Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness
A set of fatigue and fracture assessment equations had been incorporated into British Standard 7910:2013 (BS 7910:2013) to estimate the effect of misalignment for various geometric configurations containing a surface crack. In this study, extensive 3-D finite element (FE) analyses are carried out to...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/82955 http://hdl.handle.net/10220/42355 |
| _version_ | 1811689163344314368 |
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| author | Zhao, Hai Sheng Lie, S. T. Zhang, Yao |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Zhao, Hai Sheng Lie, S. T. Zhang, Yao |
| author_sort | Zhao, Hai Sheng |
| collection | NTU |
| description | A set of fatigue and fracture assessment equations had been incorporated into British Standard 7910:2013 (BS 7910:2013) to estimate the effect of misalignment for various geometric configurations containing a surface crack. In this study, extensive 3-D finite element (FE) analyses are carried out to determine the dimensionless stress intensity factors (Y) at the crack deepest point and crack ends of plate-to-plate butt welds with parallel misalignment of same thickness. In comparison to BS 7910:2013, it is observed that the assessment equations underestimate the Y values for shallow cracks and overestimate the corresponding values for deeper cracks with percentage differences in values being as high as 82% and 12%, respectively. New Y equations for misaligned butt welds are proposed using multiple regression analyses. |
| first_indexed | 2024-10-01T05:43:44Z |
| format | Journal Article |
| id | ntu-10356/82955 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:43:44Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/829552020-03-07T11:43:32Z Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness Zhao, Hai Sheng Lie, S. T. Zhang, Yao School of Civil and Environmental Engineering Finite element analyses Misaligned butt welds A set of fatigue and fracture assessment equations had been incorporated into British Standard 7910:2013 (BS 7910:2013) to estimate the effect of misalignment for various geometric configurations containing a surface crack. In this study, extensive 3-D finite element (FE) analyses are carried out to determine the dimensionless stress intensity factors (Y) at the crack deepest point and crack ends of plate-to-plate butt welds with parallel misalignment of same thickness. In comparison to BS 7910:2013, it is observed that the assessment equations underestimate the Y values for shallow cracks and overestimate the corresponding values for deeper cracks with percentage differences in values being as high as 82% and 12%, respectively. New Y equations for misaligned butt welds are proposed using multiple regression analyses. Accepted version 2017-05-08T09:28:37Z 2019-12-06T15:08:57Z 2017-05-08T09:28:37Z 2019-12-06T15:08:57Z 2017 2017 Journal Article Zhao, H. S., Lie, S. T., & Zhang, Y. (2017). Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness. Marine Structures, 53, 148-163. 0951-8339 https://hdl.handle.net/10356/82955 http://hdl.handle.net/10220/42355 10.1016/j.marstruc.2017.02.005 199410 en Marine Structures © 2017 Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Marine Structures, Elsevier Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.marstruc.2017.02.005]. 40 p. application/msword |
| spellingShingle | Finite element analyses Misaligned butt welds Zhao, Hai Sheng Lie, S. T. Zhang, Yao Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness |
| title | Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness |
| title_full | Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness |
| title_fullStr | Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness |
| title_full_unstemmed | Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness |
| title_short | Stress intensity factors for semi-elliptical surface cracks in plate-to-plate butt welds with parallel misalignment of same thickness |
| title_sort | stress intensity factors for semi elliptical surface cracks in plate to plate butt welds with parallel misalignment of same thickness |
| topic | Finite element analyses Misaligned butt welds |
| url | https://hdl.handle.net/10356/82955 http://hdl.handle.net/10220/42355 |
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