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- W2040679 abstract "AbstractThe contribution gives an overview on a discrete element model with polygonal particles in a two-dimensional setting allowing the simulation of granular as well as quasi-brittle material response. It briefly describes the basic formulation for geometry and applied contact models in normal and tangential direction, supplemented by friction on a background plate. Special emphasis is put on modeling of cohesion; three different models with an increasing complexity are introduced, namely an overlay brittle beam lattice, a beam with damage and an interface model. Homogenization of the discrete particle response is utilized deriving variables like stresses and strains for an interpretation in the context of classical and micropolar continua. Several numerical examples for different loading scenarios are added, among them the simulation of a quasi-brittle material sample with a heterogeneousmicrostructure. In addition conceptual small scale experimentswith regular particles of steel nuts have been performed; results from tests and simulations for samples with and without cohesion are compared.KeywordsShear BandDiscrete ElementRepresentative Volume ElementDiscrete Element MethodDiscrete Element ModelThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves." @default.
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- W2040679 date "2011-01-01" @default.
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- W2040679 title "On Material Modeling by Polygonal Discrete Elements" @default.
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- W2040679 doi "https://doi.org/10.1007/978-94-007-0735-1_6" @default.
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