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On the effect of substrate deformation at scratching of soft thin film composites
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).ORCID iD: 0000-0001-6232-8819
2010 (English)In: International Journal of Mechanical Sciences, ISSN 0020-7403, E-ISSN 1879-2162, Vol. 52, no 7, 1008-1014 p.Article in journal (Refereed) Published
Abstract [en]

In the present paper scratching of soft thin film/substrate structures, using sharp conical indenters, is studied theoretically and numerically. For simplicity, but not out of necessity, the material behavior of the film as well as the substrate is described by classical elastoplasticity accounting for large deformations. Explicit material parameters are chosen in order to arrive at representative results as regards material behavior and indenter geometry. The main efforts are devoted towards an understanding of the influence from the film/substrate boundary on global scratching properties at different material combinations. Global quantities to be investigated include scratch hardness, contact area and apparent coefficient of friction at scratching. The numerical investigation is performed using the finite element method (FEM) and the numerical strategy is discussed in some detail. (C) 2010 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2010. Vol. 52, no 7, 1008-1014 p.
Keyword [en]
Scratching, Film/substrate composites, Global properties, FEM analysis, Elastoplasticity
National Category
Mechanical Engineering
URN: urn:nbn:se:kth:diva-27298DOI: 10.1016/j.ijmecsci.2010.03.019ISI: 000278926900012ScopusID: 2-s2.0-77955230059OAI: diva2:376904
QC 20101213Available from: 2010-12-13 Created: 2010-12-09 Last updated: 2010-12-13Bibliographically approved

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Wredenberg, FredrikLarsson, Per-Lennart
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