Influence of porosity on cavitation instability predictions for elastic–plastic solids

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Show simple item record Tvergaard, Viggo Vadillo Martín, Guadalupe 2012-10-31T13:51:31Z 2012-10-31T13:51:31Z 2007-02
dc.identifier.bibliographicCitation International Journal of Mechanical Sciences, vol. 49, n. 2, February 2007. Pp. 210-216.
dc.identifier.issn 0020-7403
dc.description.abstract Cavitation instabilities have been found for a single void in a ductile metal stressed under high triaxiality conditions. Here, the possibility of unstable cavity growth is studied for a metal containing many voids. The central cavity is discretely represented, while the surrounding voids are represented by a porous ductile material model in terms of a field quantity that specifies the variation of the void volume fraction in the surrounding metal. As the central void grows, the surrounding void volume fractions increase in nonuniform fields, where the strains grow very large near the void surface, while the high stress levels are reached at some distance from the void, and the interaction of these stress and strain fields determines the porosity evolution. In some cases analysed, the porosity is present initially in the metal matrix, while in other cases voids nucleate gradually during the deformation process. It is found that interaction with the neighbouring voids reduces the critical stress for unstable cavity growth.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights © Elsevier
dc.subject.other Plasticity
dc.subject.other Instability
dc.subject.other Finite strains
dc.subject.other Ductile fracture
dc.title Influence of porosity on cavitation instability predictions for elastic–plastic solids
dc.type article
dc.description.status Publicado
dc.subject.eciencia Ingeniería Mecánica
dc.subject.eciencia Ingeniería Industrial
dc.identifier.doi 10.1016/j.ijmecsci.2006.08.004
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 210
dc.identifier.publicationissue 2
dc.identifier.publicationlastpage 216
dc.identifier.publicationtitle International Journal of Mechanical Sciences
dc.identifier.publicationvolume 49
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