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Yang Jr., G., Spencer, B.F., Carlson, J.D. and Sain, M.K. (2001) Large-Scale MR Dampers: Modeling and Dynamic Performance Considerations. Report. University of Notre Dame, Notre Dame.

has been cited by the following article:

• TITLE: Acoustic Modeling of a 3-Layered Panel Incorporating Electro-Rheological/ Magneto-Rheological (EMR) Fluids

  AUTHORS: Nader Mohammadi

  KEYWORDS: ER/MR Fluid; Multi-Layers Panel; Transmission Loss

  JOURNAL NAME: Open Journal of Acoustics, Vol.4 No.1, March 13, 2014

  ABSTRACT: Applications of Electro-Rheological (ER) or Magneto-Rheological (MR) fluids as typical smart materials have been widely investigated over the past decades (since their introduction in 40’s). The special applications of these materials as a means of noise suppression are not yet investigated. Constrained Layer Damping (CLD) sheets can be realized by incorporating EMR (ER/MR) materials. In this way, a multilayered damping sheet is obtained with adaptive (tunable) stiffness and damping characteristics. These properties are easily changed in proportion to the electric (magnetic) field applied upon the EMR layer. This notion has been introduced for semi-active vibration control problems. Herein, such panels incorporating EMR material are proposed for adaptive acoustic treatments. Modeling (simulation) of a 3-layered panel with the middle layer being EMR with adjustable properties is carried out in this paper. The tunability of transmission/absorption characteristics of these composite sheets enables us making smart panels for adaptive noise and acoustic treatments. An adaptive performance can be achieved via changing the properties of such panels, on line, according to some sensor outputs. The main objective is to develop proper models to predict the Transmission Loss (TL) of such panels. Also, the TL of this panel is compared with the middle layer of a Newtonian fluid.