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Nonlinear viscoelastic model of isotropic and anisotropic magnetorheological elastomers

Nonlinear viscoelastic model of isotropic and anisotropic magnetorheological elastomers
Nonlinear viscoelastic model of isotropic and anisotropic magnetorheological elastomers
Magnetorheological Elastomers (MREs) is a promising smart material that can adjust its mechanical and dynamic properties instantly and irreversibly when an external magnetic field is applied. Our recent research showed that MREs is governed by a nonlinear stress strain relationship where both stiffness and damping depend nonlinearly on the magnetic field. However, the majority of the researches on MREs relevant publications are limited to linear domain assuming the material behaves linearly in a specific strain range. This paper focuses on the characterization and development of a nonlinear general viscoelastic model that can predict the variation of damping and stiffens with the magnetic field for both types of MRE (anisotropic and isotropic). For this purpose static and dynamic compression tests are performed first for a range of strain amplitudes and magnetic fields. Then a parameter extraction method is developed. An application of the developed MRE model is demonstrated by simulating an active vibration isolator and its isolation effectiveness is predicted numerically using Matlab and Simulink. MRE isolators can be an attractive solution to the complicated active mechanical isolation systems present in many engineering applications in the industry today.
Sapouna, K.
62b64a30-bf10-466f-9970-63de5b445e7c
Xiong, Y.P.
51be8714-186e-4d2f-8e03-f44c428a4a49
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960
Sapouna, K.
62b64a30-bf10-466f-9970-63de5b445e7c
Xiong, Y.P.
51be8714-186e-4d2f-8e03-f44c428a4a49
Shenoi, R.A.
a37b4e0a-06f1-425f-966d-71e6fa299960

Sapouna, K., Xiong, Y.P. and Shenoi, R.A. (2012) Nonlinear viscoelastic model of isotropic and anisotropic magnetorheological elastomers. 4th International Conference “Smart Materials, Structures and Systems" (CIMTEC2012), Italy. 10 - 14 Jun 2012.

Record type: Conference or Workshop Item (Paper)

Abstract

Magnetorheological Elastomers (MREs) is a promising smart material that can adjust its mechanical and dynamic properties instantly and irreversibly when an external magnetic field is applied. Our recent research showed that MREs is governed by a nonlinear stress strain relationship where both stiffness and damping depend nonlinearly on the magnetic field. However, the majority of the researches on MREs relevant publications are limited to linear domain assuming the material behaves linearly in a specific strain range. This paper focuses on the characterization and development of a nonlinear general viscoelastic model that can predict the variation of damping and stiffens with the magnetic field for both types of MRE (anisotropic and isotropic). For this purpose static and dynamic compression tests are performed first for a range of strain amplitudes and magnetic fields. Then a parameter extraction method is developed. An application of the developed MRE model is demonstrated by simulating an active vibration isolator and its isolation effectiveness is predicted numerically using Matlab and Simulink. MRE isolators can be an attractive solution to the complicated active mechanical isolation systems present in many engineering applications in the industry today.

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More information

Published date: 12 June 2012
Venue - Dates: 4th International Conference “Smart Materials, Structures and Systems" (CIMTEC2012), Italy, 2012-06-10 - 2012-06-14
Organisations: Civil Maritime & Env. Eng & Sci Unit

Identifiers

Local EPrints ID: 352903
URI: http://eprints.soton.ac.uk/id/eprint/352903
PURE UUID: 523fc9f6-93a9-4a39-aba1-81bd5624d932
ORCID for Y.P. Xiong: ORCID iD orcid.org/0000-0002-0135-8464

Catalogue record

Date deposited: 20 May 2013 13:58
Last modified: 06 Jun 2018 12:51

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