A novel energy absorber based on magnetorheological gel

Pang, Haoming; Xuan, Shouhu; Sun, Chuanlin; Gong, Xinglong

doi:10.1088/1361-665x/aa834c

Cited by 18 publications

(16 citation statements)

References 35 publications

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“…7. Our previous study shows that the developed MR gel has shearthinning rheological behavior [11,12]. This model consists of a simple Bouc-Wen model in parallel with a dashpot element.…”

Section: Bouc-wen Dynamic Model Without Spring Elementmentioning

confidence: 99%

“…These features equip MR gel with great potentials in engineering applications, such as developing damper and vibration absorber. Till now, there are only a few works been done till now on the development of the MR gel devices [9][10][11] and the majority of the research on the MR gel focused on the preparation and characterization of the material. Zhang et al [12][13] have investigated the dynamic behaviors of MR gel with the various weight fractions of carbonyl-iron-particle using large-amplitude oscillation shear.…”

Section: ．Introductionmentioning

confidence: 99%

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Modeling the non-linear rheological behavior of magnetorheological gel using a computationally efficient model

Zhang¹,

Li²,

Yu³

et al. 2020

Smart Mater. Struct.

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Magnetorheological (MR) gel is a novel generation of smart MR material, which has the inherent hysteretic properties and strain stiffening behaviors that are dependent on applied excitation, i.e., magnetic field. The main challenge for the application of the MR gel is the accurate reproduction of the above characteristics by a computationally efficient model that can predict the dynamic stressstrain/rate responses. In this work, parametric modeling on the nonlinear rheological behavior of MR gel is conducted. Firstly, a composite MR gel sample was developed by dispersing carbon iron particles into the polyurethane matrix. The dynamic stress-strain/rate responses of the MR gel are obtained using a commercial rheometer with strain-controlled mode under harmonic excitation with frequencies of 0.1Hz, 5Hz and 15Hz and current levels of 1A and 2A at a fixed amplitude of 10%. Following a mini-review on the available mathematical models, the experimental data is utilized to fit into the models to find the best candidate utilizing a genetic algorithm (GA). Then, a statistical analysis is conducted to evaluate model performance. The non-symmetrical Bouc-Wen model outperforms all other models in reproducing the nonlinear behavior of MR gel. Finally, the parameter sensitivity analysis is employed to simplify the non-symmetrical Bouc-Wen model and then the parameter generalization is conducted and verified for the modified non-symmetrical Bouc-Wen model.

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“…7. Our previous study shows that the developed MR gel has shearthinning rheological behavior [11,12]. This model consists of a simple Bouc-Wen model in parallel with a dashpot element.…”

Section: Bouc-wen Dynamic Model Without Spring Elementmentioning

confidence: 99%

Section: ．Introductionmentioning

confidence: 99%

Modeling the non-linear rheological behavior of magnetorheological gel using a computationally efficient model

Zhang¹,

Li²,

Yu³

et al. 2020

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…MR elastomer mainly works by changing its modulus through magnetic field during pre-yield stage, which shows different working mechanism with MR fluid (MR fluid mainly works at post-yield stage). The examples for the application of MR gel are relatively less in comparison with MR fluid or MR elastomer, but the unique magneto-induced phenomena have attracted more and more attentions; some work concentrating on the potential applications of MR gel have been reported [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Magneto-Sensitive Smart Materials and Magnetorheological Mechanism

Xu¹,

Liao²,

Liu³

2020

Nanofluid Flow in Porous Media

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Magneto-sensitive smart materials, also named as magnetorheological (MR) materials, are a class of smart composites prepared by dispersing nanometer-or micrometer-sized ferromagnetic fillers into the different carrier matrix. As the rheological properties can be controlled by an external magnetic field rapidly, reversibly, and continuously, magneto-sensitive smart materials have great application potential in construction, automotive industry, artificial intelligence, etc. In this chapter, a brief history and classification of magneto-sensitive smart materials are firstly summarized. Next, we discuss the state-of-the-art of the magnetorheological mechanism through experimental and theoretical studies, respectively. Finally, the prospect for this material in the future is presented.

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“…8,9 Recently, this type of stimuli-responsive smart material has been attracting increasing interest and has been widely used in dampers, vibration controllers, body armors and isolators. [10][11][12][13][14][15][16] RMG is obtained by uniformly dispersing CIP into a shear thickening matrix; therefore, the shear thickening effect and magnetorheological effect are two major properties of the gel.…”

Section: Introductionmentioning

confidence: 99%