Simulation of the strain distribution under a two-dimensional sand pile
- We study the averaged macroscopic strain tensor for a sand pile consisting of soft convex polygonal particles numerically, using the discrete-element method (DEM). First, we construct two types of "sand piles" by two different pouring protocols. Afterwards, we deform the sand piles, relaxing them under a 10% reduction of gravity. Four different types of methods, three best-fit strains and a derivative strain, are adopted for determining the strain distribution under a sand pile. The results of four different versions of strains obtained from DEM simulation are compared with each other. Moreover, we compare the vertical normal strain tensor between two types of sand piles qualitatively and show how the construction history of the piles affects their strain distribution.
| Author details: | Pradip Roul, Alexander Schinner, Klaus Kassner |
|---|---|
| DOI: | https://doi.org/10.1016/j.powtec.2011.08.039 |
| ISSN: | 0032-5910 |
| Title of parent work (English): | Powder technology : an international journal on the science and technology of wet and dry particulate systems |
| Publisher: | Elsevier |
| Place of publishing: | Lausanne |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2011 |
| Publication year: | 2011 |
| Release date: | 2017/03/26 |
| Tag: | Discrete-element method; Granular matter; Numerical simulation; Sand pile; Strain; Stress |
| Volume: | 214 |
| Issue: | 3 |
| Number of pages: | 9 |
| First page: | 406 |
| Last Page: | 414 |
| Funding institution: | German Science Foundation (DFG); Land Sachsen-Anhalt within the graduate school [GK 828] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Mathematik |
| Peer review: | Referiert |
