Results 181 to 190 of about 4,350 (261)

Boundary effect in electrorheological fluids

Physical Review E, 2011
The effect of the boundary friction coefficient on the rheological properties of the electrorheological (ER) fluids in quasistatic and dynamic states is investigated by computer simulation. The relation between the shear stress and the boundary friction coefficient in quasistatic and dynamic states is discussed qualitatively and quantitatively, and the
X L, Gong, F, Yang, S H, Xuan, L H, Zong, W, Zhu, W Q, Jiang   +5 more
openaire   +2 more sources

Electrorheological fluids: structures and mechanisms

Soft Matter, 2008
Electrorheology denotes the control of a colloid's flow properties through an electric field. We delineate the basic characteristics of electrorheological (ER) fluids, and show that the use of an effective dielectric constant concept can yield quantitative predictions.
Wen, Weijia, Huang, Xianxiang, Sheng, Ping   +2 more
openaire   +3 more sources

Electro-osmosis of electrorheological fluids

Physical Review E, 2013
Electrorheological fluids are suspensions that are characterized by a strong functional dependence of the constitutive behavior of the fluids on the electric field. In this work, we consider electro-osmosis of an electrorheological fluid through a channel where a transverse, nonuniform electric field is spontaneously induced due to the presence of an ...
Jayabrata, Dhar, Aditya, Bandopadhyay, Suman, Chakraborty   +2 more
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Continuum modelling of electrorheological fluids

Electrorheological Fluids and Magnetorheological Suspensions, 2002
A thermodynamical continuum modelling is proposed for electrorheological fluids. This theormodynamical approach tries to describe the response of an electrorheological fluid in the solid phase (which means with an applied adequate electric field) under mechanical solicitations. Thermodynamic formulations distinguish the contributions due to reversible
DROUOT R, NAPOLI, Gaetano, RACINEUX G.
openaire   +6 more sources

Electrorheological effects of polyaniline‐type electrorheological fluids

Journal of Applied Polymer Science, 2002
AbstractThree kinds of particles—polyaniline (PANI), poly(o‐toludine) (POT), and brominated polyaniline (Br‐PANI)—were synthesized. With chlorinated paraffin as a disperse oil, their electrorheological (ER) effects were determined so that the influence of the phenyl substitute group on the ER effects could be considered.
Liucheng Zhang, Kai Su, Xiucuo Li
openaire   +1 more source

Electrorheological fluids using bi-dispersed particles

Physica B: Condensed Matter, 1998
We report very large enhancement of static yield stress for electrorheological fluids by adding ferroelectric nanoparticles of lead zirconate titanate (PZT) or lead titanate (PbTiO3) to ER fluids consisting of 50 μm glass spheres. It is found that the enhancement peaks at certain nanoparticle/microparticle ratios for fixed solid/liquid volume fractions.
Tam, Wing Yim, Wen, Weijia, Sheng, Ping
openaire   +3 more sources

Transient response of compressed electrorheological fluid

Journal of Colloid and Interface Science, 2005
Transient behaviors of a compressed electrorheological (ER) fluid based on zeolite and silicone oil have been experimentally investigated. The ER fluid is purely compressed between two parallel plates. Compressive speed and voltage amplitude effects on the transient process and randomly applied on/off voltages have been studied.
Yu, Tian, Minliang, Zhang, Yonggang, Meng, Shizhu, Wen   +3 more
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MULTISCALE ANALYSIS OF ELECTRORHEOLOGICAL FLUIDS

International Journal of Modern Physics B, 2002
We construct a microscale model for a rigid particle suspension in a viscous fluid that includes Maxwell electrostatic forces. Via homogenization techniques we characterize the properties the material exhibits at the macroscale. The change in the effective constitutive equations is due to the highly oscillating electrostatic forces.
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Electrorheological (ER) Fluids

2016
Electrorheological (ER) fluids, similar to the MR fluids, belong to the general class of smart materials whose rheological characteristics are identified by applying an electric field instead of magnetic field in MR fluids. In other words, the ER fluids consist of electrical polarizable particles dispersed in carrier fluid with surfactant complimentary,
Abdollah Hajalilou, Saiful Amri Mazlan, Hossein Lavvafi, Kamyar Shameli   +3 more
openaire   +1 more source

Vibration and damping analysis of sandwich electrorheological fluid deep arches with bi-directional FGM containers

Engineering structures, 2023
Zhichun Fang, Zhen Zhu, Pengfei Wu, Zohre Moradi   +3 more
semanticscholar   +1 more source