| Autor: |
Makhnenko, O. V., Milenin, O. S., Velykoivanenko, O. A., Rozynka, G. P., Pivtorak, N. I. |
| Předmět: |
|
| Zdroj: |
Paton Welding Journal; 2021, Issue 1, p29-34, 6p |
| Abstrakt: |
Expert analysis of the reliability and performance of welded pipelines with detected corrosion-erosion damage under ultra-low-cycle loading requires taking into account several interrelated physicomechanical phenomena, which determine the limiting state of a specific structure. For this purpose, integrated numerical procedure was developed in this study for finite-element assessment of subcritical fracture accumulation and prediction of the limiting state of typical pipelines with 3D defects of wall thinning. The ductile mechanism of subcritical fracture was considered as the main one. Moreover, material hardening and softening at plastic deformation (strain hardening, Bauschinger effect) was taken into account. This integrated approach allowed revealing the main regularities of failure of a typical pipeline element, depending on external loading. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
