Characterisation of LCF performance of X100 weld-joints: Mechanistic yield strength modelling, finite element analyses and DIC testing
This paper is concerned with the effect of welding on the fatigue behaviour of X100 material for steel catenary risers. The methodology includes both modelling and experimental characterisation. The modelling combines (i) a physically-based yield strength model to capture the thermally-induced micro...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-06-01
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| Series: | Journal of Advanced Joining Processes |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666330921000170 |
| _version_ | 1818669207473094656 |
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| author | D.J. Long R.J. Devaney P.E. O'Donoghue H. Song R.A. Barrett S.B. Leen |
| author_facet | D.J. Long R.J. Devaney P.E. O'Donoghue H. Song R.A. Barrett S.B. Leen |
| author_sort | D.J. Long |
| collection | DOAJ |
| description | This paper is concerned with the effect of welding on the fatigue behaviour of X100 material for steel catenary risers. The methodology includes both modelling and experimental characterisation. The modelling combines (i) a physically-based yield strength model to capture the thermally-induced microstructural heterogeneity and associated spatial variations in relative contributions of the key strengthening mechanisms due to welding, and (ii) a five-material cyclic plasticity model with a Coffin-Manson strain-life fatigue model for prediction of cross-weld heterogeneity in cyclic plasticity and fatigue response. The combined non-linear isotropic-kinematic cyclic plasticity behaviour of the five weld joint constituent materials (PM, weld metal (WM) and heat-affected zone (HAZ) subregions) is implemented via a user material (UMAT) subroutine, including Kocks-Mecking monotonic-cyclic evolution of yield stress. The experimental methodology consists of tensile tests with digital image correlation (DIC) for X100 PM and cross-weld samples. The results indicate that the primary phenomenon driving the detrimental effect of welding on fatigue is the evolution of cyclic strain localisation in the inter-critical heat-affected zone (ICHAZ), leading to predicted ICHAZ failure. |
| first_indexed | 2024-12-17T06:48:33Z |
| format | Article |
| id | doaj.art-26a3a87cf1464612a388336ce7586cad |
| institution | Directory Open Access Journal |
| issn | 2666-3309 |
| language | English |
| last_indexed | 2024-12-17T06:48:33Z |
| publishDate | 2021-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Advanced Joining Processes |
| spelling | doaj.art-26a3a87cf1464612a388336ce7586cad2022-12-21T21:59:39ZengElsevierJournal of Advanced Joining Processes2666-33092021-06-013100057Characterisation of LCF performance of X100 weld-joints: Mechanistic yield strength modelling, finite element analyses and DIC testingD.J. Long0R.J. Devaney1P.E. O'Donoghue2H. Song3R.A. Barrett4S.B. Leen5College of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute for Marine, Environment and Energy, NUI Galway, Ireland; Corresponding author at: College of Science and Engineering, National University of Ireland Galway, Ireland.College of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute for Marine, Environment and Energy, NUI Galway, IrelandCollege of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute for Marine, Environment and Energy, NUI Galway, IrelandSino-European Institute of Aviation Engineering, Civil Aviation University of China, ChinaCollege of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute for Marine, Environment and Energy, NUI Galway, Ireland; SFI I-Form Advanced Manufacturing Research Centre, IrelandCollege of Science and Engineering, National University of Ireland Galway, Ireland; Ryan Institute for Marine, Environment and Energy, NUI Galway, Ireland; SFI I-Form Advanced Manufacturing Research Centre, IrelandThis paper is concerned with the effect of welding on the fatigue behaviour of X100 material for steel catenary risers. The methodology includes both modelling and experimental characterisation. The modelling combines (i) a physically-based yield strength model to capture the thermally-induced microstructural heterogeneity and associated spatial variations in relative contributions of the key strengthening mechanisms due to welding, and (ii) a five-material cyclic plasticity model with a Coffin-Manson strain-life fatigue model for prediction of cross-weld heterogeneity in cyclic plasticity and fatigue response. The combined non-linear isotropic-kinematic cyclic plasticity behaviour of the five weld joint constituent materials (PM, weld metal (WM) and heat-affected zone (HAZ) subregions) is implemented via a user material (UMAT) subroutine, including Kocks-Mecking monotonic-cyclic evolution of yield stress. The experimental methodology consists of tensile tests with digital image correlation (DIC) for X100 PM and cross-weld samples. The results indicate that the primary phenomenon driving the detrimental effect of welding on fatigue is the evolution of cyclic strain localisation in the inter-critical heat-affected zone (ICHAZ), leading to predicted ICHAZ failure.http://www.sciencedirect.com/science/article/pii/S2666330921000170WeldingX100HSLADICMechanisticFinite element |
| spellingShingle | D.J. Long R.J. Devaney P.E. O'Donoghue H. Song R.A. Barrett S.B. Leen Characterisation of LCF performance of X100 weld-joints: Mechanistic yield strength modelling, finite element analyses and DIC testing Journal of Advanced Joining Processes Welding X100 HSLA DIC Mechanistic Finite element |
| title | Characterisation of LCF performance of X100 weld-joints: Mechanistic yield strength modelling, finite element analyses and DIC testing |
| title_full | Characterisation of LCF performance of X100 weld-joints: Mechanistic yield strength modelling, finite element analyses and DIC testing |
| title_fullStr | Characterisation of LCF performance of X100 weld-joints: Mechanistic yield strength modelling, finite element analyses and DIC testing |
| title_full_unstemmed | Characterisation of LCF performance of X100 weld-joints: Mechanistic yield strength modelling, finite element analyses and DIC testing |
| title_short | Characterisation of LCF performance of X100 weld-joints: Mechanistic yield strength modelling, finite element analyses and DIC testing |
| title_sort | characterisation of lcf performance of x100 weld joints mechanistic yield strength modelling finite element analyses and dic testing |
| topic | Welding X100 HSLA DIC Mechanistic Finite element |
| url | http://www.sciencedirect.com/science/article/pii/S2666330921000170 |
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