Optimum design of one-sided patterned electrodes for gel-structured ER fluids by means of a numerical analysis

Hiroaki Watanabe, Yasuhiro Kakinuma, Tojiro Aoyama, Hidenobu Anzai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Electro-Rheological Fluids (ERFs) are functional fluids that change their apparent viscosity by applying electric field. ERF is composed of ER particles and silicon oil. ERF shows reversibility and high responsiveness of ER effects, but has a defect that passage of time causes sedimentation of ER particles. Electro-Rheological Gel (ERG) has been developed to overcome the defect of ERF. ERG is composed of ER particles and silicon gel. A flat plate placed on the ERG sheet clings to the gel by applying an electric field and ERG produces the shear force to the plate. The one-sided pattern of electrodes, which has been developed for ERF devices, is a very useful idea to free sliding or rotating parts from wiring arrangements. In this study, the optimum design of one-sided pattern electrodes for ERG is carried out by means of a numerical analysis. The general-purpose tool for the analysis of electric and magnetic field 'ANSYS Emag' is used. The influences of the electrodes pattern on the performances of ERG are analyzed and the yield forces are estimated from electric field intensity at the interface between the electrodes and ERG. Some experiments are also carried out to examine the validity of the numerical analysis.

Original languageEnglish
Title of host publicationProceedings of the 10th International Conference on Electrorheological Fluids and Magnetorheological Suspensions
Pages741-747
Number of pages7
Publication statusPublished - 2007
Event10th International Conference on Electrorheological Fluids and Magnetorheological Suspensions, ERMR 2006 - Lake Tahoe, NV, United States
Duration: 2006 Jun 182006 Jun 22

Other

Other10th International Conference on Electrorheological Fluids and Magnetorheological Suspensions, ERMR 2006
CountryUnited States
CityLake Tahoe, NV
Period06/6/1806/6/22

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ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

Watanabe, H., Kakinuma, Y., Aoyama, T., & Anzai, H. (2007). Optimum design of one-sided patterned electrodes for gel-structured ER fluids by means of a numerical analysis. In Proceedings of the 10th International Conference on Electrorheological Fluids and Magnetorheological Suspensions (pp. 741-747)