Large-strain behaviour of Magneto-Rheological Elastomers tested under uniaxial compression and tension, and pure shear deformations

Schubert, G. and Harrison, P. (2015) Large-strain behaviour of Magneto-Rheological Elastomers tested under uniaxial compression and tension, and pure shear deformations. Polymer Testing, 42, pp. 122-134. (doi:10.1016/j.polymertesting.2015.01.008)

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Abstract

The large-strain behaviour of Magneto-Rheological Elastomers (MREs) is characterised experimentally under uniaxial compression, uniaxial tension and pure shear deformation, in the absence and in the presence of magnetic fields. MREs are ‘smart’ materials that can alter their properties instantaneously by the application of external stimuli. They hold great potential for use in adaptive stiffness devices. So far, the large-strain behaviour of MREs has not been well explored, and their behaviour under pure shear deformation has not been characterised. Tests on silicone rubber based isotropic and anisotropic MREs, with and without the application of an external magnetic field have been performed in this investigation. The MR effect, defined as the increase in tangent moduli, is studied versus large engineering strain. Strains were measured optically using a Digital Image Correlation (DIC) system. Relative MR effects up to 284% were found under uniaxial tension, when a magnetic field strength of 290 mT was applied with the loading direction parallel to the direction of particle alignment.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Schubert, Ms Gerlind and Harrison, Dr Philip
Authors: Schubert, G., and Harrison, P.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Polymer Testing
Publisher:Elsevier Ltd.
ISSN:0142-9418
ISSN (Online):1873-2348
Copyright Holders:Copyright © 2015 Elsevier, Ltd.
First Published:First published in Polymer Testing 42:122-134
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

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