Importance of matrix inelastic deformations in the initial response of magnetic elastomers

  title={Importance of matrix inelastic deformations in the initial response of magnetic elastomers},
  author={Pedro A S{\'a}nchez and Thomas Gundermann and A. B. Dobroserdova and Sofia S. Kantorovich and Stefan Odenbach},
  journal={Soft Matter},
  pages={2170 - 2183}
The initial magnetic response of magnetic elastomers can be explained by irreversible polymer matrix deformations under first external field application. 
Surface relief of magnetoactive elastomeric films in a homogeneous magnetic field: molecular dynamics simulations
The structure of a thin magnetoactive elastomeric (MAE) film adsorbed on a solid substrate is studied by molecular dynamics simulations.
Investigation magnetorheological elastomer elastic deformations under the influence of vibration and electromagnetic load
Experimental studies of the magnetorheological elastomer dynamic properties under the influence of vibrations and magnetic fields have been carried out. Amplitude-frequency characteristics of theseExpand
Modeling the magnetostriction effect in elastomers with magnetically soft and hard particles.
This work analyzes theoretically the field-induced microstructural deformations in a hybrid elastomer, that consists of a polymer matrix filled with a mixture of magnetically soft and magnetically hard spherical microparticles, showing that the combination of magnetic soft and hard particles may lead to an unusual magnetostriction effect. Expand
Magnetic anisotropy in magnetoactive elastomers, enabled by matrix elasticity
Abstract Polydimethylsiloxane based magnetoactive elastomers demonstrate above the melting transition range (e.g. at room temperature) an induced uniaxial magnetic anisotropy, which grows withExpand
Magnetostriction in elastomers with mixtures of magnetically hard and soft microparticles: effects of nonlinear magnetization and matrix rigidity
In this contribution a magnetoactive elastomer (MAE) of mixed content, i.e., a polymer matrix filled with a mixture of magnetically soft and magnetically hard spherical particles, is considered. TheExpand
Magneto-Mechanical Coupling in Magneto-Active Elastomers
The presented results show a remarkable agreement of both modeling approaches and help to provide an improved understanding of the interactions in magneto-active elastomers with chain-like microstructures. Expand
Effects of local rearrangement of magnetic particles on deformation in magneto-sensitive elastomers.
The presented formalism allows analyzing non-affine displacements of magnetic particles in a general way and reveals how the local rearrangement of particles under a magnetic field affects the magneto-induced deformation. Expand
Chain Structure in a Cross-Linked Polyurethane Magnetic Elastomer Under a Magnetic Field
Computed tomography images revealed that magnetic particles were distributed isotopically in the absence of a magnetic field, but they formed a chain structure in the polyurethane network under a magneticField of 270 mT. Expand
The loss of mechanical stability and the critical magnetization of a ferromagnetic particle in an elastomer.
The rotation of a spherical magnetically soft ferromagnetic particle with uniaxial magnetic anisotropy and located in an elastomer through a certain angle under the action of a magnetic field has been studied theoretically and was found to result in a maximum in the field dependence of the magnetic susceptibility. Expand
An explicit dissipative model for isotropic hard magnetorheological elastomers
Abstract Hard magnetorheological elastomers ( h -MREs) are essentially two phase composites comprising permanently magnetizable metallic inclusions suspended in a soft elastomeric matrix. This workExpand


Motion of ferroparticles inside the polymeric matrix in magnetoactive elastomers.
The basic points of a model accounting for particle structuring in a magnetoactive elastomer under an external field are presented and it is concluded that all these effects are caused by reversible motion of the magnetic particles inside the polymeric matrix in response to an applied field. Expand
Hydrodynamics of isotropic ferrogels.
We derive the complete set of macroscopic dynamic equations for ferrogels under an external magnetic field, including the magnetization as an independent dynamic degree of freedom. TheExpand
New Composite Elastomers with Giant Magnetic Response
Novel magnetorheological elastomers (MRE) based on a highly elastic silicone rubber filled with carbonyl iron magnetic particles of 3―5 and 3―50 μm are synthesized. The effect of an externalExpand
Magnetorheological (MR) elastomers are composite materials consisting of magnetic particles in elastomer matrices, whose mechanical properties can be influenced by applying a magnetic field. MainExpand
Magneto-sensitive Elastomers in a Homogeneous Magnetic Field: A Regular Rectangular Lattice Model
A theory of mechanical behaviour of the magneto-sensitive elastomers is developed in the framework of a linear elasticity approach. Using a regular rectangular lattice model, different spatialExpand
Development and characterization of magnetorheological elastomers
A new class of materials termed magnetorheological elastomers (MREs) are developed that respond to externally imposed magnetic fields. Magnetic particles are embedded in viscoelastic solids or liquidExpand
First-order reversal curve analysis of magnetoactive elastomers
The first magnetization loop and the first stress–strain cycle of magnetoactive elastomers (MAEs) in a magnetic field differ considerably from the following loops and cycles, possibly due to theExpand
Magnetic properties of hybrid elastomers with magnetically hard fillers: rotation of particles
Hybrid magnetic elastomers belonging to the family of magnetorheological elastomers contain magnetically hard components and are of the utmost interest for the development of semiactive and activeExpand
Dynamic elastic moduli in magnetic gels: Normal modes and linear response.
The present approach explicitly connects the relaxational modes of the system with the rheological properties as well as with the internal rearrangement of the particles in the sample, providing new insight into the dynamics of these remarkable materials. Expand
Magnetorheological elastomers: properties and applications
Magnetorhelogical (MR) elastomers are viscoelastic solids whose mechanical properties are controllable by applied magnetic fields. We have developed a family of MR elastomers, comprisingExpand