Modification of the Bonora Damage Model for shear failure

Modification of the Bonora Damage Model for shear failure

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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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Main Authors: Nicola Bonora, Gabriel Testa, Andrew Ruggiero, Gianluca Iannitti, Domenico Gentile
Format: Article
Language:English
Published: Gruppo Italiano Frattura 2018-04-01
Series:Frattura ed Integrità Strutturale
Subjects:
CDM
Ductile damage
Failure locus
Triaxiality
Lode parameter
Shear fracture
Online Access:http://www.gruppofrattura.it/pdf/rivista/numero44/numero_44_art_11.pdf
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spelling doaj-cb133a6850354273b2e9b1a8d5a943b22020-11-24T23:02:41ZengGruppo Italiano FratturaFrattura ed Integrità Strutturale1971-89932018-04-01124414015010.3221/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
collection DOAJ
language English
format Article
sources DOAJ
author Nicola Bonora
Gabriel Testa
Andrew Ruggiero
Gianluca Iannitti
Domenico Gentile
spellingShingle Nicola Bonora
Gabriel Testa
Andrew Ruggiero
Gianluca Iannitti
Domenico Gentile
Modification of the Bonora Damage Model for shear failure
Frattura ed Integrità Strutturale
CDM
Ductile damage
Failure locus
Triaxiality
Lode parameter
Shear fracture
author_facet Nicola Bonora
Gabriel Testa
Andrew Ruggiero
Gianluca Iannitti
Domenico Gentile
author_sort Nicola Bonora
title Modification of the Bonora Damage Model for shear failure
title_short 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_sort modification of the bonora damage model for shear failure
publisher Gruppo Italiano Frattura
series Frattura ed Integrità Strutturale
issn 1971-8993
publishDate 2018-04-01
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
topic CDM
Ductile damage
Failure locus
Triaxiality
Lode parameter
Shear fracture
url http://www.gruppofrattura.it/pdf/rivista/numero44/numero_44_art_11.pdf
work_keys_str_mv AT nicolabonora modificationofthebonoradamagemodelforshearfailure
AT gabrieltesta modificationofthebonoradamagemodelforshearfailure
AT andrewruggiero modificationofthebonoradamagemodelforshearfailure
AT gianlucaiannitti modificationofthebonoradamagemodelforshearfailure
AT domenicogentile modificationofthebonoradamagemodelforshearfailure
_version_ 1725635480367661056

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