The effect of stiffness on friction, surface strain and contact area of a sliding finger pad simulant

Abstract

This study investigates the frictional and surface strain behaviour of silicone hemispherical finger pad simulants with different stiffness during tribological interactions with a smooth glass plate. A novel contact area and strain measurement method employing a digital image correlation technique was employed to give new understanding of the pad behaviour during sliding. The frictional behaviour of the sliding finger pad simulant is dominated by the adhesion mechanism, with a small overall contribution from deformation, as suggested by the high principal strains at the edge of the contact area. The strain behaviour is also influenced by the magnitude of the normal force and the stiffness of the samples.

Metadata

Item Type:	Article
Authors/Creators:	Lee, Z.S. Maiti, R. Carré, M. Lewis, R. https://orcid.org/0000-0002-4300-0540
Copyright, Publisher and Additional Information:	© 2024 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Keywords:	Finger pad simulant; Artificial finger pad; Synthetic finger pad; Friction; Strain; Digital image correlation
Dates:	Published: 1 May 2024 Published (online): 1 May 2024 Accepted: 9 April 2024 Submitted: 12 December 2023
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	08 May 2024 10:19
Last Modified:	08 May 2024 10:19
Status:	Published
Publisher:	Springer Science and Business Media LLC
Refereed:	Yes
Identification Number:	10.1007/s11249-024-01861-5
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:212299

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The effect of stiffness on friction, surface strain and contact area of a sliding finger pad simulant

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