Two highly-ordered global structures observed in packed beds of balls inside vibrated cylinder: Experiment and modelling of layers
Artykuł w czasopiśmie
MNiSW
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| Status: | |
| Autorzy: | Polak Wiesław, Pałka Krzysztof, Guz Łukasz |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2025 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 451 |
| Numer artykułu: | 120453 |
| Web of Science® Times Cited: | 0 |
| Scopus® Cytowania: | 0 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | The publication was financed in the framework of the pro-quality program of Lublin University of Technology: “Grants for financing the costs of interdisciplinary high-scoring publication” (Grant No. 5/IP/2022). The CT measurements were made using the equipment purchased in the framework of the agreement no. POIR.04.02.00–00-D009/20 “Development of modern research infrastructure of the science sector; Priority axis: Increasing scientific and research potential". |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| During the vibration of plastic balls put into a cylinder three basic global orderings of the packed beds of balls were observed. Computed microtomography measurements enabled to determine coordinates of all balls. Internal layers and their structure in crystallized beds were studied and a model was developed to predict the radii of the layers. Structural analysis, based on the Coordination Polyhedron method, was used to identify all regular local structural units present in the bed: face-centred cubic (fcc), hexagonal close-packed (hcp), icosahedral (ico) and decahedral (dec). Two already-observed global structures, namely: random loose packing (RLP) and hexagonal layer (HL) with horizontal rows of balls, were investigated in detail. The third one, called columnar structure here, was found during the experiment and has the HL structure with vertical rows of balls. Its internal structure is highly ordered, composed of regularly-spaced columns of atoms with characteristic linear chains of non-crystalline dec units. |
