Magnetic particle chains embedded in elastic polymer matrix under pure transverse shear and energy conversion

Gildas Diguet, Gaël Sebald, Masami Nakano, Mickael Lallart, Jean Yves Cavaillé

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A model of structured Magneto-rheological Elastomer made of a soft matrix filled by magnetic particles was studied for energy harvesting, in pure shear condition. The particles were supposed to be aligned in a chain along which the magnetic field is applied and considering a shear strain applied in a plane perpendicularly to the chain. As the strain is applied and assuming the deformation is homogeneous and the particles remain aligned, both of the axis of their alignment and inter-distance between particles change, affecting their magnetic state. The aim of this work is to evaluate how far the magnetic induction variation induced by mechanical solicitation can be converted into electric signal. We firstly analyzed the magnetic susceptibility of a particle in the chain, and then derived an analytical expression for the composite permeability as a function of shear strain. FEM simulations taking into account the particle magnetic saturation was also performed to estimate the optimal conditions (magnetic field values, shear amplitude, etc.) maximizing the energy conversion potentials.

Original languageEnglish
Pages (from-to)39-49
Number of pages11
JournalJournal of Magnetism and Magnetic Materials
Volume481
DOIs
Publication statusPublished - 2019 Jul 1

Keywords

  • Energy conversion
  • Magnetization
  • Magneto-Rheological Elastomer
  • Pseudo-Villari

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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