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On the Appropriate Use of Representative Stress Quantities at Correlation of Spherical Contact Problems
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-7674-8582
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-6232-8819
2013 (English)In: Tribology letters, ISSN 1023-8883, E-ISSN 1573-2711, Vol. 50, no 2, 221-232 p.Article in journal (Refereed) Published
Abstract [en]

Correlation of contact problems is discussed in a detailed manner with focus on spherical contact. The finite element method is used to determine appropriate stress quantities, representative stresses, aiming at a general description of contact quantities such as mean contact pressure, and the size of the contact area. It is shown that the mean contact pressure can be well described by a single master curve, while this is not so for the size of the contact area. The latter feature is explained partly by a pronounced effect from elastic deformation, but is also shown that large deformation effects can have a substantial influence on correlation attempts. The analysis is restricted to classical Mises elastoplasticity, but the results can also serve as a guideline for similar attempts when using more advanced constitutive modeling. An obvious application of the present results concerns material characterization by indentation testing.

Place, publisher, year, edition, pages
2013. Vol. 50, no 2, 221-232 p.
Keyword [en]
Contact correlation, Contact pressure, Contact area, Large deformations, Mises plasticity
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-123115DOI: 10.1007/s11249-013-0114-1ISI: 000318004600010Scopus ID: 2-s2.0-84892913451OAI: oai:DiVA.org:kth-123115DiVA: diva2:624914
Note

QC 20130603

Available from: 2013-06-03 Created: 2013-06-03 Last updated: 2017-12-06Bibliographically approved

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Olsson, ErikLarsson, Per-Lennart

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