Viscoelastic properties of MR elastomers under harmonic loading

Li, Weihua; Zhou, Yang; Tian, Tongfei

doi:10.1007/s00397-010-0446-9

Cited by 249 publications

(197 citation statements)

References 22 publications

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“…In our experimental study [23], harmonic loadings with various strain amplitudes ranging from 1% to 50%, and frequencies from 1 Hz to 10 Hz, were used to study dynamic properties of MRE samples. Fig.…”

Section: Dynamic Propertiesmentioning

confidence: 99%

Magnetorheological Elastomers and Their Applications

Zhang

2013

Advanced Structured Materials

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Section: Dynamic Propertiesmentioning

confidence: 99%

Magnetorheological Elastomers and Their Applications

Zhang

2013

Advanced Structured Materials

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“…Iron particles are generally used as the filler material to fabricate MREs. Both natural rubber and silicone rubber are used as typical matrixes [11,12]. Additives are commonly used to adjust the mechanical and chemical properties or electrical performance of MR fluids [13] as well as MR elastomers [14].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of PDMS based magnetorheological elastomers

Nakano

2013

Smart Mater. Struct.

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This paper presents the fabrication and characterization of a new magnetorheological elastomer (MRE) by using polydimethylsiloxane (PDMS) as a matrix. The base and curing agent of PDMS with a weight ratio of 10:1 were mixed first as the carrying matrix, and then carbonyl iron particles were added to the matrix and stirred sufficiently. The final mixture was placed in a vacuum chamber to eliminate bubbles for 30 min and was moulded later to form membranes of 1 mm thickness. A total of four PDMS based MRE samples, with different weight fractions of 60%, 70%, 80%, and 90%, were fabricated. Their mechanical properties under both steady-state and dynamic loading conditions were tested. The effects of particle composition, magnetic field, strain amplitude and frequency on the MRE effects were summarized. With the increase of iron particle composition, the magnetorheological effects of the samples increase steadily. It is also noted that the initial modulus of the MRE samples shows an increasing trend with the iron particle composition. Additionally, the microstructures of the PDMS based MREs were also observed by a low vacuum scanning electric microscope (LV-SEM). Sendai, Japan AbstractThis paper presents the fabrication and characterisation of a new magnetorheological elastomer (MRE) by using Polydimethylsiloxane (PDMS) as a matrix. The base and curing agent of PDMS with a weight ratio of 10:1 were mixed first as the carrying matrix, then carbonyl iron particles were added to the matrix and stirred sufficiently. The final mixture was placed in a vacuum chamber to eliminate bubbles in 30 minutes and was molded later to be membranes at 1mm thickness. A total of four PDMS based MRE samples, with different weight fractions of 60%, 70%, 80%, and 90%, were fabricated. Their mechanical properties under both steady-state and dynamic loading conditions were tested. The effects of particle composition, magnetic field, strain amplitude and frequency on the MRE effects were summarized. With the increase of iron particle composition, the PDMS based MRE samples increase steadily. It is also noted that the initial modulus of the MRE samples shows an increasing trend with the iron particle composition. Additionally, the microstructures of the PDMS based MREs were also observed by a low vacuum scanning electric microscope (LV SEM).

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“…The additional of stiffness element is to improve the efficiency of Kevin model under sudden loading. Built on this model, Li et al [50] developed a four-parameter viscoelastic model, as shown in figure 33. In this model, a stiffness element is in parallel with the three-parameter model.…”

Section: Rheological Modeling Of Mr Elastomer Materialsmentioning

confidence: 99%

“…Figure 33. Four-parameter viscoelastic model proposed by Li et al [50] Three-parameter model is normally used to describe the viscoelastic behavior of rubber material. The three-parameter is a combination of stiffness element and a classical Kevin model (being a stiffness element and damping element in parallel).…”

Section: Rheological Modeling Of Mr Elastomer Materialsmentioning

confidence: 99%

A state-of-the-art review on magnetorheological elastomer devices

Li¹,

Li²,

Li³

et al. 2014

Smart Mater. Struct.

529

385

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During the last few decades, magnetorheological (MR) elastomers have attracted a significant amount of attention for their enormous potential in engineering applications. Because they are a solid counterpart to MR fluids, MR elastomers exhibit a unique field-dependent material property when exposed to a magnetic field, and they overcome major issues faced in magnetorheological fluids, e.g. the deposition of iron particles, sealing problems and environmental contamination. Such advantages offer great potential for designing intelligent devices to be used in various engineering fields, especially in fields that involve vibration reduction and isolation. This paper presents a state of the art review on the recent progress of MR elastomer technology, with special emphasis on the research and development of MR elastomer devices and their applications. To keep the integrity of the knowledge, this review includes a brief introduction of MR elastomer materials and follows with a discussion of critical issues involved in designing magnetorheological elastomer devices, i.e. operation modes, coil placements and principle fundamentals. A comprehensive review has been presented on the research and development of MR elastomer devices, including vibration absorbers, vibration isolators, base isolators, sensing devices, and so on. A summary of the research on the modeling mechanical behavior for both the material and the devices is presented. Finally, the challenges and the potential facing magnetorheological elastomer technology are discussed, and suggestions have been made based on the authors' knowledge and experience. Abstract:During last decades, magnetorheological (MR) elastomer has attracted significant amount of attention for its enormous potentials in engineering applications. Being a solid counterpart of MR fluids, MR elastomers exhibit unique field-dependent material property when being exposed to magnetic field, in meanwhile overcoming major issues faced in magnetorheological fluids, e.g. deposition of iron particles, sealing problem and environmental contamination. Such advantages offer great potentials for designing intelligent devices to be used in various engineering fields, especially for vibration reduction and isolation. This paper presents a state-of-the-art review on the recent progress of MR elastomer technology, with special emphasis on research and development of MR elastomer devices and their applications. To keep the integrity of the knowledge, the review includes a brief introduction of the MR elastomer materials and follows by discussion of critical issues in designing magnetorheological elastomer devices, i.e. operation modes, coil placements and principle fundamentals. A comprehensive review has been presented research and development of MR elastomer devices, including vibration absorbers, vibration isolators, base isolators, sensing devices and so on. Summary of research on modeling mechanical behavior for both material and devices are presented. Finally, challenges and potentials facing ...

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Viscoelastic properties of MR elastomers under harmonic loading

Cited by 249 publications

References 22 publications

Magnetorheological Elastomers and Their Applications

Magnetorheological Elastomers and Their Applications

Fabrication and characterization of PDMS based magnetorheological elastomers

A state-of-the-art review on magnetorheological elastomer devices

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