Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines
In this study, numerical simulation analysis on fracture of girth welds on pipelines with crack defect and small Single Edge Notch Beam(SENB) was performed with the finite element method for accurately characterizing the correlation of apparent fracture toughness of the girth welds on high-grade ste...
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| Format: | Article |
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Editorial Office of Oil & Gas Storage and Transportation
2022-03-01
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| Series: | You-qi chuyun |
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| Online Access: | http://yqcy.xml-journal.net/cn/article/doi/10.6047/j.issn.1000-8241.2022.03.005 |
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| author | Jinxu JIANG Hong ZHANG Lei GU Dong ZHANG Kai WU Xiaoben LIU |
| author_facet | Jinxu JIANG Hong ZHANG Lei GU Dong ZHANG Kai WU Xiaoben LIU |
| author_sort | Jinxu JIANG |
| collection | DOAJ |
| description | In this study, numerical simulation analysis on fracture of girth welds on pipelines with crack defect and small Single Edge Notch Beam(SENB) was performed with the finite element method for accurately characterizing the correlation of apparent fracture toughness of the girth welds on high-grade steel pipelines and the small specimens. The conversion coefficient of apparent fracture toughness was introduced by comparing the difference of apparent fracture toughness of the girth welds on full-scale pipelines and the SENB specimens. Conversion coefficients between full-scale pipelines and SENB specimens under different working conditions were obtained by quantitatively studying the impact of pipe diameter, wall thickness, crack length and depth on the apparent fracture toughness of girth welds on full-scale pipelines, realizing quantitative characterization of the apparent fracture toughness of girth welds on high-grade steel pipelines based on the test results of small specimens. The results indicate that the pipe diameter has little effect on the apparent fracture toughness and its conversion coefficient. The conversion coefficient of fracture toughness increases with the increasing of wall thickness and decreases with the increasing of crack length and depth. The effect of crack depth on the apparent fracture toughness of pipelines is more obvious than other influencing factors. A relatively accurate apparent fracture toughness of girth welds on high-grade steel pipelines can be obtained based on the conversion coefficient, providing theoretical reference for accurately characterizing the apparent fracture toughness of girth welds on high-grade steel pipelines. |
| first_indexed | 2024-04-24T10:05:48Z |
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| id | doaj.art-f32bdfbc7bc24686bdc87ad7ebb3c539 |
| institution | Directory Open Access Journal |
| issn | 1000-8241 |
| language | zho |
| last_indexed | 2024-04-24T10:05:48Z |
| publishDate | 2022-03-01 |
| publisher | Editorial Office of Oil & Gas Storage and Transportation |
| record_format | Article |
| series | You-qi chuyun |
| spelling | doaj.art-f32bdfbc7bc24686bdc87ad7ebb3c5392024-04-13T02:28:13ZzhoEditorial Office of Oil & Gas Storage and TransportationYou-qi chuyun1000-82412022-03-0141328128710.6047/j.issn.1000-8241.2022.03.005yqcy-41-3-281Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelinesJinxu JIANG0Hong ZHANG1Lei GU2Dong ZHANG3Kai WU4Xiaoben LIU5China University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyChina University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyPipe China North China CompanyChina University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyChina University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyChina University of Petroleum (Beijing)//National Engineering Laboratory for Pipeline Safety//MOE Key Laboratory of Petroleum Engineering//Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyIn this study, numerical simulation analysis on fracture of girth welds on pipelines with crack defect and small Single Edge Notch Beam(SENB) was performed with the finite element method for accurately characterizing the correlation of apparent fracture toughness of the girth welds on high-grade steel pipelines and the small specimens. The conversion coefficient of apparent fracture toughness was introduced by comparing the difference of apparent fracture toughness of the girth welds on full-scale pipelines and the SENB specimens. Conversion coefficients between full-scale pipelines and SENB specimens under different working conditions were obtained by quantitatively studying the impact of pipe diameter, wall thickness, crack length and depth on the apparent fracture toughness of girth welds on full-scale pipelines, realizing quantitative characterization of the apparent fracture toughness of girth welds on high-grade steel pipelines based on the test results of small specimens. The results indicate that the pipe diameter has little effect on the apparent fracture toughness and its conversion coefficient. The conversion coefficient of fracture toughness increases with the increasing of wall thickness and decreases with the increasing of crack length and depth. The effect of crack depth on the apparent fracture toughness of pipelines is more obvious than other influencing factors. A relatively accurate apparent fracture toughness of girth welds on high-grade steel pipelines can be obtained based on the conversion coefficient, providing theoretical reference for accurately characterizing the apparent fracture toughness of girth welds on high-grade steel pipelines.http://yqcy.xml-journal.net/cn/article/doi/10.6047/j.issn.1000-8241.2022.03.005high-grade steel pipelinessenb specimensgirth weldsapparent fracture toughnessnumerical simulation |
| spellingShingle | Jinxu JIANG Hong ZHANG Lei GU Dong ZHANG Kai WU Xiaoben LIU Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines You-qi chuyun high-grade steel pipelines senb specimens girth welds apparent fracture toughness numerical simulation |
| title | Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines |
| title_full | Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines |
| title_fullStr | Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines |
| title_full_unstemmed | Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines |
| title_short | Numerical simulation on influencing factors of apparent fracture toughness of girth welds on high-grade steel pipelines |
| title_sort | numerical simulation on influencing factors of apparent fracture toughness of girth welds on high grade steel pipelines |
| topic | high-grade steel pipelines senb specimens girth welds apparent fracture toughness numerical simulation |
| url | http://yqcy.xml-journal.net/cn/article/doi/10.6047/j.issn.1000-8241.2022.03.005 |
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