Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure
The crack tip constraint and failure assessment diagram （FAD） in both plate specimen and pipe structure were studied to find out the compatibility and correlation of between the sample and piple.Based on the finite element method, constraints at crack tip of central cracked plate （CCP） specimen and...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2025-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.01.013 |
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| author | MIAO Xinting LIU Guoxu ZHANG Jinbo PENG Jian BIE Fengfeng |
| author_facet | MIAO Xinting LIU Guoxu ZHANG Jinbo PENG Jian BIE Fengfeng |
| author_sort | MIAO Xinting |
| collection | DOAJ |
| description | The crack tip constraint and failure assessment diagram （FAD） in both plate specimen and pipe structure were studied to find out the compatibility and correlation of between the sample and piple.Based on the finite element method, constraints at crack tip of central cracked plate （CCP） specimen and cracked pressure pipe were obtained.It was found that crack tip constraint of CCP specimen under uniaxial loading is better matched with thick-walled pipeline under axial tensile loading, while CCP specimen under biaxial loading is better matched with thin-walled pipeline under internal pressure.In addition, the failure assessment diagram of CCP specimen and pipeline were obtained.It was found that FAD of CCP specimen is less related with thickness, when the thickness of pipe is within the range of thick wall or thin wall; was also pointed out that stress parallel to the crack direction increases the failure assessment curve （FAC） of the structure. Finally, it is found that FAC of the central crack plate specimen is higher than that of the pressure bearing pipeline, for the two structures with the same constraint level，and crack tip mixed mode degree and loading mode. That is, it is unsafe to use FAD of CCP specimen to evaluate pipeline. |
| format | Article |
| id | doaj-art-bc76e94d60f24988b1cdab3f9547a7c9 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-bc76e94d60f24988b1cdab3f9547a7c92025-01-25T19:00:09ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692025-01-014711312267195791Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structureMIAO XintingLIU GuoxuZHANG JinboPENG JianBIE FengfengThe crack tip constraint and failure assessment diagram （FAD） in both plate specimen and pipe structure were studied to find out the compatibility and correlation of between the sample and piple.Based on the finite element method, constraints at crack tip of central cracked plate （CCP） specimen and cracked pressure pipe were obtained.It was found that crack tip constraint of CCP specimen under uniaxial loading is better matched with thick-walled pipeline under axial tensile loading, while CCP specimen under biaxial loading is better matched with thin-walled pipeline under internal pressure.In addition, the failure assessment diagram of CCP specimen and pipeline were obtained.It was found that FAD of CCP specimen is less related with thickness, when the thickness of pipe is within the range of thick wall or thin wall; was also pointed out that stress parallel to the crack direction increases the failure assessment curve （FAC） of the structure. Finally, it is found that FAC of the central crack plate specimen is higher than that of the pressure bearing pipeline, for the two structures with the same constraint level，and crack tip mixed mode degree and loading mode. That is, it is unsafe to use FAD of CCP specimen to evaluate pipeline.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.01.013Mixed mode crackConstraintFailure assessment diagramPressure structure |
| spellingShingle | MIAO Xinting LIU Guoxu ZHANG Jinbo PENG Jian BIE Fengfeng Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure Jixie qiangdu Mixed mode crack Constraint Failure assessment diagram Pressure structure |
| title | Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure |
| title_full | Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure |
| title_fullStr | Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure |
| title_full_unstemmed | Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure |
| title_short | Study on constraint of mixed mode crack and failure assessment diagram of pressure-bearing structure |
| title_sort | study on constraint of mixed mode crack and failure assessment diagram of pressure bearing structure |
| topic | Mixed mode crack Constraint Failure assessment diagram Pressure structure |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2025.01.013 |
| work_keys_str_mv | AT miaoxinting studyonconstraintofmixedmodecrackandfailureassessmentdiagramofpressurebearingstructure AT liuguoxu studyonconstraintofmixedmodecrackandfailureassessmentdiagramofpressurebearingstructure AT zhangjinbo studyonconstraintofmixedmodecrackandfailureassessmentdiagramofpressurebearingstructure AT pengjian studyonconstraintofmixedmodecrackandfailureassessmentdiagramofpressurebearingstructure AT biefengfeng studyonconstraintofmixedmodecrackandfailureassessmentdiagramofpressurebearingstructure |