Microstructures and viscoelastic properties of anisotropic magnetorheological elastomers

Chen, L; Gong, Xinglong; Li, Weihua

doi:10.1088/0964-1726/16/6/069

Cited by 218 publications

(186 citation statements)

References 15 publications

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“…MR elastomer is the solid-state analogue of MR fluid, and a new branch of MR materials [9][10][11][12][13][14][15]. The problems existing in MR suspensions such as particle sediment are well overcome via replacing the fluid matrix by a solid matrix such as a polymer.…”

Section: Introductionmentioning

confidence: 99%

Damping of magnetorheological elastomers

Chen

Gong

2008

J. Cent. South Univ. Technol.

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The damping property of magnetorheological (MR) elastomers is characterized by a modified dynamic mechanical-magnetic coupled analyzer. The influences of the external magnetic flux density, damping of the matrix, content of iron particles, dynamic strain, and driving frequency on the damping properties of MR elastomers were investigated experimentally. The experimental results indicate that the damping properties of MR elastomers greatly depend on the interfacial slipping between the inner particles and the matrix. Different from general composite materials, the interfacial slipping in MR elastomers is affected by the external applied magnetic field.

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Section: Introductionmentioning

confidence: 99%

Damping of magnetorheological elastomers

Chen

Gong

2008

J. Cent. South Univ. Technol.

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“…Experimental observations have found that both the shear modulus (e.g. Jolly et al, 1996;Zhou, 2003;Chen et al, 2007) and tensile modulus (e.g. Bellan & Bossis, 2002;Varga et al, 2006;Abramchuk et al, 2007) of these materials increase under a magnetic field, as shown in Fig.…”

Section: Literature Reviewmentioning

confidence: 90%

Mechanics of magneto-active polymers

Han

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“…This indicates that the MR effect is high when the distances between the iron particles are close to each other due to the low strain. Chen et al [16] reported that the anisotropic MRE applied with a magnetic field of 1T during curing exhibited the 1200% higher MR effect than the isotropic MRE. However, the difference was not clear in this study.…”

Section: Mrementioning

confidence: 99%

“…Chen et al [15] observed that the addition of carbon black increased the mechanical properties of MREs and showed higher MR effect. Regarding the arrangement of iron particles, Chen et al [16] observed higher MR effect in anisotropic MREs than isotropic MREs. Especially, as the magnitude of the applied magnetic field increased (up to 1 Tesla), thicker chain structures were formed and the MR effect was high.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Natural Rubber‐Based Magnetorheological Elastomers at Large Strain for Base Isolators

Lee

Kim

Jung

2018

Shock and Vibration

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To withstand harsh conditions and have a moderate strength, it is desirable to use natural rubber for base isolators. In addition, previous studies have measured the magnetorheological (MR) effect under low-strain range, mostly within 10%. In the reality, it is necessary to evaluate the performance under large-strain range for base isolators. In this study, material properties of natural rubberbased MREs with various mixing ratios were evaluated under large-strain range (∼100%). In the first step, MREs with various iron ratios were fabricated and evaluated to observe the MR effect according to the ratio and arrangement of iron powder. As a result, the highest MR effect (22.0% at 100% strain) and damping ratio (10.29%) were observed in the sample with 35% iron ratio, and the MR effect of the isotropic and the anisotropic MRE did not show significant difference under large-strain (50∼100%). In the second step, MRE samples containing the optimum iron ratio (investigated in the first step) and various mixing ratios of carbon black and naphthenic oil were prepared. As a result, the MRE containing 60phr of carbon black and 40phr of naphthenic oil had the highest MR effect (33.8% at 100% strain). Compared to the case without additives, it showed an obvious improvement.

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Microstructures and viscoelastic properties of anisotropic magnetorheological elastomers

Cited by 218 publications

References 15 publications

Damping of magnetorheological elastomers

Damping of magnetorheological elastomers

Mechanics of magneto-active polymers

Fabrication and Characterization of Natural Rubber‐Based Magnetorheological Elastomers at Large Strain for Base Isolators

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