Three-dimensional spherical discontinuous deformation analysis using second-order cone programming

Title: Three-dimensional spherical discontinuous deformation analysis using second-order cone programming
Creator: Meng, Jingjing; Cao, Ping; Huang, Jinsong; Lin, Hang; Li, Kaihui; Cao, Rihong
Relation: Computers and Geotechnics Vol. 112, Issue August 2019, p. 319-328
Publisher Link: http://dx.doi.org/10.1016/j.compgeo.2019.04.023
Publisher: Elsevier
Resource Type: journal article
Date: 2019
Description: In this paper, a new formulation of three-dimensional spherical discontinuous deformation analysis (DDA) based on second-order cone programming has been proposed. Artificial springs with open-close iteration used in classic DDA have been removed, given that improper stiffness parameters might cause numerical problems. Furthermore, to account for irregular granular shapes, a rolling resistance model is incorporated in the variational formulation. The proposed formulation can be cast into a standard second-order cone programming program, which can be solved using efficient off-the-shelf optimisation solvers. The proposed approach is validated by a series of numerical examples.
Subject: discontinuous deformation analysis; second-order cone programming; contact problems; discrete element method; mathematical programming
Identifier: http://hdl.handle.net/1959.13/1451793
Identifier: uon:44272
Identifier: ISSN:0266-352X
Language: eng
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