Constitutive mechanical modeling of BSCCO powders

Arnaud Allais (1) , Christian-Eric Bruzek (1) , Nicolas Lallouet (1) , Pierre Montmitonnet (2) , Peter F. Hermann (3) , D. Pelissier (4) , Franck Toussaint (5)

1 NEXANS - Nexans Deutschland Industries GmbH & Co
2 CEMEF - Centre de Mise en Forme des Matériaux
3 Alcatel CIT
4 SIMaP - Science et Ingénierie des Matériaux et Procédés
5 SYMME - Laboratoire SYstèmes et Matériaux pour la MEcatronique

In order to feed a new mechanical model of the Powder In Tube (PIT) processing BSCCO/Ag conductors, a plastically compressible constitutive model of the powder is proposed and its parameters measured. We use a simple compressible model of the CAM-CLAY type with work hardening and softening depending on density variation. The unknown parameters of the model, the plastic properties of ceramic filaments, were evaluated from experimental studies of the real BSCCO powder by estimating the yield surface at a given density.

Mots clés: BSCCO; mechanical model; PIT; powder; superconductor

Domaines: Sciences de l'ingénieur [physics]; Matériaux

Arnaud Allais, Christian-Eric Bruzek, Nicolas Lallouet, Pierre Montmitonnet, Peter F. Hermann, et al.. Constitutive mechanical modeling of BSCCO powders. Applied Superconductivity Conference, Aug 2002, Houston - Texas, United States. p. 3026-3029, ⟨10.1109/TASC.2003.812061⟩. ⟨hal-00531655⟩