Magnetorheological elastomers with particle chain orientation: Modelling and experiments

Jianfei Yao*, Wei Yang, Yu Gao, Fabrizio Scarpa, Yan Li

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

2 Citations (Scopus)
6 Downloads (Pure)

Abstract

This work describes a new model of the magneto-induced shear storage modulus to simulate the shear behavior of magnetorheological elastomers (MRE) with particle chain orientation. The directionality of the chains is here described by using as a parameter the tilt angle with the external magnetic field. The magnetized particles within the MRE are described as magnetic dipoles. The model takes into consideration the dipole-dipole interaction and the magnetic field coupling between the particles in the chain. Magneto-rheological samples with different particle sizes and initial inclination angles have also been prepared and subjected to shear tests in a rheometer facility. The simulations from the model show that the magneto-induced modulus strongly depends on the initial inclination angle of the particle chain. The experimental data are also consistent with the results provided by the model, and confirm that the change of the initial tilt angle of the particle chain is an effective tool to improve the mechanical properties of magneto-rheological elastomers.

Original languageEnglish
JournalSmart Materials and Structures
Volume28
Issue number9
Early online date1 Jul 2019
DOIs
Publication statusPublished - 2 Aug 2019

Structured keywords

  • Bristol Composites Institute ACCIS

Keywords

  • Chain structure orientation
  • Magnetic dipole
  • Magnetoinduced shear modulus
  • Magnetorheological elastomer

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