Study of triaxial loading of segregated granular assemblies through experiments and DEM simulations
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916259397894144 |
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| author | Pola, Venkata Rama Manoj Annabattula, Ratna Kumar |
| author_facet | Pola, Venkata Rama Manoj Annabattula, Ratna Kumar |
| contents | A simple position-dependent body force-based confinement for simulating triaxial tests using the Discrete Element Method is presented. The said method is used to perform triaxial simulations on mono-disperse and segregated assemblies of glass spheres. The macroscopic load response obtained in simulations is validated with experimental load response. A mesh construction algorithm is presented to check whether the confinement applied in the triaxial simulations is accurate. The particle displacement data obtained from triaxial simulations are used to obtain a particle-wise average strain tensor. This is further used to compare the strain localisation between the mono-disperse and segregated assemblies. It is observed that, in the segregated assembly, the interface between the two particle phases acts as a barrier for strain localisation, and the smaller particles preferentially undergo a higher degree of shear strain on average. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_15720 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Study of triaxial loading of segregated granular assemblies through experiments and DEM simulations Pola, Venkata Rama Manoj Annabattula, Ratna Kumar Soft Condensed Matter A simple position-dependent body force-based confinement for simulating triaxial tests using the Discrete Element Method is presented. The said method is used to perform triaxial simulations on mono-disperse and segregated assemblies of glass spheres. The macroscopic load response obtained in simulations is validated with experimental load response. A mesh construction algorithm is presented to check whether the confinement applied in the triaxial simulations is accurate. The particle displacement data obtained from triaxial simulations are used to obtain a particle-wise average strain tensor. This is further used to compare the strain localisation between the mono-disperse and segregated assemblies. It is observed that, in the segregated assembly, the interface between the two particle phases acts as a barrier for strain localisation, and the smaller particles preferentially undergo a higher degree of shear strain on average. |
| title | Study of triaxial loading of segregated granular assemblies through experiments and DEM simulations |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2405.15720 |