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Wyszukujesz frazę "SPH method" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Cutting force prediction of Ti6Al4V using a machine learning model of SPH orthogonal cutting process simulations
Autorzy:
Klippel, Hagen
Sanchez, Eduardo Gonzalez
Isabel, Margolis
Röthlin, Matthias
Afrasiabi, Mohamadreza
Michal, Kuffa
Wegener, Konrad
Powiązania:
https://bibliotekanauki.pl/articles/2052187.pdf
Data publikacji:
2022
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
machining
Ti6Al4V
machine learning
SPH
smoothed particle hydrodynamics
meshfree method
Opis:
The prediction of machining processes is a challenging task and usually requires a large experimental basis. These experiments are time-consuming and require manufacturing and testing of different tool geometries at various process conditions to find optimum machining settings. In this paper, a machine learning model of the orthogonal cutting process of Ti6Al4V is proposed to predict the cutting and feed forces for a wide range of process conditions with regards to rake angle, clearance angle, cutting edge radius, feed and cutting speed. The model uses training data generated by virtual experiments, which are conducted using physical based simulations of the orthogonal cutting process with the smoothed particle hydrodynamics (SPH). The ML training set is composed of input parameters, and output process forces from 2500 instances of GPU accelerated SPH simulations. The resulting model provides fast process force predictions and can consider the cutter geometry in comparison to classical analytical approaches.
Źródło:
Journal of Machine Engineering; 2022, 22, 1; 111-123
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Ballistic Resistance of Composites with EN AW-7075 Matrix Reinforced with Al2O3 Particles
Autorzy:
Kurzawa, A.
Pyka, A.
Jamroziak, K.
Powiązania:
https://bibliotekanauki.pl/articles/379988.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
composite materials
ballistic resistance
finite element method
FEM
smoothed particle hydrodynamics
SPH
materiały kompozytowe
odporność balistyczna
metoda elementów skończonych
MES
Opis:
The paper presents the results of experimental-numerical tests of firing at aluminum composite materials. The test materials were manufactured by pressure infiltration of porous ceramic preforms made of α-Al2O3 particles in the amount of 30% and 40% by volume. The EN AW-7075 alloy was chosen as the material matrix, and the steel 7.62×39 mm (M 43) FMJ (Full Metal Jacket) intermediate ammunition was selected for firing. In the result of the experiment, the samples were perforated with a clear difference in the muzzle diameter. The projectile with fragments caused damage to up to three reference plates placed behind the samples (witness plates) in composites with 40% of particles by volume. The mechanics of crack propagation during ballistic impacts of the projectile was characterized based on microstructure studies. Then, using numerical analysis of impact load, the examination of composite materials puncture in the ABAQUS environment was carried out. The Finite Element Method (FEM) was employed for the discretization of geometric models using Hex elements. The Johnson-Cook constitutive model describing the relationship between stress and strain in metal-ceramic composites was applied for the analyses. Numerical models were then subjected to numerical verification using smoothed particle hydrodynamics (SPH). Based on the obtained results, it was found that the hybrid FEM/SPH method correlates significantly with the experimental results.
Źródło:
Archives of Foundry Engineering; 2020, 20, 1; 73-78
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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