A contact dynamics approach to the granular element method

Title: A contact dynamics approach to the granular element method
Creator: Lim, Keng-Wit; Krabbenhoft, Kristian; Andrade, José E.
Relation: Computer Methods in Applied Mechanics and Engineering Vol. 268, p. 557-573
Publisher Link: http://dx.doi.org/10.1016/j.cma.2013.10.004
Publisher: Elsevier
Resource Type: journal article
Date: 2014
Description: We present a contact dynamics (CD) approach to the Granular Element Method (GEM) Andrade et al. (2012) [1], abbreviated here as CD–GEM. By combining particle shape flexibility through Non-Uniform Rational Basis Splines, properties of implicit time-integration discretization (e.g., larger time steps) and non-penetrating constraints, as well as a reduction to a static formulation in the limit of an infinite time step, CD–GEM targets system properties and deformation regimes in which the classical discrete element method either performs poorly or simply fails; namely, in granular systems comprising of rigid or highly stiff angular particles and subjected to quasi-static or intense dynamic flow conditions. The integration of CD and GEM is made possible while significantly simplifying implementation and maintaining comparable performance with existing CD approaches.
Subject: discrete element method; granular element method; contact dynamics; NURBS
Identifier: http://hdl.handle.net/1959.13/1061043
Identifier: uon:16865
Identifier: ISSN:0045-7825
Language: eng
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