The dynamic behavior of flexible rotor systems subjected to base excitation (support movements) is investigated theoretically and experimentally. The study focuses on behavior in bending near the critical speeds of rotation. A mathematical model is developed to calculate the kinetic energy and the strain energy. The equations of motion are derived using Lagrange equations and the Rayleigh-Ritz method is used to study the basic phenomena on simple systems. Also, the method of multiple scales is applied to study stability when the system mounting is subjected to a sinusoidal rotation. An experimental setup is used to validate the presented results.

Issue Section:
Technical Papers
Keywords:
stability, rotors, vibrations, structural acoustics
Topics:
Disks, Excitation, Rotors, Stability, Kinetic energy, Rotation, Equations of motion
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Copyright © 2006
 by American Society of Mechanical Engineers
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