Tailorable and repeatable normal contact stiffness via micropatterned interfaces

Perris, J., Xu, Y. , Kartal, M. E., Gadegaard, N. and Mulvihill, D. M. (2021) Tailorable and repeatable normal contact stiffness via micropatterned interfaces. Tribology Letters, 69, 106. (doi: 10.1007/s11249-021-01473-3)

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An approach to producing interfaces with tailored and repeatable normal contact stiffness using micropatterned surfaces is developed. A finite element model is first used to design square wave interfaces having a range of stiffnesses, and these are fabricated in polycarbonate via a microfabrication process. Results demonstrate that the contact stiffnesses of the fabricated interfaces are both tailorable and repeatable. The approach can be broadened to other materials and is useful for applications requiring specified interface stiffness. Finally, even with these deterministic interfaces, we show that low levels of roughness on the surface features are sufficient to produce a load-dependent contact stiffness at lower loads. Therefore, tailorability is mostly applicable above this limit where total contact stiffness converges to a load-independent value.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Perris, Mr Jack and Mulvihill, Dr Daniel and Xu, Dr Yang and Gadegaard, Professor Nikolaj
Authors: Perris, J., Xu, Y., Kartal, M. E., Gadegaard, N., and Mulvihill, D. M.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Tribology Letters
ISSN (Online):1573-2711
Published Online:17 July 2021
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Tribology Letters 69:106
Publisher Policy:Reproduced under a Creative Commons licence

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
302858Fundamental Mechanical Behaviour of Nano and Micro Structured InterfacesDaniel MulvihillLeverhulme Trust (LEVERHUL)RPG-2017-353ENG - Systems Power & Energy