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Deformation in silicon compressed by a steel ball
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-7029-1112
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0003-0910-7990
2013 (English)Conference paper, Oral presentation only (Other academic)
Abstract [en]

Most of the studies dealing with contact mechanics are focused on the pressure and the deformation at the surfaces of the contacting bodies. However, the stress and deformation in the material underneath the actual surface are also important to study. In this work, the elastic deformations arising in a silicon block that is compressed by a steel ball is studied. More precisely, an optical metrology technique is employed to obtain the deformation in the substrate at a fixed depth. A finite element based model, is also developed in order to numerically estimate the elastic deformation of the silicon block. Moreover, the deformation and corresponding stress fields are also analysed with closed form analytical solutions. Comparisons of the results obtained from the experiments, the numerical simulations and analytical solution show that a good prediction of the deformation can be obtained by the finite element model.

Place, publisher, year, edition, pages
2013.
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear) Applied Mechanics
Research subject
Machine Elements; Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-29281Local ID: 2b3de021-fc96-44ba-b74b-abb498bebf11OAI: oai:DiVA.org:ltu-29281DiVA, id: diva2:1002504
Conference
International Tribology Symposium of IFToMM : 19/03/2013 - 21/03/2013
Note
Godkänd; 2013; 20130815 (kang)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-01-14Bibliographically approved

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Kang, ShaojieAlmqvist, AndreasJonsén, Pär
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