Influence of mesh orientation in discrete element method simulations of fracture processes
| Autor: | Gabriel Birck, Jorge D. Riera, Ignacio Iturrioz, Letícia F. F. Miguel |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Tensile fracture Applied Mathematics Mechanical Engineering 0211 other engineering and technologies 02 engineering and technology Mechanics Discrete element method Lattice (module) 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Modeling and Simulation Orientation (geometry) Fracture (geology) Errors-in-variables models Pre and post 021101 geological & geomatics engineering |
| Zdroj: | The Journal of Strain Analysis for Engineering Design. 53:400-407 |
| ISSN: | 2041-3130 0309-3247 |
| DOI: | 10.1177/0309324718775284 |
| Popis: | The lattice discrete element method was employed by the authors in numerical determinations of the pre and post peak-failure response of quasi-brittle systems in which tensile fracture typically controls the dominant failure modes. In previous publications, the approach has also been applied to structures that fail by shear or unconfined compression. It was also verified that discrete element method models predict the strength of cubic and cylindrical samples subjected to confining lateral pressures up to about 20% of the vertical stress, although overestimating the effect of confinement. One of the factors responsible for this overestimation may be associated to the restraints on the fracture paths introduced by numerical methods such as discrete element method or finite element method . In order to determine a bound on model error in discrete element method numerical predictions, in this article, the influence of the mesh orientation on simulations of fracture propagation in quasi-brittle materials is examined in case of a plate subjected to a nominally homogeneous stress state. |
| Databáze: | OpenAIRE |
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