- Tytuł:
- Numerical Model of Solidification Including Formation of Multiple Shrinkage Cavities
- Autorzy:
-
Skrzypczak, T.
Sowa, L.
Węgrzyn-Skrzypczak, E. - Powiązania:
- https://bibliotekanauki.pl/articles/379500.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
solidification process
castings defects
shrinkage cavity
numerical simulation
finite element method
proces krzepnięcia
wady odlewów
ubytki skurczowe
symulacja numeryczna
metoda elementów skończonych - Opis:
- Presented paper shows the mathematical and numerical approaches for modelling of binary alloy solidification solved by the Finite Element Method (FEM). The phenomenon of shrinkage cavities formation process is included in the numerical model. Multiple macroscopic cavities can be modelled within the single casting volume. Solid, liquid and gaseous phases with different material properties are taken into account during solidification process. Mathematical model uses the differential equation of heat diffusion. Modification of specific heat is used to describe the heat releasing during liquid-solid phase change. Numerical procedure of shrinkage cavities evolution is based on the recognition of non-connected liquid volumes and local shrinkage computation in the each of them. The recognition is done by the selection of sets of interconnected nodes containing liquid phase in the finite element mesh. Original computer program was developed to perform calculation process. Obtained results of temperature and shrinkage cavities distributions are presented and discussed in details.
- Źródło:
-
Archives of Foundry Engineering; 2020, 20, 1; 37-42
1897-3310
2299-2944 - Pojawia się w:
- Archives of Foundry Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł