Modification of the Bonora Damage Model for shear failure
The Bonora damage model was extended to account for shear-controlled damage. To this purpose, a new definition for the damage dissipation potential in which an explicit dependence on the third invariant of deviatoric stress was proposed. This expression leads to damage rate equation in which two con...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2018-04-01
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| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero44/numero_44_art_11.pdf |
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| _version_ | 1841562952097857536 |
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| author | Nicola Bonora Gabriel Testa Andrew Ruggiero Gianluca Iannitti Domenico Gentile |
| author_facet | Nicola Bonora Gabriel Testa Andrew Ruggiero Gianluca Iannitti Domenico Gentile |
| author_sort | Nicola Bonora |
| collection | DOAJ |
| description | The Bonora damage model was extended to account for shear-controlled damage. To this purpose, a new definition for the damage dissipation potential in which an explicit dependence on the third invariant of deviatoric stress was proposed. This expression leads to damage rate equation in which two contributions, the first for void nucleation and growth damage process the latter for shear fracture, can be recognized. For the JIII controlled damage contribution, only two additional material parameters are necessary of easy experimental identification The extended model formulation was verified predicting the failure locus for AL 2024-T351 alloy. Finally, the failure locus for stress state combinations, where the minimum material ductility is expected, was determined |
| format | Article |
| id | doaj-art-cb133a6850354273b2e9b1a8d5a943b2 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2018-04-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-cb133a6850354273b2e9b1a8d5a943b22025-01-03T00:39:31ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932018-04-01124414015010.3221/IGF-ESIS.44.1110.3221/IGF-ESIS.44.11Modification of the Bonora Damage Model for shear failureNicola BonoraGabriel TestaAndrew RuggieroGianluca IannittiDomenico GentileThe Bonora damage model was extended to account for shear-controlled damage. To this purpose, a new definition for the damage dissipation potential in which an explicit dependence on the third invariant of deviatoric stress was proposed. This expression leads to damage rate equation in which two contributions, the first for void nucleation and growth damage process the latter for shear fracture, can be recognized. For the JIII controlled damage contribution, only two additional material parameters are necessary of easy experimental identification The extended model formulation was verified predicting the failure locus for AL 2024-T351 alloy. Finally, the failure locus for stress state combinations, where the minimum material ductility is expected, was determinedhttp://www.gruppofrattura.it/pdf/rivista/numero44/numero_44_art_11.pdfCDM Ductile damage Failure locus Triaxiality Lode parameter Shear fracture |
| spellingShingle | Nicola Bonora Gabriel Testa Andrew Ruggiero Gianluca Iannitti Domenico Gentile Modification of the Bonora Damage Model for shear failure Fracture and Structural Integrity CDM Ductile damage Failure locus Triaxiality Lode parameter Shear fracture |
| title | Modification of the Bonora Damage Model for shear failure |
| title_full | Modification of the Bonora Damage Model for shear failure |
| title_fullStr | Modification of the Bonora Damage Model for shear failure |
| title_full_unstemmed | Modification of the Bonora Damage Model for shear failure |
| title_short | Modification of the Bonora Damage Model for shear failure |
| title_sort | modification of the bonora damage model for shear failure |
| topic | CDM Ductile damage Failure locus Triaxiality Lode parameter Shear fracture |
| url | http://www.gruppofrattura.it/pdf/rivista/numero44/numero_44_art_11.pdf |
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