2017 Volume 25 Issue 1 Pages 42-48
To quench the forced vibration of the motor stator caused by the rotating distributed electromagnetic force, single mass is set on the stator which is supported by the two springs. Moreover, two Houde dampers are installed on the outside of the circular stator. The solutions of forced vibration are obtained by using the ring theory and the finite element method. The following were made clear; By setting an mass at the position of hoop of cos mode and setting spring supports at the positions of hoops of sin mode, those resonance frequencies are separated enough each other. As a result, the vibration amplitude of the stator becomes lower. Moreover, by setting two Houde dampers with the interval of hoop and node of the considered mode, the vibration of the stator is quenched over wide frequency region around the resonances. The characteristics of the results obtained by the ring theory coincide with those of the results obtained by the finite element method.
