On the tangential contact behavior at elastic–plastic spherical contact problems
2014 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 319, no 1/2, 110-117 p.Article in journal (Refereed) Published
The problem of tangential contact between an elastic-plastic sphere and a rigid plane is studied analytically and numerically with the specific aim to derive force-displacement relations to be used in numerical simulations of granular materials. The simulations are performed for both ideal-plastic and strain hardening materials with different yield stresses and including large deformation effects in order to draw general conclusions. The results are correlated using normalized quantities pertinent to the correlation of indentation testing experiments leading to a general description of the tangential contact problem. Explicit formulas for the normal and tangential forces are presented as a function of the tangential displacement using data that are easily available from axi-symmetric analyses of spherical contact. The proposed model shows very good agreement when compared with the FE-simulations.
Place, publisher, year, edition, pages
2014. Vol. 319, no 1/2, 110-117 p.
Spherical contact, Powder compaction, Shear stresses, Finite element simulations, Elastic-plastic materials, Mises plasticity
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-159081DOI: 10.1016/j.wear.2014.07.016ISI: 000345061600012ScopusID: 2-s2.0-84907682156OAI: oai:DiVA.org:kth-159081DiVA: diva2:782381
QC 201502222015-01-212015-01-212015-01-22Bibliographically approved