The effect of microstructure on the dynamic equi-biaxial fatigue behaviour of magnetorheological elastomers

Y. F. Zhou, S. Jerrams, A. Betts, L. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Dynamic equi-biaxial fatigue behaviour of isotropic and anisotropic Magnetorheological Elastomers (MREs) based on a silicone rubber matrix was investigated using the bubble inflation method. Constant engineering stress amplitude was used as the control mode and samples were fatigued over different stress ranges between 0.75 MPa and 1.4 MPa. S-N (Wohler) curves showing plots of stress amplitude (σa) versus cycles to failure (N) are presented. Stress-strain behaviour throughout the fatigue process is described. Elastic modulus (E*) was studied for the specific cycles measured. It was found that anisotropic MREs exhibited greater fatigue resistance than isotropic MREs for a given magnetic particle content. Stress softening and hysteresis continued throughout the tests though they were most pronounced in the first dozen cycles at the lower stress amplitudes. A limiting value of E*, below which fatigue failure is likely to take place was observed in both isotropic and anisotropic MREs, although the initial modulus was higher in anisotropic MREs.

Original languageEnglish
Title of host publicationConstitutive Models for Rubber VIII - Proceedings of the 8th European Conference on Constitutive Models for Rubbers, ECCMR 2013
PublisherTaylor and Francis - Balkema
Pages683-688
Number of pages6
ISBN (Electronic)9781315884844
ISBN (Print)9781138000728
DOIs
Publication statusPublished - 2013
Event8th European Conference on Constitutive Models for Rubbers, ECCMR 2013 - San Sebastian, Spain
Duration: 25 Jun 201328 Jun 2013

Publication series

NameConstitutive Models for Rubber VIII - Proceedings of the 8th European Conference on Constitutive Models for Rubbers, ECCMR 2013

Conference

Conference8th European Conference on Constitutive Models for Rubbers, ECCMR 2013
Country/TerritorySpain
CitySan Sebastian
Period25/06/1328/06/13

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