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Magnetorheological behavior of magnetoactive elastomers filled with bimodal iron and magnetite particles

  • Magnetoactive elastomers (MAE) based on soft silicone matrices, filled with various proportions of large diameter ( approximately 50 mu m) iron and small diameter ( approximately 0.5 mu m) magnetite particles are synthesized. Their rheological behavior in homogeneous magnetic fields up to 600 mT is studied in detail. The addition of small magnetite particles facilitates fabrication of uniformly distributed magnetic elastomer composites by preventing aggregation and sedimentation of large particles during curing. It is shown that using the proposed bimodal filler particles it is possible to tailor various magnetorheological (MR) properties which can be useful for different target applications. In particular, either absolute or relative magnetorheological effects can be tuned. The value of the damping factor as well as the range of deformation amplitudes for the linear viscoelastic regime can be chosen. The interdependencies between different MR properties of bimodal MAEs are considered. The results are discussed in the model framework of particle network formation under the simultaneous influence of external magnetic fields and mechanical deformation.

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Metadaten
Author:Vladislav V. Sorokin, Gennady V. StepanovORCiD, Mikhail Shamonin (Chamonine)ORCiDGND, Gareth J. MonkmanORCiDGND, Elena Yu Kramarenko
DOI:https://doi.org/10.1088/1361-665X/26/3/035019
Parent Title (English):Smart materials and structures
Publisher:IOP Publishing
Document Type:Article
Language:English
Year of first Publication:2017
Release Date:2022/04/25
Tag:DAMPING PROPERTIES; FIELD; HYDROGELS; MAGNETOELASTIC BEHAVIOR; Magnetorheological effect; Payne effect; damping factor; magnetorheological elastomer; mechanical hysteresis
Volume:26
Issue:3
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Intelligente Materialien und Strukturen
Fakultät Elektro- und Informationstechnik / Mechatronics Research Unit (MRU)
Begutachtungsstatus:peer-reviewed
research focus:Energie und Mobilität
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG