Damping of an Elastic Beam Using an MR Suspension in the Squeeze Mode

Magneto-rheological (MR) suspensions are actively used in damping devices. As a rule these suspensions are made of magnetic particles in a carrier fluid. In this paper we study a device aiming to control the vibration of a plate by using a MR fluid. The magnetic field is used both to control the vis...

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Bibliographic Details
Published in:Journal of intelligent material systems and structures 2002-07, Vol.13 (7-8), p.515-519
Main Authors: Bashtovoi, V. G., Kabachnikov, D. N., Bossis, G.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Electro- and magnetorheological fluids
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Material types
Physics
Rheology
Solid mechanics
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Vibrations and mechanical waves
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Summary:Magneto-rheological (MR) suspensions are actively used in damping devices. As a rule these suspensions are made of magnetic particles in a carrier fluid. In this paper we study a device aiming to control the vibration of a plate by using a MR fluid. The magnetic field is used both to control the viscosity and to confine the drop of fluid in the field gradient. A theoretical investigation of the motion of the plate is given together with the prediction of the damping decrement, assuming that the magnetic fluid follows a Bingham law. Experiments have been realized and are compared with theoretical predictions.
ISSN:1045-389X
1530-8138
DOI:10.1106/104538902029559