Results 71 to 80 of about 3,774 (207)

Column size effects of DER fluids

open access: yes, 2001
The static yield stress of dielectric electrorheological(DER) fluids of infinite column state and chain state are calculated from the first principle method.
Ma, H. R., Zhao, Tianyu
core   +1 more source

An Energy Framework to Control Viscoelastic Semi‐Active Devices in Plan‐Wise One‐Way Asymmetric Systems

open access: yesStructural Control and Health Monitoring, Volume 2025, Issue 1, 2025.
This study proposes new strategies for the semi‐active control of the dynamic response of a plan‐wise asymmetrical structural system using viscoelastic devices. Different from some literature proposals, these innovative strategies are designed to be immediately interpretable, aiming to optimize the different terms of the energy balance equation through
M. De Iuliis   +3 more
wiley   +1 more source

Features of the Mechanisms of Conductivity of the Electrorheological Fluids With Double Doped TiO2 Particles Under External Temperature Effects

open access: yesFrontiers in Materials, 2019
Electrophysical and rheological characteristics of ER fluids with TiO2 particles doped with aluminum and phosphorus and having anatase structure are considered in an extended temperature range (5–100°C). The mechanisms of leakage currents in the ER fluid
Evguenia V. Korobko, Zoya A. Novikova
doaj   +1 more source

Static shear modulus of electrorheological fluids [PDF]

open access: yesPhysical Review E, 2006
We report measurements of the static shear modulus of electrorheological (ER) fluids consisting of water-wetted silica microspheres in silicone oil. A shear-annealing method, using creep-recovery (CR) cycles under an external electric field, is used to enhance ER properties of the fluid.
Shi, Lihong   +3 more
openaire   +3 more sources

A Novel Variable‐Stiffness Tail Based on Layer‐Jamming for Robotic Fish

open access: yesAdvanced Intelligent Systems, Volume 6, Issue 11, November 2024.
The design, fabrication, and modeling methods of a novel tail for robotic fish are proposed. The tail can adjust stiffness over a wide range while maintaining ideal hydrodynamic properties and optimal stiffness distribution, which will improve the swimming efficiency of robotic fish.
Zicun Hong   +4 more
wiley   +1 more source

Nonlinear ER effects in an ac applied field

open access: yes, 2001
The electric field used in most electrorheological (ER) experiments is usually quite high, and nonlinear ER effects have been theoretically predicted and experimentally measured recently.
D.J. Klingenberg   +16 more
core   +2 more sources

High Curvature of Polymer‐Based Miniaturized Flexible Actuator at Very Low Electric Field

open access: yesMacromolecular Materials and Engineering, Volume 309, Issue 11, November 2024.
This work proposes a design and polarization routine that significantly improves the deflection of multilayer organic actuators, allows deflection in two directions and eliminates prestressing problems inherent in multilayer devices. Thanks to cost‐effective and industrially scalable manufacturing process of devices, this new approach opens new ...
Simon Toinet   +8 more
wiley   +1 more source

Field strength dependence of the high-frequency viscoelastic relaxation process in polyaniline/silicone oil electrorheological suspensions

open access: yeseXPRESS Polymer Letters, 2008
Polyaniline (PANI) was synthesized via oxidative coupling polymerization in acid conditions and de-doped in ammonia solution. The electrorheological (ER) properties of the PANI/silicone oil suspensions were investigated in the oscillatory mode shear ...
doaj   +1 more source

The Electric Field Responses of Inorganic Ionogels and Poly(ionic liquid)s

open access: yesMolecules, 2020
Ionic liquids (ILs) are a class of pure ions with melting points lower than 100 °C. They are getting more and more attention because of their high thermal stability, high ionic conductivity and dielectric properties.
Zhenjie Zhao   +4 more
doaj   +1 more source

A multiplicity result for a nonlinear degenerate problem arising in the theory of electrorheological fluids

open access: yes, 2006
We study a Dirichlet boundary value problem associated to an anisotropic differential operator on a smooth bounded of $\Bbb R^N$. Our main result establishes the existence of at least two different non-negative solutions, provided a certain parameter ...
Kováčik O   +4 more
core   +1 more source

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