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Granular materials
Granular materials are ubiquitous in nature and technology. Nevertheless, no macroscopic equation for granular materials is known. The discrete element method (DEM) has been widely used to simulate complex behavior of granular materials without constitutive laws. In the last years, it has become increasingly clear that the dynamics (competition between rolling and sliding) of non-spherical granular materials is governed essentially by the deviations of the particle shape from ideal spheres, i.e. by the roughness and by the elongation. Up to now, among most of the simulations for round particles, a few DEM code modeled the particles with polyhedral shape while the contact force by the penetration depth which essentially is the same as for round particles. With the polyhedral DEM code, a larger phenomenology is (hopefully) accessible than either with round particles or with penetration-depth based force models.
Granular materials
Granular materials are ubiquitous in nature and technology. Nevertheless, no macroscopic equation for granular materials is known. The discrete element method (DEM) has been widely used to simulate complex behavior of granular materials without constitutive laws. In the last years, it has become increasingly clear that the dynamics (competition between rolling and sliding) of non-spherical granular materials is governed essentially by the deviations of the particle shape from ideal spheres, i.e. by the roughness and by the elongation. Up to now, among most of the simulations for round particles, a few DEM code modeled the particles with polyhedral shape while the contact force by the penetration depth which essentially is the same as for round particles. With the polyhedral DEM code, a larger phenomenology is (hopefully) accessible than either with round particles or with penetration-depth based force models.
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COMPUTERS AND GEOTECHNICS (2024): 105855-105855
COMPUTERS AND GEOTECHNICS (2023): 105812-105812
Tectonophysics (2023): 229963
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Epj Web of Conferences (2021): 14005
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