An orthotropic specific damage model with inclusion consideration

A plastic yield function for ductile materials is discussed in order to predict damage during modeling of bulk metal forming processes. The variational formulation used by Rice and Tracey [J. Mech. Phys. Solids 17 (1969) 201] is modified for a cavity in an unit cell in contact with an inclusion. Fol...

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Bibliographic Details
Published inJournal of materials processing technology Vol. 143; pp. 337 - 341
Main Authors Bordreuil, Cyril, Salle, Emmanuelle, Boyer, Jean-Claude
Format Journal Article
LanguageEnglish
Published Elsevier B.V 20.12.2003
Elsevier
Subjects
Compressible plasticity
Ductile damage
Engineering Sciences
Mechanical engineering
Mechanics
Physics
Void with inclusion
Ductile damage
Void with inclusion
Compressible plasticity
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Summary:A plastic yield function for ductile materials is discussed in order to predict damage during modeling of bulk metal forming processes. The variational formulation used by Rice and Tracey [J. Mech. Phys. Solids 17 (1969) 201] is modified for a cavity in an unit cell in contact with an inclusion. Following Gurson [J. Eng. Mater. Technol. 99 (1977) 2], the influence of the plastic flow on the size and the shape of the void is analysed at the mesoscopic level. Then, the influences of the volume, of the shape of the void and the contact are introduced in a macroscopic plastic potential similar to the specific one proposed by Staub and Boyer [J. Mater. Proc. Technol. 79 (1998) 9]. This dilatational plastic potential and its corresponding plastic flow rule are implemented in a proprietary software and used for the numerical modelling of a workability test.
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ISSN:0924-0136
DOI:10.1016/S0924-0136(03)00448-5