INVESTIGATION OF BENDING VIBRATIONS OF ROTATING SHAFTS WITH DISTRIBUTED INERTIAL CHARACTERISTICS
One of the main problems of ensuring elastic stability and long-term strength of the system under cyclically changing external influences of rotating shafts is investigated. Method: A review and comparative study of a number of analytical and numerical methods for calculating bending vibrations of rotating shafts is carried out. The construction of a direct analytical solution was carried out using the continuation method by parameter. The main results: This model allows us to take into account the distribution of elastic, inertial and eccentric properties of the system, and is also applicable for any operating frequency range. Free and forced shaft oscillations caused by the presence of eccentricity are investigated. Practical significance: The sensitivity of the installation to an additional external force factor of a given order is investigated. The frequency characteristics of the system under consideration are constructed and compared with the results of field tests. Methods of damping shaft vibrations using controlled (active) magnetic bearings are proposed.
Unsteady Bending Vibrations, Shaft, Center Of Mass, Inertia Forces, Shaft Deformations, Elastic Shaft Forces, Distributed Characteristics, Strength, Disk Eccentricity, Analytical Methods, Numerical Methods, Experiment.