Transient response of compressed electrorheological fluid

Tian, Yu; Zhang, Minliang; Meng, Yonggang; Wen, Shizhu

doi:10.1016/j.jcis.2005.04.037

Cited by 12 publications

(12 citation statements)

References 33 publications

(59 reference statements)

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“…1 and 2 in this note clearly shows the universal scaling behavior of the yields stress for the experimental data reproduced from Ref. [1]. …”

Section: Resultssupporting

confidence: 68%

“…Electrorheological (ER) fluids have been regarded as one of the smart materials which possess potential industrial applications [1,2], in which they respond rapidly and reversibly under an external electric field changing their rheological properties such as shear viscosity and yield stress [3][4][5]. The ER fluids are typically formed by dispersing electrically polarized particles into an insulating oil, and the particles of dry-based ER fluids usually possess electroresponsive polarizing groups of polar molecules or semiconductive repeating units [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Comment on “Universal yield stress equation for transient response of zeolite based electrorheological fluid”

Park

Choi

2010

Journal of Colloid and Interface Science

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“…1 and 2 in this note clearly shows the universal scaling behavior of the yields stress for the experimental data reproduced from Ref. [1]. …”

Section: Resultssupporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Comment on “Universal yield stress equation for transient response of zeolite based electrorheological fluid”

Park

Choi

2010

Journal of Colloid and Interface Science

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“…While at higher external field strength, structure strengthening of ER fluids should be taken into account [5]. In order to provide a practical knowledge to design and control ER actuators involving voltage on/off adjustment corresponding to different external conditions, transient behaviour of a compressed ER fluid have been experimentally investigated by Tian et al [6]. They illustrated that the amplitude of the applied voltage had small effect on the ascending time.…”

Section: Introductionmentioning

confidence: 99%

Compressive and tensile stresses of magnetorheological fluids in squeeze mode

Mazlan

Ismail

Zamzuri

et al. 2011

JAE

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Magnetorheological (MR) fluid exhibits a perceptible change of rheological properties in reaction to external magnetic field. The MR fluids are currently enjoying renewed interest within the technical community in terms of the fundamental and applied research. MR fluids behaviour in squeeze mode is one of the areas that remain unknown as compared to valve and shear modes. Therefore, this paper presents stress-strain relationships of MR fluids under compression and tension tests. The results demonstrated that MR fluid corresponded to the changes in compressive and tensile stresses due to the changes in magnetic field strength. The compressive stresses were found to be much higher than the tensile stresses for the same experimental parameters. The behaviour of the MR fluids were dependent on the types of the carrier fluid and magnetic field strength. Furthermore, combinations of the stress-strain curves under quasi-static compression and tension modes were matched with the curves under dynamic loading.

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“…Figure 2, Figure 3 and Figure 4 show the compression curves of electrorheological fluids containing WO 3 , WO 3 /SDS, and WO 3 /DDA for different values of the electric field strength applied. At low compression rates, the compressive stress P can be related to the yield point of the plastic fluid τ 0 by the following equation [36,37], P=D3hτ0, where D is the electrode diameter and h is the distance between electrodes. Based on the data regarding the effect of the electric field on the ER fluids’ compressive stress, we calculated the values of the yield stresses for ER fluids under compression.…”

Section: Resultsmentioning

confidence: 99%

Surfactant-Switched Positive/Negative Electrorheological Effect in Tungsten Oxide Suspensions

et al. 2019

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The electrorheological (ER) effect was experimentally observed in dielectric suspensions containing tungsten oxide (WO3) modified with surfactant molecules (sodium dodecyl sulfate (SDS) and dodecylamine (DDA)) in electric fields up to several kilovolts per millimeter. The dielectric properties of WO3 suspensions in silicone oil were analyzed, depending on the frequency of the electric field, in the range from 25 to 106 Hz. Unmodified WO3 suspensions, as well as suspensions modified with sodium dodecyl sulfate, were shown to exhibit a positive electrorheological effect, whereas suspensions modified with dodecylamine demonstrated a negative electrorheological effect. The quantitative characteristics of the negative electrorheological effect in the strain–compression and shear regimes were obtained for the first time. Visualization experiments were performed to see the chain structures formed by WO3 particles modified with sodium dodecyl sulfate, as well as for dynamic electroconvection in electrorheological fluids containing WO3 modified with dodecylamine. The negative electrorheological effect was shown to be associated with the processes of phase separation in the electric field, which led to a multiplicative effect and a strong electroconvection of the suspension at field strengths above 1 kV/mm.

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Transient response of compressed electrorheological fluid

Cited by 12 publications

References 33 publications

Comment on “Universal yield stress equation for transient response of zeolite based electrorheological fluid”

Comment on “Universal yield stress equation for transient response of zeolite based electrorheological fluid”

Compressive and tensile stresses of magnetorheological fluids in squeeze mode

Surfactant-Switched Positive/Negative Electrorheological Effect in Tungsten Oxide Suspensions

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