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Towards a mechanistic contact model for elastoplastic particles at high relative densities
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmacy.
2015 (English)In: Finite elements in analysis and design (Print), ISSN 0168-874X, Vol. 104, 56-60 p.Article in journal (Refereed) Published
Abstract [en]

Triaxial compression of elastoplastic particles was studied with numerical and analytical methods in order to develop a mechanistic model for their interactions at high relative densities. The introduction of an equivalent particle radius that accounted for the elastic volumetric deformation enabled an almost perfect reduction of the results obtained for elastoplastic particles to those obtained for rigid, perfectly plastic ones. This, in turn, made possible a simplified yet mechanistic analytical analysis of the particle response in terms of the contact area, pressure and force. The developed model exhibited a good agreement with the numerical results, especially for intermediate and large strains, and hence laid the foundations for the development of mechanistic contact models suitable for simulations of granular materials at high relative densities with the Discrete Element Method (DEM).

Place, publisher, year, edition, pages
2015. Vol. 104, 56-60 p.
Keyword [en]
Contact model, High relative density, Granular material, Finite element method, Discrete element method
National Category
URN: urn:nbn:se:uu:diva-260593DOI: 10.1016/j.finel.2015.06.002ISI: 000358264300006OAI: oai:DiVA.org:uu-260593DiVA: diva2:848539
Swedish Research Council, 621-2011-4049
Available from: 2015-08-25 Created: 2015-08-21 Last updated: 2015-08-25Bibliographically approved

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Frenning, Goran
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Department of Pharmacy
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