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Wyszukujesz frazę "cold steel" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Classification of restraints in the optimization problem of a cold-formed profile
Autorzy:
Łukowicz, A.
Urbańska-Galewska, E.
Deniziak, P.
Gordziej-Zagórowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/102933.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
steel structures
thin-walled elements
cold-formed sections
Opis:
This work describes the restraints in the optimization problem. This is an important and complicated issue because it requires taking into account a vast range of information related to the design and production. In order to describe the relations of a specific optimization problem, it is essential to adopt appropriate criteria and to collect information on all kinds of restraints, i.e. boundary conditions. The following paper verifies the various restraints and defines three subsets: design assumptions, technological limitations and standard conditions. The provided classification was made with reference to the analysis of the construction applicability of the newly patented cold-formed profile.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 28; 61-67
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flow stress model for cold-formed 40HM constructional steel
Autorzy:
Dziubińska, A.
Gontarz, A.
Winiarski, G.
Powiązania:
https://bibliotekanauki.pl/articles/102822.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
flow stress
42CrMo4 constructional steel
cold forming
Opis:
The paper presents the results of research undertaken to investigate cold forming process for 40HM constructional steel suitable for heat treatment. In the first part of the paper, mechanical properties of this steel and its industrial applications are described. The second part of the paper presents the results of the analysis of flow curves for two kinds of steel specimens: those that were subjected to annealing and those that did not undergo any heat treatment. It was found that the application of heat treatment had a significant effect on improving the forming conditions for this steel at room temperature. The experimental flow curves obtained in a compression test were described by constitutive equations illustrating the dependence between flow stresses and strain value. In order to determine the equation coefficients, the Generalized Reduced Gradient method implemented in Microsoft Excel was used. Based on the obtained equations, a material model will be developed to perform numerical simulations of cold forming for 40HM steel, using FEM-based software that aids the design of metal forming technologies.
Źródło:
Advances in Science and Technology. Research Journal; 2014, 8, 21; 31-35
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis of a forging process for producing a hollow ball from tube
Autorzy:
Samołyk, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/102575.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
hollow ball
die forging
cold forming
19MnCr5 steel
wydrążona kula
matrycowanie
formowanie na zimno
stal 19MnCr5
Opis:
The paper presents the results of a numerical analysis (by FEM) of a new forging process for producing a hollow ball with an outside diameter of 30 mm and a wall thickness of 4.4 mm. It was assumed that the ball forging would be cold formed from hollow billet (tube) made of 19MnCr5 steel. The effect of billet dimensions (diameter, height and wall thickness) on the forming process was investigated, which led to identification of basic shape defects and determination of the billet dimensions required for producing balls of the desired geometry. The ball forming conditions, including force parameters of the process, are thoroughly investigated.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 3; 150-157
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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