- Tytuł:
- Numerical simulation of deformation and fragmentation of fractal-like nanoaggregates
- Autorzy:
-
Żywczyk, Łukasz
Moskal, Arkadiusz
Przekop, Rafał - Powiązania:
- https://bibliotekanauki.pl/articles/185230.pdf
- Data publikacji:
- 2019
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
fractal-like aggregate
discrete element modelling
fragmentation
restructuration
agregat fraktalny
modelowanie elementów dyskretnych
podział
restrukturyzacja - Opis:
- Aflexible fractal-like aggregate modelwas used to study deformation and fragmentation of the structure of fractal-like aggregates via their impaction with rigid rough surface.Aggregateswere conveyed one at the time towards a surface under vacuum conditions. The number of primary particles remaining in each fragment, ratio of average fragment radius of gyration after impaction to the average fragment initial radius of gyration and ratio of average coordination number to the initial coordination number were monitored for each individual aggregate. Results demonstrate that depending on the impact velocity, the fractal dimension of the aggregate, the strength of bonds between primary particles, the stiffness of the aggregate structure and the diameter of primary particle composing an aggregate, restructuring or breakage of the aggregate occur. Moreover, in the analysis of the ratio of coordination number of aggregates after impaction to the initial coordination number, three regimes were distinguished: first no deformation at low impact velocities, second restructurisation regime and finally fragmentation regime where partial or total fragmentation of aggregates was observed.
- Źródło:
-
Chemical and Process Engineering; 2019, 40, 4; 377--397
0208-6425
2300-1925 - Pojawia się w:
- Chemical and Process Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł