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

• 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
• ISSN: 1045-389X; 1530-8138
• DOI: 10.1106/104538902029559

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.