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Meeting the Contact-Mechanics Challenge
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2017 (English)In: Tribology letters, ISSN 1023-8883, E-ISSN 1573-2711, Vol. 65, no 4, article id 118Article in journal (Refereed) Published
Abstract [en]

This paper summarizes the submissions to a recently announced contact-mechanics modeling challenge. The task was to solve a typical, albeit mathematically fully defined problem on the adhesion between nominally flat surfaces. The surface topography of the rough, rigid substrate, the elastic properties of the indenter, as well as the short-range adhesion between indenter and substrate, were specified so that diverse quantities of interest, e.g., the distribution of interfacial stresses at a given load or the mean gap as a function of load, could be computed and compared to a reference solution. Many different solution strategies were pursued, ranging from traditional asperity-based models via Persson theory and brute-force computational approaches, to real-laboratory experiments and all-atom molecular dynamics simulations of a model, in which the original assignment was scaled down to the atomistic scale. While each submission contained satisfying answers for at least a subset of the posed questions, efficiency, versatility, and accuracy differed between methods, the more precise methods being, in general, computationally more complex. The aim of this paper is to provide both theorists and experimentalists with benchmarks to decide which method is the most appropriate for a particular application and to gauge the errors associated with each one..

Place, publisher, year, edition, pages
Springer New York LLC , 2017. Vol. 65, no 4, article id 118
Keywords [en]
Adhesion, Contact mechanics, Modeling, Nominally flat surfaces
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
URN: urn:nbn:se:ri:diva-56331DOI: 10.1007/s11249-017-0900-2Scopus ID: 2-s2.0-85027683051OAI: oai:DiVA.org:ri-56331DiVA, id: diva2:1591324
Note

 Funding details: National Science Foundation, NSF, 1411144; Funding details: Spencer Foundation; Funding details: Ontario Centres of Excellence, AC2T; Funding details: National Centre for Supercomputing Applications; Funding details: Engineering and Physical Sciences Research Council, EPSRC, EP/E057985/1, EP/N025954/1; Funding details: National Stroke Foundation; Funding details: Austrian Science Fund, 849109; Funding text 1: Acknowledgements MHM thanks Wilfred Tysoe and Nicholas Spencer for indispensible support in the execution and the write-up of the contact-mechanics challenge. MHM and WBD thank the Jülich Supercomputing Centre for computing time on JUQUEEN. The contribution of GV and AV was funded by the Austrian COMET-Program (Project XTribology, No. 849109), and the work was carried out at the ‘‘Excellence Centre of Tribology’’ (AC2T research GmbH). MOR was supported by the NSF through Grant 1411144.

Available from: 2021-09-06 Created: 2021-09-06 Last updated: 2023-05-23Bibliographically approved

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Harris, Kathryn L

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