a magnetic damper is the method solving the Poisson's equation about the scalar potential gotten from Ohm's law and the principle of conservation of charge. In this paper, the new analytical method of a magnetic damper is described. Our method is that a conductor is composed of the sets of the infinitesimal loop, and then the magnetic damping force is gotten from the electromotive force generated in the moving loop in the ununiform magnetic field. This method has the great advantage that it doesn't need the scalar potential. We apply the method to unstable vibration of rotating machine caused by magnetic damper. Then we showed the analytical results agree well with the experimental ones quantitatively.
社団法人日本機械学会の論文
2000-09-01