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dc.contributor.author
Sánchez, Pablo Javier
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dc.contributor.author
Oliver, Juan Pablo
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dc.contributor.author
Huespe, Alfredo Edmundo
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dc.date.available
2017-09-28T20:55:56Z
dc.date.issued
2008-12
dc.identifier.citation
Sánchez, Pablo Javier; Oliver, Juan Pablo; Huespe, Alfredo Edmundo; On some topics for the numerical simulation of ductile fracture; Elsevier; International Journal of Plasticity; 24; 6; 12-2008; 1008-1038
dc.identifier.issn
0749-6419
dc.identifier.uri
http://hdl.handle.net/11336/25388
dc.description.abstract
In this work, we analyze some aspects of the macroscopic Gurson-Tvergaard-Needleman (GTN) constitutive model when it is addressed to solve ductile fracture problems by means of numerical simulations:(i) The analytical solutions of the material discontinuous bifurcation problem is performed.Closed and exact formulas are obtained. The so determined critical conditions and the developed strain localization mode are afterward studied and compared in crack growth problems. Even when this methodology of analysis is rather standard at the present, the conclusions drawn from this study differ significantly from that obtained with a similar analysis in quasi-brittle fracture problems.(ii) A new very robust numerical integration method for the GTN model, namely the Impl-Ex Method, is proposed. It is a low computational cost algorithm, equivalent to a linear problem per each integration step, with a reasonable precision for engineering purposes. Its accuracy and convergence rate is assessed by means of an error study applied to a ductile fracture test simulation.(iii) A detailed analysis of a plane strain ductile crack growth problem is performed in a material containing two size-scale of voids. In the analysis, particular attention is given to the mesh size dependence and to the coalescence of the larger void.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Ductile Crack Growth;
dc.subject
Elasto-Plastic Porous Material
dc.subject
Finite Elements; Implex Algorithm;
dc.subject
Bifurcation And Strain Localization by Void Coalescence
dc.title
On some topics for the numerical simulation of ductile fracture
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-25T18:21:36Z
dc.journal.volume
24
dc.journal.number
6
dc.journal.pagination
1008-1038
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Sánchez, Pablo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.description.fil
Fil: Oliver, Juan Pablo. Technical University of Catalonia; España
dc.description.fil
Fil: Huespe, Alfredo Edmundo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.journal.title
International Journal of Plasticity
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ijplas.2007.08.004
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0749641907001155
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