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The influence of sample generation and model resolution on mechanical properties obtained from DEM simulations by Marcelo De Simone; Elias Lozano; Deane Roehl is a Engineering article available to read on EtoBox.

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The discrete element method (DEM) is a numerical technique to simulate the mechanical behavior of a system of particles. Each particle is identified with a representative shape and size that interacts with other particles according to a contact model. Two important steps in modeling with DEM are defining model resolution (ratio of sample smallest dimension to average particle size) and sample generation. Some values of model resolution are proposed in the literature for simulations of different laboratory tests. In this study, values for model resolution are obtained for the uniaxial compressive test (UCT) simulations. Ten realizations for each scenario of model resolution were created to investigate its influence on the properties obtained by the UCT simulations. The values we suggest for model resolution are the ones with a good tradeoff between computational effort and property variations obtained by the DEM simulations. There are several methods for sample generation, considering a static or a dynamic approach. After comparing different techniques, a sample generation method is proposed, where a static algorithm is combined with a dynamic procedure. This generation technique is

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Author

Marcelo De Simone; Elias Lozano; Deane Roehl

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Engineering (Physical Sciences)