Title :
Constitutive mechanical modeling of BSCCO powders
Author :
Allais, A. ; Bruzek, C.E. ; Lallouet, N. ; Montmitonnet, P. ; Herrmann, P. ; Pelissier, D. ; Toussaint, F.
Author_Institution :
Nexans Supercond. R&D Centre, Huerth, Germany
fDate :
6/1/2003 12:00:00 AM
Abstract :
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.
Keywords :
bismuth compounds; calcium compounds; high-temperature superconductors; multifilamentary superconductors; plastic deformation; silver; sintering; strontium compounds; superconducting tapes; work hardening; BSCCO powders; BSCCO/Ag conductors; BiSrCaCuO-Ag; Powder In Tube processing; ceramic filaments; constitutive mechanical modeling; density variation; high temperature superconductor; plastically compressible constitutive model; work hardening; work softening; yield surface; Bismuth compounds; Ceramics; Conductors; Feeds; Mechanical variables measurement; Plastics; Powders; Softening; Stress; Superconducting filaments and wires;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.812061
