Analytical findings show optimal damping reduces rotor resonance in systems, suggesting improved design approaches.
Analytical results of rotor synchronous response show similar results with the well known ones of dynamic vibration absorber. Designing the flexible support with an appropriate combination of equivalently concentrated mass of pedestal, bearing support stiffness, and optimum damping, the peak amplitude of a rotor-shaft system is found to be kept nearly to the value of rotor eccentricity.
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Ota et al. (1976) studied this question.
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