Assessment of crack growth development in main pipeline on the basis of elastoplastic model

Authors

  • Константин Александрович Вансович Omsk State Technical University, Omsk, Russia
  • Игорь Петрович Аистов Omsk State Technical University, Omsk, Russia https://orcid.org/0000-0003-4069-0811
  • Александр Александрович Нахлесткин Omsk State Technical University, Omsk, Russia
  • Давид Симонович Беселия JSC «Transneft – Western Siberia», Omsk, Russia

DOI:

https://doi.org/10.25206/1813-8225-2019-167-10-14

Keywords:

surface crack, main pipeline, finite element method, crack growth rate, overloading cycle, mean stress change coefficient, crack growth prediction

Abstract

A method for predicting the growth of surface cracks in the wall of the main pipeline under action of operational loads is proposed. The elastoplastic model of surface crack growth under biaxial loading is described on the example of steel 20. ANSYS developed an algorithm for modeling crack growth taking into account residual stresses. The forms and sizes of crack opening under varying loading cycles of the pipeline are determined. The dependence of the crack growth rate under varying loads on the stress state in front of the crack tip is established. The influence of overload cycles on crack growth is investigated. The technique of crack development prediction based on in-line diagnostics and pipeline loading monitoring is described.

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Author Biographies

Константин Александрович Вансович, Omsk State Technical University, Omsk, Russia

кандидат технических наук, доцент (Россия), доцент кафедры «Нефтегазовое дело, стандартизация и метрология» Омского государственного технического университета (ОмГТУ).

Игорь Петрович Аистов, Omsk State Technical University, Omsk, Russia

доктор технических наук, профессор кафедры «Промышленная экология и безопасность» ОмГТУ.

Александр Александрович Нахлесткин, Omsk State Technical University, Omsk, Russia

инженер-технолог отдела главного технолога АО «Транснефть–Западная Сибирь», г. Омск.

Давид Симонович Беселия, JSC «Transneft – Western Siberia», Omsk, Russia

заместитель начальника отдела главного технолога АО «Транснефть– Западная Сибирь», г. Омск.

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Abstract views: 12

Published

2019-11-22

How to Cite

[1]
Вансович, К.А., Аистов, И.П., Нахлесткин, А.А. and Беселия, Д.С. 2019. Assessment of crack growth development in main pipeline on the basis of elastoplastic model. Omsk Scientific Bulletin. 5(167) (Nov. 2019), 10–14. DOI:https://doi.org/10.25206/1813-8225-2019-167-10-14.

Issue

No. 5(167) (2019)

Section

Mechanical Engineering and Engineering Science

License

Non-exclusive rights to the article are transferred to the journal in full accordance with the Creative Commons License BY-NC-SA 4.0 «Attribution-NonCommercial-ShareAlike 4.0 Worldwide License (CC BY-NC-SA 4.0»)

by-nc-sa

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