%0 Book Section %1 schneider2011material %A Schneider, Benjamin %A D'Addetta, Gian Antonio %A Ramm, Ekkehard %B E. Onate, D.R.J. Owen (eds.): Particle-Based Methods. Fundamentals and Applications. Springer, Dordrecht %D 2011 %K incollection ibb DEM from:maltevonscheven %P 159-185 %T On material modeling by polygonal discrete elements %X The 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 heterogeneous microstructure. In addition conceptual small scale experiments with regular particles of steel nuts have been performed; results from tests and simulations for samples with and without cohesion are compared.

@incollection{schneider2011material, abstract = {The 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 heterogeneous microstructure. In addition conceptual small scale experiments with regular particles of steel nuts have been performed; results from tests and simulations for samples with and without cohesion are compared.}, added-at = {2021-03-09T13:40:58.000+0100}, author = {Schneider, Benjamin and D'Addetta, Gian Antonio and Ramm, Ekkehard}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2b9ab1bffefedb5ae9c80e846b1d19ef7/ibb-publication}, booktitle = {E. Onate, D.R.J. Owen (eds.): Particle-Based Methods. Fundamentals and Applications. Springer, Dordrecht}, interhash = {3064d8119b51131a3fc623ccce73a7e5}, intrahash = {b9ab1bffefedb5ae9c80e846b1d19ef7}, keywords = {incollection ibb DEM from:maltevonscheven}, pages = {159-185}, timestamp = {2021-03-09T12:40:58.000+0100}, title = {On material modeling by polygonal discrete elements}, year = 2011 }