| Autor: |
Kondratenko, L. A., Mironova, L. I. |
| Zdroj: |
Journal of Machinery Manufacture & Reliability; Dec2022, Vol. 51 Issue 6, p630-636, 7p |
| Abstrakt: |
A new numerical method is considered for studying the formation of the residual strain–stress state in pipes under plastic change of the diameters (expansion or contraction) followed by the elastic recoil. A tube section is nominally divided into 20 cylindrical layers of similar thickness. A finite increase in the inner diameter is forcibly given. Geometric changes have been found for each layer with calculation of the circumferential stress by an experimental stress diagram; then, the radial and axial stresses are calculated. Further, the expanded pipe is forcibly compressed in diameter by a predetermined value followed by calculation of the geometrical changes and stresses. The numerical experiment results converge with those obtained in real experiments. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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