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A disc-type magneto-rheologtic fluid damper

Journal of Zhejiang University-SCIENCE A volume 4, pages 514–519 (2003)Cite this article

Abstract

A disc-type magneto-rheological fluid damper operating in shear mode is proposed in this paper, which is based on the special characteristics of the magneto-rheological (MR) fluid with rapid, reversible and dramatic change in its rheological properties by the application of an external magnetic field. The magnetic field of the disc-type MR fluid damper is analysed by the finite element method; the controllability of the disc-type MR fluid damper on the dynamic behaviour of a rotor system; and the effectiveness of the disc-type MR fluid damper in controlling the vibration of a rotor system, are studied in a flexible rotor system with an overhung disc. it is shown that the magnetic flux density of the disc-type MR fluid damper in the working areas can significantly change with the applied current in the coil; and that the dynamic behavior of the disc-type MR fluid damper can be varied by the application of an external magnetic field produced by a low voltage electromagnetic coil. The disc-type MR fluid damper can significantly change the dynamic characteristics of a rotor system, provided that the location of the disk-type MR fluid damper is carefully chosen. The disc-type MR fluid damper is a new actuator with good dynamic characteristics for rotating machinery.

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Affiliations

  1. College of Electrical Engineering, Zhejiang University, 310027, Hangzhou, China

    Zhu Chang-sheng

Authors
  1. Zhu Chang-sheng
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Additional information

Project supported partially by the EC BRITE/EURAM program under BRPR-CT97-0544 IMPACT project and State Key Laboratory of Vibration, Shock and Noise, Shanghai Jiatong University

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Chang-sheng, Z. A disc-type magneto-rheologtic fluid damper. J. Zhejiang Univ. Sci. A 4, 514–519 (2003). https://doi.org/10.1631/jzus.2003.0514

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  • DOI: https://doi.org/10.1631/jzus.2003.0514

Key Words

  • Magneto-rheological fluid
  • Damper
  • Rotordynamics
  • Vibration
  • Active vibration control

Document code

  • A

CLC number

  • TH113.1