Numerical modelling of dynamic ductile fracture propagation in different lab-scale experiments using GTN damage model
Initiation and propagation of ductile fractures are a major consideration during the design of high-pressure pipelines. Consequences of a pipeline failure can be catastrophic thus structural integrity must be ensured over several decades. Traditional lab-scale experiments such as the Charpy V-Notch...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2020-02-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2668 |
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| author | Benoît Paermentier Dimitri Debruyne Reza Talemi |
| author_facet | Benoît Paermentier Dimitri Debruyne Reza Talemi |
| author_sort | Benoît Paermentier |
| collection | DOAJ |
| description | Initiation and propagation of ductile fractures are a major consideration during the design of high-pressure pipelines. Consequences of a pipeline failure can be catastrophic thus structural integrity must be ensured over several decades. Traditional lab-scale experiments such as the Charpy V-Notch (CVN) and Drop Weight Tear Test (DWTT), impact experiments on a notched three-point bending sample, are widely used to measure the fracture toughness of a material. However, with increasing wall thickness and the transition to high-grade steels in the pipeline industry, the size-effect of the specimen and inverse fracture became prominent issues. A new testing methodology called the Dynamic Tensile Tear Test (DT3) is currently investigated as to address the issues presented by the current state of the art.
In this study, a numerical investigation is conducted on the CVN, DWTT and DT3 experiments to compare the modelling of dynamic ductile fracture propagation in three different testing scales using the Gurson-Tvergaard-Needleman (GTN) damage model. X70 and X100 pipeline steel grades are used to model material behaviour. For each considered lab-scale experiment, the dynamic ductile fracture behaviour was successfully reproduced using the GTN damage model. |
| format | Article |
| id | doaj-art-b096cdfaff0443838358ecc4fc861aed |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2020-02-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-b096cdfaff0443838358ecc4fc861aed2025-01-02T23:01:27ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932020-02-011452Numerical modelling of dynamic ductile fracture propagation in different lab-scale experiments using GTN damage modelBenoît Paermentier0Dimitri Debruyne1Reza Talemi2Department of Materials Engineering, KU Leuven, Belgium Department of Materials Engineering, KU Leuven, Belgium Department of Materials Engineering, KU Leuven, Belgium Initiation and propagation of ductile fractures are a major consideration during the design of high-pressure pipelines. Consequences of a pipeline failure can be catastrophic thus structural integrity must be ensured over several decades. Traditional lab-scale experiments such as the Charpy V-Notch (CVN) and Drop Weight Tear Test (DWTT), impact experiments on a notched three-point bending sample, are widely used to measure the fracture toughness of a material. However, with increasing wall thickness and the transition to high-grade steels in the pipeline industry, the size-effect of the specimen and inverse fracture became prominent issues. A new testing methodology called the Dynamic Tensile Tear Test (DT3) is currently investigated as to address the issues presented by the current state of the art. In this study, a numerical investigation is conducted on the CVN, DWTT and DT3 experiments to compare the modelling of dynamic ductile fracture propagation in three different testing scales using the Gurson-Tvergaard-Needleman (GTN) damage model. X70 and X100 pipeline steel grades are used to model material behaviour. For each considered lab-scale experiment, the dynamic ductile fracture behaviour was successfully reproduced using the GTN damage model.https://www.fracturae.com/index.php/fis/article/view/2668Ductile fractureHigh strength steelFEMFracture toughnessGTN |
| spellingShingle | Benoît Paermentier Dimitri Debruyne Reza Talemi Numerical modelling of dynamic ductile fracture propagation in different lab-scale experiments using GTN damage model Fracture and Structural Integrity Ductile fracture High strength steel FEM Fracture toughness GTN |
| title | Numerical modelling of dynamic ductile fracture propagation in different lab-scale experiments using GTN damage model |
| title_full | Numerical modelling of dynamic ductile fracture propagation in different lab-scale experiments using GTN damage model |
| title_fullStr | Numerical modelling of dynamic ductile fracture propagation in different lab-scale experiments using GTN damage model |
| title_full_unstemmed | Numerical modelling of dynamic ductile fracture propagation in different lab-scale experiments using GTN damage model |
| title_short | Numerical modelling of dynamic ductile fracture propagation in different lab-scale experiments using GTN damage model |
| title_sort | numerical modelling of dynamic ductile fracture propagation in different lab scale experiments using gtn damage model |
| topic | Ductile fracture High strength steel FEM Fracture toughness GTN |
| url | https://www.fracturae.com/index.php/fis/article/view/2668 |
| work_keys_str_mv | AT benoitpaermentier numericalmodellingofdynamicductilefracturepropagationindifferentlabscaleexperimentsusinggtndamagemodel AT dimitridebruyne numericalmodellingofdynamicductilefracturepropagationindifferentlabscaleexperimentsusinggtndamagemodel AT rezatalemi numericalmodellingofdynamicductilefracturepropagationindifferentlabscaleexperimentsusinggtndamagemodel |