| Autor: |
Markov, Oleg E., Aliiev, Igramotdin S., Aliieva, Leila I., Hrudkina, Natalia S. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Technology & Metallurgy; 2020, Vol. 55 Issue 3, p640-648, 9p |
| Abstrakt: |
A stress-strain state and a resize of an axial defect during upsetting have been studied in the article. Theoretical research based on a FEM has been conducted. We upsetted cylindrical steel workpieces which had the axial defect equal to 10 % of the workpiece diameter. Upsetting has been carried out by flat, concave-conical and convex plates (solid or with hole). The results of the study show that a ratio of dimensions has the main influence on the workpiece shape. The maximal closure of the axial defect is provided with upsetting by concave-conical solid plates. Upsetting by flat plates does not provide the closure of axial defects. Convex plates provide the uniform stress-strain state along the workpiece cross section. The hole in the plates increases the non-uniformity of strain distribution and also does not provide the axial defects closure. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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