Anomalous magnetorheological effect in unstructured magnetoisotropic magnetoactive elastomers
- 10 February 2020
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 116 (6), 063701
- https://doi.org/10.1063/1.5122250
Abstract
It was found that the anomalous magnetorheological effect observed in initially unstructured magnetoisotropic magnetoactive elastomers, i.e., the growth of their effective shear modulus in an external magnetic field by almost two orders of magnitude, is a result of the uniaxial magnetic anisotropy induced by the magnetic field. An additional magnetoelastic contribution to the mechanical stress created by the induced magnetic anisotropy counteracts the shear and increases the effective shear modulus of the magnetoactive elastomer when the latter is magnetized. Numerical estimates made for the magnitude of magnetorheological effect are in good agreement with known experimental data.Funding Information
- Recruitment Program of Global Experts (WQ20162200339)
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