Theoretical analysis on electro adhesive effect of ER gel

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

Abstract

An electrorheological gel (ERG) is a functional material that changes its surface adhesive property according to the intensity of the applied electric field. It is a composite material consisting of ER particles and silicone gel. Under no electric field, the surface adhesion is low because the slippery ER particles protrude from the gel surface. When an electric field is applied to an ERG, silicone gel around ER particles rises and covers the ERG surface such that the surface adhesion becomes high. The surface adhesion of ERGs can be changed quickly and reversibly by adjusting the electric field. This unique property is called the electro adhesive (EA) effect. However, although this electro adhesive phenomenon has been experimentally confirmed, the physical theory has not been sufficiently developed. In this study, the theory of the EA effect based on electromagnetics is developed and validated using a numerical analysis. Simulation results show that ER particles sink into silicone gel, and silicone gel around ER particles heaves due to the Maxwell stress and gradient force of the applied electric field.

Original languageEnglish
Title of host publicationElectro-Rheological Fluids and Magneto-Rheological Suspensions - Proceedings of the 12th International Conference
Pages429-435
Number of pages7
Publication statusPublished - 2011 Dec 1
Event12th International Conference on Electrorheological Fluids and Magnetorheological Suspensions, ERMR 2010 - Philadelphia, PA, United States
Duration: 2010 Aug 162010 Aug 20

Publication series

NameElectro-Rheological Fluids and Magneto-Rheological Suspensions - Proceedings of the 12th International Conference

Other

Other12th International Conference on Electrorheological Fluids and Magnetorheological Suspensions, ERMR 2010
CountryUnited States
CityPhiladelphia, PA
Period10/8/1610/8/20

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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  • Cite this

    Naito, Y., Aoyama, T., & Kakinuma, Y. (2011). Theoretical analysis on electro adhesive effect of ER gel. In Electro-Rheological Fluids and Magneto-Rheological Suspensions - Proceedings of the 12th International Conference (pp. 429-435). (Electro-Rheological Fluids and Magneto-Rheological Suspensions - Proceedings of the 12th International Conference).