Effects of particle angularity on granular self-organization
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866916912591536128 |
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| author | Krengel, Dominik Jiang, Haoran Matsushima, Takashi Blumenfeld, Raphael |
| author_facet | Krengel, Dominik Jiang, Haoran Matsushima, Takashi Blumenfeld, Raphael |
| contents | Recent studies of two-dimensional poly-disperse disc systems revealed a coordinated self-organisation of cell stresses and shapes, with certain distributions collapsing onto a master form for many processes, size distributions, friction coefficients, and cell orders. Here we examine the effects of grain angularity on the indicators of self-organisation, using simulations of bi-disperse regular $N$-polygons and varying $N$ systematically. We find that: the strong correlation between local cell stresses and orientations, as well as the collapses of the conditional distributions of scaled cell stress ratios to a master Weibull form for all cell orders $k$, are independent of angularity and friction coefficient. In contrast, increasing angularity makes the collapses of the conditional distributions sensitive to changes in the friction coefficient. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_06085 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Effects of particle angularity on granular self-organization Krengel, Dominik Jiang, Haoran Matsushima, Takashi Blumenfeld, Raphael Soft Condensed Matter Recent studies of two-dimensional poly-disperse disc systems revealed a coordinated self-organisation of cell stresses and shapes, with certain distributions collapsing onto a master form for many processes, size distributions, friction coefficients, and cell orders. Here we examine the effects of grain angularity on the indicators of self-organisation, using simulations of bi-disperse regular $N$-polygons and varying $N$ systematically. We find that: the strong correlation between local cell stresses and orientations, as well as the collapses of the conditional distributions of scaled cell stress ratios to a master Weibull form for all cell orders $k$, are independent of angularity and friction coefficient. In contrast, increasing angularity makes the collapses of the conditional distributions sensitive to changes in the friction coefficient. |
| title | Effects of particle angularity on granular self-organization |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2502.06085 |