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New Passive Control Methods for Reducing Vibrations of Rotors: Discontinuous Spring Characteristics and Ball Balancers

  • Yukio IshidaEmail author
Conference paper
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 1011)

Abstract

This paper introduces a new passive vibration suppression method called the discontinuous spring characteristics and provides a methods to improve the efficiency of automatic ball balancers. The former method can be used to suppress the amplitude at a resonance and also be applied to suppress unstable oscillations of an asymmetrical shaft and a rotor partially filled with liquid. An automatic ball balancer can suppress vibrations above the major critical speed theoretically. However, the friction reduces the effect of this balancer. This paper introduces a very simple method to eliminate the influence of the friction. Finally, the simultaneous use of these two methods is recommended.

Keywords

Vibration suppression Resonance Unstable oscillation Nonlinear vibration Discontinuous spring characteristics Rotor with liquid Ball balancer 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Department of Mechanical Science and EngineeringNagoya UniversityNagoyaJapan

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