Microscale Modeling and Simulation of Magnetorheological Elastomers

Kalina, Karl A.; Brummund, Jörg; Metsch, Philipp; Kästner, Markus

doi:10.1002/pamm.201710008

Cited by 4 publications

(7 citation statements)

References 9 publications

(18 reference statements)

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“…As shown in Fig. In case of a rectangular shaped sample, this effect intensifies [2,3]. In case of a rectangular shaped sample, this effect intensifies [2,3].…”

Section: Resultsmentioning

confidence: 89%

“…The presented approach is based on a general continuum formulation of the coupled magneto-mechanical boundary value problem [1,2,5] which is valid on the micro-as well as the macroscale. To link these two scales, a suitable homogenization scheme is applied [4,5].…”

Section: Theoretical Frameworkmentioning

confidence: 99%

“…All RVEs are analyzed by means of three pure mechanical load cases (M1 -M3) and seven coupled magneto-mechanical load cases (MM1 -MM7) in the linear magnetic regime, see [2]. Within the microscopic simulations, the constitutive models presented in [1,5] are used.…”

Section: Microscopic Simulationsmentioning

confidence: 99%

“…Due to the inhomogeneous fields inside the MRE sample [2,3], this procedure however requires several simplifying assumptions. In the former, the heterogeneous microstructure is explicitly resolved and it is possible to predict the effective behavior of the composite.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Development of a Macro‐Model for Magnetorheological Elastomers based on Microscopic Simulations

Kalina

Metsch

Brummund

et al. 2019

Proc Appl Math and Mech

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Herein, the parametrization of a macro-model for magneto-rheological elastomers based on microscopic simulations is presented. Within a computational homogenization, the effective response of the composite system is calculated and the data are used for parameter identification. The merit of this strategy is the adjustment of the model independent of any macroscopic sample geometry. With the developed model, the magnetostrictive behavior of a macroscopic sample is simulated.

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“…As shown in Fig. In case of a rectangular shaped sample, this effect intensifies [2,3]. In case of a rectangular shaped sample, this effect intensifies [2,3].…”

Section: Resultsmentioning

confidence: 89%

Section: Theoretical Frameworkmentioning

confidence: 99%

Section: Microscopic Simulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of a Macro‐Model for Magnetorheological Elastomers based on Microscopic Simulations

Kalina

Metsch

Brummund

et al. 2019

Proc Appl Math and Mech

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition, as a basic issue, the study of the interaction between two magnetic particles still keeps developing [80][81][82]. Moreover, besides the microstructure-based analytical model of MREs, the phenomenological continuous medium-based models were also studied [83][84][85][86][87][88][89][90][91][92][93]. These works focus on theoretically and/or experimentally studying the magneto-viscoelastic models for MREs.…”

Section: Analytical Modelsmentioning

confidence: 99%

Magnetorheological Elastomers: Materials and Applications

Liu¹,

Xu²

2019

Smart and Functional Soft Materials

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Magnetorheological elastomers (MREs) are a type of soft magneto-active rubber-like material, whose physical or mechanical properties can be altered upon the application of a magnetic field. In general, MREs can be prepared by mixing micron-sized magnetic particles into nonmagnetic rubber-like matrices. In this chapter, the materials, the preparing methods, the analytical models, and the applications of MREs are reviewed. First, different kinds of magnetic particles and rubber-like matrices used to prepare MREs, as well as the preparing methods, will be introduced. Second, some examples of the microstructures, as well as the microstructure-based analytical models, of MREs will be shown. Moreover, the magnetic field-induced changes of the macroscopic physical or mechanical properties of MREs will be experimentally given. Third, the applications of MREs in engineering fields will be introduced and the promising applications of MREs will be forecasted. This chapter aims to bring the reader a first-meeting introduction for quickly knowing about MREs, instead of a very deep understanding of MREs.

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Collision and separation of nickel particles embedded in a polydimethylsiloxan matrix under a rotating magnetic field: A strong magneto active function

et al. 2021

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In order to function as soft actuators, depending on their field of use, magnetorheological elastomers (MREs) must fulfill certain criteria. To name just a few, these can include rapid response to external magnetic fields, mechanical durability, mechanical strength, and/or large deformation. Of particular interest are MREs which produce macroscopic deformation for small external magnetic field variations. This work demonstrates how this can be achieved by just a small change in magnetic field orientation. To achieve this, (super)paramagnetic nickel particles of size ≈ 160 μm were embedded in a non-magnetic polydimethylsiloxan (PDMS) (661–1301 Pa) and their displacement in a stepwise rotated magnetic field (170 mT) recorded using a video microscope. Changes in particle aggregation resulting from very small variations in magnetic field orientation led to the observation of a new strongly magneto-active effect. This configuration is characterized by an interparticle distance in relation to the angle difference between magnetic field and particle axis. This causes a strong matrix deformation which in turn demonstrates hysteresis on relaxation. It is shown that the occurrence strongly depends on the particle size, particle distance, and stiffness of the matrix. Choosing the correct parameter combination, the state can be suppressed and the particle-matrix system demonstrates no displacement or hysteresis. In addition, evidences of non-negligible higher order magnetization effects are experimentally ascertained which is qualitatively in agreement with similar, already theoretically described, particle systems. Even at larger particle geometries, the new strongly magneto-active configuration is preserved and could create macroscopic deformation changes.

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Microscale Modeling and Simulation of Magnetorheological Elastomers

Cited by 4 publications

References 9 publications

Development of a Macro‐Model for Magnetorheological Elastomers based on Microscopic Simulations

Development of a Macro‐Model for Magnetorheological Elastomers based on Microscopic Simulations

Magnetorheological Elastomers: Materials and Applications

Collision and separation of nickel particles embedded in a polydimethylsiloxan matrix under a rotating magnetic field: A strong magneto active function

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