A macro model for electroadhesive contact of a soft finger with a touchscreen

Argatov, Ivan and Borodich, Feodor M. ORCID: https://orcid.org/0000-0002-7935-0956 2020. A macro model for electroadhesive contact of a soft finger with a touchscreen. IEEE Transactions on Haptics 13 (3) , pp. 504-510. 10.1109/TOH.2020.2969628

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Abstract

A contact problem of electroadhesion for a conductive elastic body pressed against a rigid plane surface of a dielectric coating covering a conductive substrate is formulated applying the Johnsen-Rahbek approximation for the attractive surface stresses and the Derjaguin-Muller-Toporov (DMT) hypothesis about the influence of the adhesive stresses on the deformable shape of the elastic body. An approximate solution is obtained using the Winkler--Fuss deformation model with the equivalent (contact load dependent) stiffness coefficient evaluated according to the Xydas--Kao soft finger model. The friction force under applied voltage is evaluated as the product of the coefficient of friction and the integral of the macro contact pressure over the apparent contact area. The upper and lower estimates for the friction force are discussed in the case of absence of any external normal load.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Institute of Electrical and Electronics Engineers (IEEE)
ISSN:	1939-1412
Date of First Compliant Deposit:	5 March 2020
Last Modified:	01 Dec 2024 09:15
URI:	https://orca.cardiff.ac.uk/id/eprint/130036

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