抄録
This paper deals with the self-excited vibrations of a rotating Mindlin circular plate subjected to a concentrated frictional force exerted on its outer circumference. However, the internal resonance is considered here. It turns out, from the averaging method and a direct numerical integral method that (1) the generating vibration modes related to the internal resonance are fixed in space as the same manner in the single modes generated in a circular plated, and (2) in the internal resonance, the spatial vibration mode of the one with lower natural frequency deviates from that of a stationary circular plate in the rotating direction due to rotation, but the one of the other mode is almost same as that of the stationary circular plate. The internal resonance becomes also unstable, like a single mode, as the rotating speed is increased. The analytical results are confirmed by the experiment.
