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Discrete element analysis of density dependency of granular materials under different directions of true triaxial cyclic loading |
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| รหัสดีโอไอ | |
| Creator | Daraporn Phusing |
| Title | Discrete element analysis of density dependency of granular materials under different directions of true triaxial cyclic loading |
| Contributor | Korchoke Chantawarangkul, Pulpong Pongvithayapanu |
| Publisher | Asia-Pacific Journal of Science and Technology |
| Publication Year | 2566 |
| Journal Title | Asia-Pacific Journal of Science and Technology |
| Journal Vol. | 28 |
| Journal No. | 6 |
| Page no. | 12 |
| Keyword | Cyclic loading, Density, DEM, Granular materials, True triaxial loading |
| URL Website | https://www.tci-thaijo.org/index.php/APST |
| Website title | https://so01.tci-thaijo.org/index.php/APST/article/view/250210 |
| ISSN | 2539-6293 |
| Abstract | This paper introduces the macro and micro response behaviors of dense, medium, and loose samples of granular materials where the initial void ratio eo was 0.57, 0.67, and 0.73, respectively, under five different directions of true triaxial cyclic loading tests using the discrete element method (DEM). The experimental results with similar cyclic stress paths were applied to validate the DEM results. The results showed variations in the principal stress-strain relationship as well as the strain increment vector of each sample in the 1st and 5th cycles. There was a qualitative similarity between the strain increment vectors for the experimental results and the DEM. The micro response analysis indicated that there were substantial differences in the coordination number as well as the sliding contact fraction of all samples under different directions of cyclic testing. At the macro-micro level, the stress ratio and fabrics of the strong contact forces presented strong unity even under different directions of the cyclic principal stresses, which increased with the number of cycles. However, there was only one weak unity for the different levels of density. |
