Journal ArticleDOI
Bingham and Response Characteristics of ER Fluids in Shear and Flow Modes
TLDR
In this article, the field-dependent Bingham and response characteristics of ER fluid under shear and flow modes were presented and two different types of electroviscometers were designed and manufactured for the shear mode and flow mode, respectively.Abstract:
This paper presents field-dependent Bingham and response characteristics of ER fluid under shear and flow modes. Two different types of electroviscometers are designed and manufactured for the shear mode and flow mode, respectively. An ER fluid consisting of soluble chemical starches (particles) and silicon oil is made and its field-dependent yield stress is experimentally distilled at two different temperatures using the electroviscometers. Time responses of the ER fluid to step electric fields are also evaluated under two operating modes. In addition, a cylindrical ER damper, which is operated under the flow mode, is adopted and its measured damping force is compared with predicted one obtained from Bingham model of the shear and flow mode, respectively.read more
Citations
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Journal ArticleDOI
Shear stress analysis of a semiconducting polymer based electrorheological fluid system
TL;DR: In this article, the electrorheological characteristics of a fluid system with semiconducting poly(naphthalene quinone) (PNQR) particles, synthesized from a Friedel-Craft acylation, were investigated via a rotational rheometer equipped with a high voltage generator.
Journal ArticleDOI
Vibration Control of a Landing Gear System Featuring Electrorheological/Magnetorheological Fluids
Young-Tai Choi,Norman M. Wereley +1 more
TL;DR: In this paper, the feasibility and effectiveness of electrorheological and magnetorheological fluid-based landing gear systems on attenuating dynamic load and vibration due to the landing impact are demonstrated.
Journal ArticleDOI
A magnetorheological semi-active isolator to reduce noise and vibration transmissibility in automobiles
TL;DR: The demand for low cost, quiet operation, and increased operator comfort in automobiles and other applications is requiring that new techniques be developed for noise and vibration isolation as discussed by the authors, which is a challenge in many automotive applications.
Journal ArticleDOI
Comparative Analysis of the Time Response of Electrorheological and Magnetorheological Dampers Using Nondimensional Parameters
Young-Tai Choi,Norman M. Wereley +1 more
TL;DR: In this paper, the authors explore the characteristics of ER and magnetorheological (MR) fluid-based systems on the basis of dynamic range and time response in order to comprehensively understand each system.
Journal ArticleDOI
Electrorheological semi-active damper: Polyaniline based ER system
TL;DR: In this paper, a cylindrical flowmode type electrorheological (ER) damper was used for a semi-active vehicle with polyaniline-based ER fluids.
References
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Journal ArticleDOI
Analysis and testing of Bingham plastic behavior in semi-active electrorheological fluid dampers
TL;DR: In this article, the authors developed and validated a quasi-steady dashpot damper model, based on an idealized nonlinear Bingham plastic shear flow mechanism, for purposes of preliminary design and performance predictions.
Journal ArticleDOI
Electrorheological fluids applied to an automotive engine mount
TL;DR: In this article, the mathematical modeling of electrorheological fluids when used in oscillating squeeze-flow mode; in a prototype automotive engine mount; is concerned with the mathematical modelling of electromagnetic fluids.
Journal ArticleDOI
Control characteristics of a continuously variable ER damper
TL;DR: In this paper, a continuously variable electro-rheological damper for a passenger vehicle is proposed and its control characteristics are investigated, where the field-dependent yield stress of arabic gum-based ER fluid is obtained using a couette type electroviscometer.
Journal ArticleDOI
Feedback Control of Tension in a Moving Tape Using an ER Brake Actuator
TL;DR: In this paper, a feedback controller for a moving tape tensioning system which uses an ER (electro-rheological) brake actuator is presented, where an arabic gum-based ER fluid is composed and its static yield stress is obtained by applying electric fields to the fluid domain.