| Autor: |
N.I. Pivtorak, Galina Rozynka, E.A. Velikoivanenko, A.S. Milenin |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Structural Integrity ISBN: 9783030478827 |
| DOI: |
10.1007/978-3-030-47883-4_33 |
| Popis: |
Analytical prediction of the reliability of pipelines under ultra-low-cycle loading demands the consideration of the several interrelated damaging factors, those determine the limit state of specific structure. For that in this work it was developed the complex numerical technique for finite-element assessment of damage accumulation and limit state of welded pipelines with corrosion-erosion metal loss. The ductile mechanism of subcritical damage was considered as the main one that assumes certain material softening due to voids nucleation and accumulation up to limit state. Additionally, it was necessary to take into account the material hardening and softening in plastic strain that was described by isotropic and kinematic mixed hardening laws. This complex approach allowed revealing the major physical-mechanical mechanisms of structure failure depending on the type of external loading, size of the local metal loss and the features of welding on the limit state of typical pipeline element. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
