Development and characterization of a multi-layer magnetorheological elastomer isolator based on a Halbach array

Michal Przybylski, Shuaishuai Sun, Weihua Li

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Most existing vibration isolators and dampers based on magnetorheological (MR) materials need electrical power to feed magnetic coils to stimulate the MR material, so if there is a loss of power, such as during a strong earthquake or system failure, they are unable to protect the structure. This paper outlines the design and test of a controllable multilayered magnetorheological elastomer (MRE) isolator based on a circular dipolar Halbach array; which is a set of magnets that generates a strong and uniform magnetic field. Combining an MRE layered isolator system with the Halbach array allows for constant vibration isolation with very low power consumption, where the power generated is only used to adjust the Halbach position. When this system was tested it successfully altered the lateral stiffness and damping force by 81.13% and 148.72%, respectively. This paper also includes an extended analysis of the magnetic field generated by the circular dipolar Halbach array and a discussion of the improvements that may potentially improve the range of magnetic fields generated.

Original languageEnglish
Article number105015
JournalSmart Materials and Structures
Volume25
Issue number10
DOIs
Publication statusPublished - 2016 Sep 16
Externally publishedYes

Keywords

  • Comsol Multiphysics
  • Halbach array magnets system
  • experimental mechanics
  • multilayered MRE structure
  • smart material
  • vibration attenuation

ASJC Scopus subject areas

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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