Аңдатпа
The article presents the results of a study of the resonance oscillations of a gyroscopic vertical rotor supported at its lower end by a hinged joint, at its upper end, closer to the rotor disk by a viscoelastic support and above the disk connected to the fixed part using a shear magnetic bearing. Assuming that the radii of the turns are significantly smaller than the distance between them, the attractive force of the fixed current turn of the movable current turn is determined, the equations of motion of the gyroscopic rotor system are formulated. The amplitude characteristic shows that the use of the proposed magnetic bearing reduces the vibration amplitude of the rotor in the region to a critical speed, shifts the critical speed towards its increase. Involving the nonlinear stiffness of the support material when interacting with linear and cubical nonlinear damping transfers the vibration insulation properties of the magnetic bearing attractive forces from the region of less than the critical value of the shaft rotation speeds to the region near the resonant speed.