The University of Southampton
University of Southampton Institutional Repository

Modelling, characterization and development of new magnetorheological elastomers with enhanced vibration control performance

Modelling, characterization and development of new magnetorheological elastomers with enhanced vibration control performance
Modelling, characterization and development of new magnetorheological elastomers with enhanced vibration control performance
Magnetorheological elastomers (MRE) are a category of smart materials that can adjust their mechanical properties according to the intensity of an external magnetic field. The aim of this project is to develop new magnetorheological elastomers with improved isolation efficiency for applications in the marine industry. For this reason, novel silicon isotropic/anisotropic and anisotropic/anisotropic, with particles aligned at different directions, composite MR elastomers were manufactured. The samples were tested under pure compression and combined shear/compression loading mode, using an inclined prototype isolator device, to examine the principal elastic axis stiffness kp/kq and damping ratio cp/cq . MR effect of dynamic stiffness is higher in pure compression isolator than the inclined isolator while MR effect of tangent of loss angle tanδ is higher in inclined isolator than pure compression. For the inclined test, the highest MR effect of 48% for K’ and 68% for K’’, is observed for the pure anisotropic sample and the lowest of 26% and 30% respectively for the isotropic MRE. Anisotropic/anisotropic parallel configuration has the same zero field static stiffness, lower dynamic stiffness, higher tanδ and same MR effect with anisotropic MRE. For all samples, the principal elastic axis stiffness kp/kq and damping ratio cp/cq changes with the magnetic field. A nonlinear viscoelastic model was also developed using receptance and mobility instead of stiffness and dashpot, to express the moduli of elasticity in respect to the applied force. Finally, a single degree of freedom mass-isolator with composite samples was simulated to show the enhanced vibration isolation properties of the composite samples.
University of Southampton
Sapouna, Kyriaki
a54469a9-832d-4b51-88ff-a8df08ad1a6b
Sapouna, Kyriaki
a54469a9-832d-4b51-88ff-a8df08ad1a6b
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49

Sapouna, Kyriaki (2018) Modelling, characterization and development of new magnetorheological elastomers with enhanced vibration control performance. University of Southampton, Doctoral Thesis, 233pp.

Record type: Thesis (Doctoral)

Abstract

Magnetorheological elastomers (MRE) are a category of smart materials that can adjust their mechanical properties according to the intensity of an external magnetic field. The aim of this project is to develop new magnetorheological elastomers with improved isolation efficiency for applications in the marine industry. For this reason, novel silicon isotropic/anisotropic and anisotropic/anisotropic, with particles aligned at different directions, composite MR elastomers were manufactured. The samples were tested under pure compression and combined shear/compression loading mode, using an inclined prototype isolator device, to examine the principal elastic axis stiffness kp/kq and damping ratio cp/cq . MR effect of dynamic stiffness is higher in pure compression isolator than the inclined isolator while MR effect of tangent of loss angle tanδ is higher in inclined isolator than pure compression. For the inclined test, the highest MR effect of 48% for K’ and 68% for K’’, is observed for the pure anisotropic sample and the lowest of 26% and 30% respectively for the isotropic MRE. Anisotropic/anisotropic parallel configuration has the same zero field static stiffness, lower dynamic stiffness, higher tanδ and same MR effect with anisotropic MRE. For all samples, the principal elastic axis stiffness kp/kq and damping ratio cp/cq changes with the magnetic field. A nonlinear viscoelastic model was also developed using receptance and mobility instead of stiffness and dashpot, to express the moduli of elasticity in respect to the applied force. Finally, a single degree of freedom mass-isolator with composite samples was simulated to show the enhanced vibration isolation properties of the composite samples.

Text
Sapouna_23725907_thesis_2018 - Version of Record
Available under License University of Southampton Thesis Licence.
Download (16MB)

More information

Published date: May 2018

Identifiers

Local EPrints ID: 433119
URI: http://eprints.soton.ac.uk/id/eprint/433119
PURE UUID: d494eca3-43ae-41b5-825b-fdbd89fc1287
ORCID for Kyriaki Sapouna: ORCID iD orcid.org/0000-0002-2967-0820
ORCID for Yeping Xiong: ORCID iD orcid.org/0000-0002-0135-8464

Catalogue record

Date deposited: 08 Aug 2019 16:30
Last modified: 09 Aug 2019 00:37

Export record

Contributors

Author: Kyriaki Sapouna ORCID iD
Thesis advisor: Yeping Xiong ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×