Stress-strain assessment of plain dents in gas pipelines

Paper presents the analytical solution of the stress-strain state for a dented pipeline, based on the method of equivalent loads. First off all solution for a harmonic imperfection is found, then using Fourier series expansion a semi-analytical procedure is proposed to assess single dent. Comparison...

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Main Authors: Yaroslav Dubyk, Iryna Seliverstova
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2020-01-01
Series:Fracture and Structural Integrity
Subjects:
Online Access:https://www.fracturae.com/index.php/fis/article/view/2679
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author Yaroslav Dubyk
Iryna Seliverstova
author_facet Yaroslav Dubyk
Iryna Seliverstova
author_sort Yaroslav Dubyk
collection DOAJ
description Paper presents the analytical solution of the stress-strain state for a dented pipeline, based on the method of equivalent loads. First off all solution for a harmonic imperfection is found, then using Fourier series expansion a semi-analytical procedure is proposed to assess single dent. Comparison between analytical and numerical results for the axial force and pressure load is given. Influence of the dent dimensions, shell radius to thickness ratio and initial loading to stress concentration factor are discussed.
format Article
id doaj-art-72993ab04e9b40e8b25336c0acf24673
institution Kabale University
issn 1971-8993
language English
publishDate 2020-01-01
publisher Gruppo Italiano Frattura
record_format Article
series Fracture and Structural Integrity
spelling doaj-art-72993ab04e9b40e8b25336c0acf246732025-01-02T23:01:57ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932020-01-01145145946610.3221/IGF-ESIS.51.342679Stress-strain assessment of plain dents in gas pipelinesYaroslav DubykIryna SeliverstovaPaper presents the analytical solution of the stress-strain state for a dented pipeline, based on the method of equivalent loads. First off all solution for a harmonic imperfection is found, then using Fourier series expansion a semi-analytical procedure is proposed to assess single dent. Comparison between analytical and numerical results for the axial force and pressure load is given. Influence of the dent dimensions, shell radius to thickness ratio and initial loading to stress concentration factor are discussed.https://www.fracturae.com/index.php/fis/article/view/2679cylindrical shellplane dentapproximate solution
spellingShingle Yaroslav Dubyk
Iryna Seliverstova
Stress-strain assessment of plain dents in gas pipelines
Fracture and Structural Integrity
cylindrical shell
plane dent
approximate solution
title Stress-strain assessment of plain dents in gas pipelines
title_full Stress-strain assessment of plain dents in gas pipelines
title_fullStr Stress-strain assessment of plain dents in gas pipelines
title_full_unstemmed Stress-strain assessment of plain dents in gas pipelines
title_short Stress-strain assessment of plain dents in gas pipelines
title_sort stress strain assessment of plain dents in gas pipelines
topic cylindrical shell
plane dent
approximate solution
url https://www.fracturae.com/index.php/fis/article/view/2679
work_keys_str_mv AT yaroslavdubyk stressstrainassessmentofplaindentsingaspipelines
AT irynaseliverstova stressstrainassessmentofplaindentsingaspipelines