On the Shaft End Torque and the Forced Vibrations of an Asymmetrical Shaft Carrying an Asymmetrical Rotor

Abstract

In a rotating asymmetrical shaft with an asymmetrical rotor, the increase rate of total energy and the torque applied to the shaft end change with the angular positions of the static and dynamic unbalances. The response curve also changes with the angular positions of the rotor unbalances. With a rotor mounted on the middle of an asymmetrical shaft, the parallel motion of the rotor is not connected with its conical motion, and the shaft end torque can be directly obtained from the equilibrium of forces and moments. The shaft end torque in an asymmetrical shaft and an asymmetrical rotor changes with the angular positions of rotor unbalances in a similar way to the response curve.