A consistent use of the Gurson-Tvergaard-Needleman damage model for the R-curve calculation
The scope of the present work is to point out a consistent simulation procedure for the quasi-static fracture processes, starting from the micro-structural characteristics of the material. To this aim, a local nine-parameters Gurson-Tvergaard-Needleman (GTN) damage law has been used. The damage para...
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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 |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero24/numero_24_art_17.pdf |
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| _version_ | 1841564283401404416 |
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| author | Gabriele Cricrì |
| author_facet | Gabriele Cricrì |
| author_sort | Gabriele Cricrì |
| collection | DOAJ |
| description | The scope of the present work is to point out a consistent simulation procedure for the quasi-static fracture processes, starting from the micro-structural characteristics of the material. To this aim, a local nine-parameters Gurson-Tvergaard-Needleman (GTN) damage law has been used. The damage parameters depend on the micro-structural characteristics and must be calculated, measured or opportunely tuned. This can be done, as proposed by the author, by using an opportunely tuned GTN model for the representative volume element simulations, in order to enrich the original damage model by considering also the defect size distribution. Once determined all the material parameters, an MT fracture test has been simulated by a FE code, to calculate the R-curve in an aeronautical Al-based alloy. The simulation procedure produced results in a very good agreement with the experimental data. |
| format | Article |
| id | doaj-art-f0749a2023e4461aabc04dac8f734cfc |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2013-04-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-f0749a2023e4461aabc04dac8f734cfc2025-01-02T23:01:33ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932013-04-01724161174A consistent use of the Gurson-Tvergaard-Needleman damage model for the R-curve calculationGabriele CricrìThe scope of the present work is to point out a consistent simulation procedure for the quasi-static fracture processes, starting from the micro-structural characteristics of the material. To this aim, a local nine-parameters Gurson-Tvergaard-Needleman (GTN) damage law has been used. The damage parameters depend on the micro-structural characteristics and must be calculated, measured or opportunely tuned. This can be done, as proposed by the author, by using an opportunely tuned GTN model for the representative volume element simulations, in order to enrich the original damage model by considering also the defect size distribution. Once determined all the material parameters, an MT fracture test has been simulated by a FE code, to calculate the R-curve in an aeronautical Al-based alloy. The simulation procedure produced results in a very good agreement with the experimental data.http://www.gruppofrattura.it/pdf/rivista/numero24/numero_24_art_17.pdfGTN modelDuctile fractureCell calibrationR-curve |
| spellingShingle | Gabriele Cricrì A consistent use of the Gurson-Tvergaard-Needleman damage model for the R-curve calculation Fracture and Structural Integrity GTN model Ductile fracture Cell calibration R-curve |
| title | A consistent use of the Gurson-Tvergaard-Needleman damage model for the R-curve calculation |
| title_full | A consistent use of the Gurson-Tvergaard-Needleman damage model for the R-curve calculation |
| title_fullStr | A consistent use of the Gurson-Tvergaard-Needleman damage model for the R-curve calculation |
| title_full_unstemmed | A consistent use of the Gurson-Tvergaard-Needleman damage model for the R-curve calculation |
| title_short | A consistent use of the Gurson-Tvergaard-Needleman damage model for the R-curve calculation |
| title_sort | consistent use of the gurson tvergaard needleman damage model for the r curve calculation |
| topic | GTN model Ductile fracture Cell calibration R-curve |
| url | http://www.gruppofrattura.it/pdf/rivista/numero24/numero_24_art_17.pdf |
| work_keys_str_mv | AT gabrielecricri aconsistentuseofthegursontvergaardneedlemandamagemodelforthercurvecalculation AT gabrielecricri consistentuseofthegursontvergaardneedlemandamagemodelforthercurvecalculation |