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Experimental study of the magnetic field enhanced Payne effect in magnetorheological elastomers

  • The dynamic modulus and the loss factor of magnetorheological elastomers (MREs) of various compositions and anisotropies are studied by dynamic torsion oscillations performed in the absence and in the presence of an external magnetic field. The emphasis is on the Payne effect, i.e. the dependence of the elastomer magnetorheological characteristics on the strain amplitude and their evolution with cyclically increasing and decreasing strain amplitudes. MREs are based on two silicone matrices differing in storage modulus (soft, G' similar to 10(3) Pa, and hard, G' similar to 10(4) Pa, matrices). For each matrix, the concentration of carbonyl iron particles with diameters of 3-5 mu m was equal to 70 and 82 mass% (22 and 35 vol%, respectively) in the composite material. Samples for each filler content, isotropic and aligned-particles, are investigated. It is found that the Payne effect significantly increases in the presence of an external magnetic field and varies with the cyclical loading which reaches saturation after several cycles. The results are interpreted as the processes of formation-destruction-reformation of the internal filler structure under the simultaneously applied mechanical force and magnetic field. Impacts of matrix elasticity and magnetic interactions on the filler alignment are elucidated.

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Metadaten
Author:Vladislav V. Sorokin, Eva Ecker, Gennady V. StepanovORCiD, Mikhail Shamonin (Chamonine)ORCiDGND, Gareth J. MonkmanORCiDGND, Elena Yu Kramarenko, Alexei R. Khokhlov
DOI:https://doi.org/10.1039/c4sm01738b
Parent Title (English):Soft Matter
Publisher:ROYAL Society of CHEMISTRY
Document Type:Article
Language:English
Year of first Publication:2014
Release Date:2022/05/12
Tag:BEHAVIOR; CARRAGEENAN; DAMPERS; MODEL; SEALS; SENSITIVE ELASTOMERS; Shear modulus; VISCOELASTIC PROPERTIES; WIDE-RANGE MODULATION
Volume:10
Issue:43
First Page:8765
Last Page:8776
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Intelligente Materialien und Strukturen
Fakultät Elektro- und Informationstechnik / Mechatronics Research Unit (MRU)
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG