玉軸受の振動 : 第2報, 1 / 2分数次玉通過振動について

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タイトル別名
  • Ball Bearing Vibrations : 2nd Report, On the Subharmonic Vibration of Order 1/2 Caused by the Passing Balls
  • タマジクウケ ノ シンドウ

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抄録

The authors analyzed the axial motion of the horizontal rotor supported by a ball bearing and a journal bearing. As the analytical results, it is shown that the ball bearing possesses the spring constant, varying according to the arrangement of the balls, So in some regions the motion becomes unstable and the subharmonic vibration of order 1/2 appears. The statical experiments in order to determine the stiffness of the ball bearing and the dynamical experiments to measure the subharmonic vibrations of order 1/2 were carried out for the two ball bearings, having 3 and 6 balls, respectively. The unstable regions where the subharmonic vibration arose agreed with the analytical results. At the boundaries of the stable and the unstable, the subharmonic vibration and the forced vibration caused by the inclination of the groove of the inner ring built up a beat. The period and the phase of the beat agreed with the analytical results.

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