Magneto-induced rheological properties of magnetorheological gel under quasi-static shear with large deformation

Mao, Runsong; Wang, Huixing; Zhang, Guang; Ye, Xudan; Wang, Jiong

doi:10.1039/d0ra05843b

Cited by 10 publications

(10 citation statements)

References 37 publications

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“…However, the results shown in Figure 11B do not agree with that theory and its corresponding phenomenon. The results displayed in Figure 11B could be explained with the following hypothesis (Liu et al, 2014;Mao et al, 2020). The macroscopic normal stress behavior of MRG is primarily dependent on the evolution of particle chain microstructure.…”

Section: Influence Of Shear Rate On the Normal Stress Behaviormentioning

confidence: 69%

“…Finally, the MRG samples with different CIP contents were fabricated after blending CIP with PU matrix evenly and named as . More details about the synthesized procedure could be seen in our previous work (Mao et al, 2020).…”

Section: Experiments Fabrication Of Magnetorheological Gelmentioning

confidence: 99%

“…On the other hand, the quasi-static loading comprises two types of loading mode (Mao et al, 2020)-monotonic loading mode and cyclic loading mode-as shown in Figure 3. In the monotonic loading mode, the shear strain applied on the samples increases linearly from 0 to 100% in four different times (i.e., 200, 50, 25, and 12 s).…”

Section: Testing For Normal Stressmentioning

confidence: 99%

“…This is possibly due to the special sigmoid shapes of the N d -H curves. The increasing speed of normal stress (i.e., the slopes of N d -H curves) firstly appears a fast growth and then slows down after the magnetic field strength exceeds a critical value (Mao et al, 2020). Thus, a modified magnetization model (Zubieta et al, 2009) was used to describe the variation of normal stress with magnetic field strength under the quasistatic shear mode.…”

Section: Influence Of Magnetic Field On the Normal Stress Behaviormentioning

confidence: 99%

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Magneto-Induced Normal Stress of Magnetorheological Gel Under Quasi-Statically Monotonic and Periodically Cyclic Loading

Mao

Wang

et al. 2021

Front. Mater.

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Magnetorheological (MR) gel, an analog of MR fluid, is a novel kind of magnetic-responsive material. In this article, the influence of quasi-statically monotonic loading and periodically cyclic loading on the normal stress behavior of MR gel (MRG) is systemically investigated. Firstly, carbonyl iron powder (CIP) and soft polymer were adopted for the fabrication of MRG. Then, the variations of normal stress with shear strain were tested under different excited magnetic fields, shear rates, CIP contents, and shear strain amplitudes. It was found that the normal stress behavior of MRG exhibits three prominent stages: a sudden rise at the beginning, followed by a rapid decrease, and then a final steady-state value. The experiments also indicated that the excited magnetic field, compared with other influencing factors, has the most critical effect on the normal stress behavior of MRG. The corresponding mechanisms of various phenomena were methodically discussed. Furthermore, the ratio of shear stress to normal stress was proposed to better comprehend the mechanism of the evolution of internal microstructures of MRG and MR effects from a novel perspective. The results implied that the ratio has a close relation to the excited magnetic field and CIP content of MRG. The increase of normal stress is helpful for the fabrication of MRG with a high-efficiency MR effect.

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Section: Influence Of Shear Rate On the Normal Stress Behaviormentioning

confidence: 69%

Section: Experiments Fabrication Of Magnetorheological Gelmentioning

confidence: 99%

Section: Testing For Normal Stressmentioning

confidence: 99%

Section: Influence Of Magnetic Field On the Normal Stress Behaviormentioning

confidence: 99%

See 2 more Smart Citations

Magneto-Induced Normal Stress of Magnetorheological Gel Under Quasi-Statically Monotonic and Periodically Cyclic Loading

Mao

Wang

et al. 2021

Front. Mater.

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“…The magnetorheological (MR) material is an intelligent material, it generally includes MR fluid (Cheng et al, 2021), MR gel (Mao et al, 2020;Zhang and Wang, 2020), MR elastomer (Yang et al, 2015;Fu et al, 2019) and MR grease (Ye et al, 2021). its rheological properties will change continuously, rapidly and reversibly under the external magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Creep and Recovery Behaviors of Lithium-Based Magnetorheological Grease

Wang

2021

Front. Mater.

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This article studies the creep and recovery behavior of magnetorheological grease (MRG) under constant stress shear. The experiment is done by using a parallel plate rheometer with magnetron attachment and temperature control unit. The effects of constant stress, CI particle concentration, magnetic flux density and temperature on creep and recovery behavior are systematically studied. Experimental results show that as the constant stress increases, the response strain will also increase. The creep strain tested under zero field is higher than the value tested under a magnetic field, indicating that the creep and recovery behavior of MRG is highly dependent on the magnetic field strength. In addition, the creep and recovery behavior of MRG is greatly affected by temperature. Under the action of a magnetic flux density, the creep strain will decrease with the increase of temperature. The result is opposite at zero magnetic field.

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Strain dependent magneto-mechanical property of magnetorheological gel composite: Rheological measurement and model establishment

Mao

Wang

Cai

et al. 2022

Composites Science and Technology

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Magneto-induced rheological properties of magnetorheological gel under quasi-static shear with large deformation

Abstract: Magnetorheological gel is a material composed of magnetic particles and polyurethane. CIPs content, shear rate, shear strain amplitude and magnetic field affect damping performance. The magento-induced enhancement of energy dissipation density of MRG-60 could reach 104900%.

Cited by 10 publications

References 37 publications

Magneto-Induced Normal Stress of Magnetorheological Gel Under Quasi-Statically Monotonic and Periodically Cyclic Loading

Magneto-Induced Normal Stress of Magnetorheological Gel Under Quasi-Statically Monotonic and Periodically Cyclic Loading

Creep and Recovery Behaviors of Lithium-Based Magnetorheological Grease

Strain dependent magneto-mechanical property of magnetorheological gel composite: Rheological measurement and model establishment

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