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Related Experiment Videos

A disc-type magneto-rheologic fluid damper.

Chang-sheng Zhu1

  • 1College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China. cszhu@hotmail.com

Journal of Zhejiang University. Science
|September 6, 2003
PubMed
Summary
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A novel disc-type magneto-rheological (MR) fluid damper effectively controls rotor system vibrations. This MR fluid damper offers adjustable dynamic characteristics for rotating machinery using a low-voltage electromagnetic coil.

Area of Science:

  • Mechanical Engineering
  • Materials Science
  • Control Systems

Background:

  • Magneto-rheological (MR) fluids exhibit rapid, reversible property changes under magnetic fields.
  • Controlling dynamic behavior in rotor systems is crucial for machinery performance.

Purpose of the Study:

  • To propose and analyze a disc-type MR fluid damper for rotor systems.
  • To investigate the damper's controllability and vibration reduction effectiveness.

Main Methods:

  • Finite element method for magnetic field analysis.
  • Experimental study on a flexible rotor system with an over-hung disc.

Main Results:

  • Magnetic flux density is controllable via applied coil current.

Related Experiment Videos

  • Damper's dynamic behavior is adjustable with an external magnetic field.
  • Significant changes in rotor system dynamics achieved with optimal damper placement.

    • Conclusions:

    • The disc-type MR fluid damper is a viable actuator for rotating machinery.
    • Effective vibration control is demonstrated in flexible rotor systems.
    • Low-voltage electromagnetic coils enable tunable damper performance.