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Main Title: Voltage-Induced Friction with Application to Electrovibration
Author(s): Heß, Markus
Popov, Valentin L.
Type: Article
Language Code: en
Abstract: Due to the growing interest in robotic and haptic applications, voltage-induced friction has rapidly gained in importance in recent years. However, despite extensive experimental investigations, the underlying principles are still not sufficiently understood, which complicates reliable modeling. We present a macroscopic model for solving electroadhesive frictional contacts which exploits the close analogy to classical adhesion theories, like Johnson-Kendall-Roberts (JKR) and Maugis, valid for electrically neutral bodies. For this purpose, we recalculate the adhesion force per unit area and the relative surface energy from electrostatics. Under the assumption of Coulomb friction in the contact interface, a closed form equation for the friction force is derived. As an application, we consider the frictional contact between the fingertip and touchscreen under electrovibration in more detail. The results obtained with the new model agree well with available experimental data of the recent literature. The strengths and limitations of the model are clearly discussed.
Issue Date: 20-Nov-2019
Date Available: 13-Jan-2020
DDC Class: 530 Physik
Subject(s): friction
contact mechanics
Maugis theory
Sponsor/Funder: TU Berlin, Open-Access-Mittel – 2019
Journal Title: Lubricants
Publisher: MDPI
Publisher Place: Basel
Volume: 7
Issue: 12
Article Number: 102
Publisher DOI: 10.3390/lubricants7120102
EISSN: 2075-4442
Appears in Collections:FG Systemdynamik und Reibungsphysik » Publications

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