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Wyświetlanie 1-2 z 2
Tytuł:
Influence of 3d Model Geometry on Dimensional and Shape Characteristics in Additive Manufacturing
Autorzy:
Tagowski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2106565.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
additive manufacturing
3d printing
3d modelling
CAx
Opis:
Quality of 3d model in simple way translates into quality of final product, obtained from 3d printing. 3d CAx software give possibility to create enormous number of shapes - doesn’t matter solids or surfaces. The question is where is the frontier between quality of 3d model and a value for money of the completed print? Is it always necessary to create as good model as possible? This paper will focus on preparation of 3d models, based on primitives and will show connection between quality of mesh, its size and deviations and quality of obtained samples, in same manufacturing conditions.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 2; 391--396
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two-dimensional analogies to the deformation characteristics of a falling droplet and its collision
Autorzy:
Rafi, Abid Hasan
Haque, Mohammad Rejaul
Ahmed, Dewan Hasan
Powiązania:
https://bibliotekanauki.pl/articles/2065760.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
droplet
freefall
spreading
drag force
kropelka
swobodny spadek
siła tarcia
Opis:
The present study investigates the 2D numerical analogies to the changes of the droplet shapes during the freefall for a wide range of droplet sizes through the stagnation air. The freefall velocity, shape change due to frictional force during free-fall is studied for different considered cases. With the elapse of time, a droplet with a larger initial diameter is changing its original shape more compared to droplets with a smaller diameter. In addition, the spreading of the droplet during the freefall seems more rapid for the larger-diameter droplet. When a droplet with an initial diameter of 15 mm starts to fall with gravitational force, the diameter ratio is decreasing for droplets with higher density and surface tension while droplets having lower density and surface tension show a diameter ratio greater than one. The spreading and splashing of the droplet on a solid surface and liquid storage at the time of impact are much influenced by the freefall memories of the droplet during the freefall from a certain height. These freefall memories are influenced by the fluid properties, drag force, and the freefall height. However, these freefall memories eventually regulate the deformation of the droplet during the freefall.
Źródło:
Archive of Mechanical Engineering; 2022, LXIX, 1; 21--43
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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