Experimental Comparison of Constitutive Models for Magnetorheological Fluids Under Different Conditions

Li, Haopeng; Jönkkäri, Ilari; Sarlin, Essi; Chen, Fei

doi:10.1007/s13538-021-00989-2

Cited by 8 publications

(6 citation statements)

References 25 publications

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“…In addition, the viscosity model of STF usually appears in a segmented form in order to better describe the entire shear thickening viscosity rheology, which limits its applicability to some extent. MRSTF commonly used stress constitutive model, such as Bingham model (equation ( 4)) [44,45], Herschel-Bulkley model (equation ( 5)) [46]:…”

Section: Model Derivationmentioning

confidence: 99%

Research on rheological properties and phenomenological theory-based constitutive model of magnetorheological shear thickening fluids

Zhao,

Wang,

Yuan

et al. 2023

Smart Mater. Struct.

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This paper investigates the rheological properties of magnetorheological shear thickening fluid (MRSTF) and proposes a phenomenological theory-based constitutive model. Multiple samples with varying mass fractions and particle sizes were prepared. Then, the rheological properties were experimentally studied, including the effects of silicon particle size and concentration, carbonyl iron powder concentration and magnetic field on rheological properties. Next, the sedimentation stability experiment was also carried out by the static observation method. Finally, based on phenomenological theory, a constitutive model called the M-S model was derived through geometric transformation of shear stress curves. The results show that there is an inhibitory relationship between magnetorheological and shear thickening effect, and the correlation between composition and rheological properties was established, which can provide guidance for preparation of MRSTF with required properties. It also shows that the MRSTF under specific preparation scheme could effectively avoid sedimentation, and its performance is clearly superior to traditional materials in terms of sedimentation resistance and damping adjustment. The accuracy and universality of the proposed model are fully verified by fitting shear stress curves and calculating the goodness of fit values. All these investigations can offer an effective guidance for further study of MRSTF in controllable damping equipment development.

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Section: Model Derivationmentioning

confidence: 99%

Research on rheological properties and phenomenological theory-based constitutive model of magnetorheological shear thickening fluids

Zhao,

Wang,

Yuan

et al. 2023

Smart Mater. Struct.

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“…As shown in Figure 3, the average magnetic flux in the gap approaches 0.65 Tesla, which is strong enough for MR fluid to reach its saturation condition. According to the MR effect, MR fluid behaves like a Newtonian fluid in zero field, which can be demonstrated with density ρ and viscosity η 0 , and like a Bingham fluid (Li et al, 2021) when stimulated:…”

Section: Design Of Mreamentioning

confidence: 99%

Unsteady extension of quasi-steady physical modeling and experimental verification of a magnetorheological energy absorber

et al. 2022

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Magnetorheological (MR) fluids are promising in controllable damping based on regulated apparent viscosity under magnetic field control, and they are employed in various damping devices such as automotive dampers and energy absorbers for artillery or landing gears by medium substitution with structural adaptations. In this study, we designed and fabricated a magnetorheological energy absorber (MREA) with disc springs as recoiling parts, modeled the MR fluid flow based on the Bingham constitutive model, and then carried out unsteady extension based on the quasi-steady model. The experimental tests of the MREA show that the unsteady extension of the quasi-steady model can designate the behaviors of the MREA in different impact speeds better than the original; thus, the controllability of the MREA is verified. An interesting phenomenon, where a rippled MREA peak force is observed at the saturated excitation when the impact speed is not so high and disappears when the impact speed is high enough, is accounted from the viewpoint of flow modeling and finally verified by more experimental results.

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“…Magnetorheological (MR) fluid is an essential branch of smart materials and consist mainly of soft magnetic particles, based carrier fluid and additives (Li et al, 2021a; Vadillo et al, 2021; Zhang et al, 2021). Under the applied magnetic field, the MR fluid is instantaneously transformed from a free-flowing Newtonian fluid to a semi-solid state as a Bingham fluid (Li et al, 2021b). The degree of hardening can be continuously adjusted by the strength of the applied magnetic field (Rwei et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

The research of a multi-stage roller type magnetorheological transmission device on temperature properties

Ji,

Tian,

et al. 2023

Journal of Intelligent Material Systems and Structures

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Magnetorheological Transmission Device (MRTD) is a controllable power regulation device using magnetorheological fluid as the transmission medium. It has characteristics of fast response, a wide range of speed regulations, and a pollution-free environment. The traditional pairwise transmission structure has serious heat generation problems during operation, resulting in low transmission efficiency. Therefore, we innovatively propose a multi-stage roller type MRTD to improve the heat generation problem fundamentally. The steady-state and transient temperature fields of the multi-stage roller type MRTD are simulated using the thermal analysis module in ANSYS based on the temperature field formulation. The variations of internal temperature at different slip powers are obtained. The results show that the designed multi-stage roller type MRTD has a good suppression of temperature rise. This study can provide a new approach to improve the thermal performance of MRTD.

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Experimental Comparison of Constitutive Models for Magnetorheological Fluids Under Different Conditions

Cited by 8 publications

References 25 publications

Research on rheological properties and phenomenological theory-based constitutive model of magnetorheological shear thickening fluids

Research on rheological properties and phenomenological theory-based constitutive model of magnetorheological shear thickening fluids

Unsteady extension of quasi-steady physical modeling and experimental verification of a magnetorheological energy absorber

The research of a multi-stage roller type magnetorheological transmission device on temperature properties

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