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Yield criterion for a rigid-ideally plastic material with randomly oriented cracks


Journal title : Comptes Rendus Mécanique
Volume : 336
Issue : 3
Pagination : 297-303
Publication date : 01/03/2008

Document type > *Article de revue

Keywords > cracked media, ideal plasticity, porous medium, yield criterion

Research Unit > IRSN/DPAM/SEMCA/LEC

Authors > MONERIE Yann, VINCENT Pierre-Guy

Publication Date > 01/03/2008

Summary

This note presents an estimate of the yield criterion for a material with a von Mises matrix and randomly oriented ellipsoidal oblate cavities. The particular case where the cavities are penny-shaped cracks is detailed. The study is based on the problem of the unit cell made of an ellipsoidal oblate volume containing a confocal ellipsoidal oblate cavity. Bounds are looked for in order to verify the validity of the proposed estimate.

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