Influence of particle shape on sheared dense granular media
By A. A. Peña, R. García-Rojo, Hans Jürgen Herrmann. 2006
186 citations recorded by the source corpus.
We study by means of molecular dynamics simulations of periodic shear cells, the influence of particle shape on the global mechanical behavior of dense granular media. At large shear deformation samples with elongated particles, independent of their initial orientation, reach the same stationary value for both shear force and void ratio. At the micro-mechanical level the stress, the fabric and the inertia tensors of the particles are used to study the evolution of the media. In the case of isotropic particles the direction of the principal axis of the fabric tensor is aligned with the one of the principal stress, while for elongated particles the fabric orientation is strongly dependent on the orientation of the particles. The shear band width is shown to depend on the particle shape due to the tendency of elongated particles to preferential orientations and less rotation.
Subfields: Civil and Structural Engineering, Computational Mechanics, Management, Monitoring, Policy and Law
View Paper: https://www.semanticscholar.org/paper/99ca3b93553d99cd2a4cd13447cf1c4265f4e603
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Citations in the corpus
- 3D Shape Characterization and Image-Based DEM Simulation of the Lunar Soil Simulant FJS-1 (2009, background): “Among these properties, grain shape has a considerable influence on the bulk mechanical properties Oda and Kazama 1998; Shinohara et al. 2000; Pena et al. 2007 .”
- Stress-induced anisotropy in granular materials: fabric, stiffness, and permeability (2015, background): “This trend is consistent with experiments [26,47] and with other simulations [56,50,7].”
- 3D generation of realistic granular samples based on random fields theory and Fourier shape descriptors (2014, background): “[2–9]), polygons, ellipses [10] and polyarcs to super-ellipsoids [11–13], cylinders [14] and polyhedrons or sphero-polyhedrons [15–22].”
- 3D quantitative shape analysis on form, roundness, and compactness with μCT (2016, background): “X-ray micro-computed tomography (μCT) enables observation of particle morphology at ever-greater resolutions.”