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Wyszukujesz frazę "modelowanie termomechaniczne" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Finite element analysis of thermal stress in Cu2O coating synthesized on Cu substrate
Autorzy:
Shorinov, O.
Powiązania:
https://bibliotekanauki.pl/articles/24200560.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
stress-strain state
residual stress
oxide layers
thermo-mechanical modelling
coefficient of thermal expansion
stan naprężenie-odkształcenie
naprężenie szczątkowe
warstwy tlenkowe
modelowanie termomechaniczne
współczynnik rozszerzalności cieplnej
Opis:
Purpose: The paper aims to find the magnitude and nature of thermal residual stresses that occur during cooling of a copper sample with a thermally synthesized oxide layer of Cu2O. Design/methodology/approach: Thermo-mechanical analysis was performed by the finite element method using Ansys Software. The results of thermal analysis were used to study the resulting stress-strain state of the thin film/coating system after cooling. Findings: Based on the modeling results, the paper determined the most stress-strain areas of the sample with a coating, which are the free edges of the interfaces between the copper substrate and the Cu2O oxide layer. Research limitations/implications: The main limitations of the study are the use of certain simplifications in the condition setup, for instance, uniform cooling of the thin film/coating system, homogeneity and isotropy of substrate and thin film materials, invariance of their properties with temperature changes, etc. Practical implications: The results obtained can be used to control the stress-strain state of the thin film/coating system and prevent deformations and destruction of thin-film structures during their production and operation of products with them. Originality/value: The study of new promising methods for the formation of oxide nanostructures, for instance in a plasma environment, requires a sufficient theoretical basis in addressing the origin and development of stresses.
Źródło:
Archives of Materials Science and Engineering; 2022, 115, 2; 58--65
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of mathematical and numerical models for the analysis of overlap laser beam welding of dissimilar materials
Autorzy:
Domański, Tomasz
Piekarska, Wiesława
Saternus, Zbigniew
Kubiak, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/2175526.pdf
Data publikacji:
2022
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
mathematical modelling
numerical modelling
dissimilar materials
laser welding
thermomechanical phenomena
modelowanie matematyczne
modelowanie numeryczne
materiały różnoimienne
spawanie laserowe
zjawiska termomechaniczne
Opis:
The welding process of dissimilar materials causes a lot of technological issues related to different properties of materials of joined elements. Thermal conductivity is one of most important factors influencing the deformation of the weld. The change of thermal conductivity in the function of the temperature can produce various strains that cannot be predicted during construction design. Different structures of materials appear during joining of dissimilar materials as well as different characteristic zones of the joint and its mechanical properties. The most important is the proper identification of joint zones and the size of deformation at the production stage of welded construction. This work presents the numerical analysis of physical phenomena in overlap welding of two sheets made of S355 carbon steel and 304 austenitic steel using a laser beam. A three-dimensional discrete model is developed taking into account thermophysical properties changing with temperature. Temperature distribution and the shape of the welding pool is predicted on the basis of performer computer simulations. The influence of thermal load on the formation of stress and strain fields is determined.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2022, 21, 2; 15--26
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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