Numerical modelling in non linear fracture mechanics
Some numerical studies of crack propagation are based on using constitutive models that account for damage evolution in the material. When a critical damage value has been reached in a material point, it is natural to assume that this point has no more carrying capacity, as is done numerically in th...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2013-04-01
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| Series: | Fracture and Structural Integrity |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/18 |
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| _version_ | 1850056148320780288 |
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| author | Viggo Tvergaard |
| author_facet | Viggo Tvergaard |
| author_sort | Viggo Tvergaard |
| collection | DOAJ |
| description | Some numerical studies of crack propagation are based on using constitutive models that account
for damage evolution in the material. When a critical damage value has been reached in a material
point, it is natural to assume that this point has no more carrying capacity, as is done numerically in the element
vanish technique. In the present review this procedure is illustrated for micromechanically based material
models, such as a ductile failure model that accounts for the nucleation and growth of voids to coalescence,
and a model for intergranular creep failure with diffusive growth of grain boundary cavities leading
to micro-crack formation. The procedure is also illustrated for low cycle fatigue, based on continuum damage
mechanics. In addition, the possibility of crack growth predictions for elastic-plastic solids using cohesive
zone models to represent the fracture process is discussed. |
| format | Article |
| id | doaj-art-b24f4a9fb9f64283b9e5d8e974eeecc3 |
| institution | DOAJ |
| issn | 1971-8993 |
| language | English |
| publishDate | 2013-04-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-b24f4a9fb9f64283b9e5d8e974eeecc32025-08-20T02:51:46ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932013-04-011110.3221/IGF-ESIS.01.03Numerical modelling in non linear fracture mechanicsViggo Tvergaard0Dept. of Mechanical Engineering, Solid mechanics, Technical University of DenmarkSome numerical studies of crack propagation are based on using constitutive models that account for damage evolution in the material. When a critical damage value has been reached in a material point, it is natural to assume that this point has no more carrying capacity, as is done numerically in the element vanish technique. In the present review this procedure is illustrated for micromechanically based material models, such as a ductile failure model that accounts for the nucleation and growth of voids to coalescence, and a model for intergranular creep failure with diffusive growth of grain boundary cavities leading to micro-crack formation. The procedure is also illustrated for low cycle fatigue, based on continuum damage mechanics. In addition, the possibility of crack growth predictions for elastic-plastic solids using cohesive zone models to represent the fracture process is discussed.https://www.fracturae.com/index.php/fis/article/view/18 |
| spellingShingle | Viggo Tvergaard Numerical modelling in non linear fracture mechanics Fracture and Structural Integrity |
| title | Numerical modelling in non linear fracture mechanics |
| title_full | Numerical modelling in non linear fracture mechanics |
| title_fullStr | Numerical modelling in non linear fracture mechanics |
| title_full_unstemmed | Numerical modelling in non linear fracture mechanics |
| title_short | Numerical modelling in non linear fracture mechanics |
| title_sort | numerical modelling in non linear fracture mechanics |
| url | https://www.fracturae.com/index.php/fis/article/view/18 |
| work_keys_str_mv | AT viggotvergaard numericalmodellinginnonlinearfracturemechanics |