Improving the magnetorheological effect in isotropic magnetorheological rubber materials

The influence of particle content on the equi-biaxial fatigue behaviour of magnetorheological elastomers

“…Ferromagnetic particles have been reported to have sizes from a few to a few hundred microns [5]. Pure iron is the most widely used magnetizable particle because of its excellent soft magnetic property, high saturation magnetization and spherical shape [6].…”

Development of a force sensor working with MR elastomers

“…This material also has advantages of good thermal stability, controlled thermal resistivity, low chemical reactivity, low toxicity and high ÀH[LELOLW\ > @ +RZHYHU WKLV PDWHULDO WHQGV WR GHFUHDVH WKH MR effect because of its relatively low magnetic permeability. Lokander and Stenberg [7] found that the matrix material plays an important role in contributing to the absolute MR effect. They concluded that the soft matrix material based MREs can generate higher MR effects than those of hard matrix MREs.…”

Fabrication and characterisation of patterned magnetorheological elastomers

“…The field-dependent modulus change of BCC based MRE was calculated by Eqn (10). In contract to the lattice structure MRE, the BCC based MRE shows a decreasing trend with magnetic field (figure 4).…”

“…the shear direction is in the x axis, the modulus induced by the application of a magnetic field can be computed by taking the derivative of interparticle energy density with respect to the scalar shear strain and divided by the shear strain. (10) where V unit is the unit volume of the structure with one particle. For example, the lattice structure has the V unit =dxÂdyÂdz, as shown in figure 1.…”

“…In literature, both anisotropic [8,9] and isotropic [10,11] MREs were fabricated and their mechanical properties have been investigated analytically and experimentally. In analyzing the field-dependent modulus of MREs, a number of models were proposed based on the analysis of the dipole model for particle energy interaction.…”