Abstract
In the fuel rod, we want to get an estimation of the axial stresses {sigma}{sub rz} and {sigma}{sub zz} (Oz is the rod axis). As it is impossible with a classical axisymetric 1D displacement formulation, an 1D model was enriched by partial duality technics with a linear thermoelastic behavior law. We now want to generalize this model with a non-linear viscoelastic behavior law (as for the Zircaloy in the rod clad). It is proved that the viscoelastic implicit incremental problem can be transformed into a minimization, as in the elastic case. Then we can obtain the 1D viscoelastic enriched model exactly by the same process as in elasticity but on the incremental problem: writing the primal problem, partial dualizing approximating, obtaining a rough unidimensional problem. (author). 4 refs.
Citation Formats
Bonnieres, P de.
CYRANO 3 Code: implicit incremental formulation of a viscoplastic evolution problem derived by a partial duality technics; Code CYRANO 3: formulation implicite incrementale du probleme d`evolution viscoplastique obtenue par dualisation partielle.
France: N. p.,
1993.
Web.
Bonnieres, P de.
CYRANO 3 Code: implicit incremental formulation of a viscoplastic evolution problem derived by a partial duality technics; Code CYRANO 3: formulation implicite incrementale du probleme d`evolution viscoplastique obtenue par dualisation partielle.
France.
Bonnieres, P de.
1993.
"CYRANO 3 Code: implicit incremental formulation of a viscoplastic evolution problem derived by a partial duality technics; Code CYRANO 3: formulation implicite incrementale du probleme d`evolution viscoplastique obtenue par dualisation partielle."
France.
@misc{etde_10138718,
title = {CYRANO 3 Code: implicit incremental formulation of a viscoplastic evolution problem derived by a partial duality technics; Code CYRANO 3: formulation implicite incrementale du probleme d`evolution viscoplastique obtenue par dualisation partielle}
author = {Bonnieres, P de}
abstractNote = {In the fuel rod, we want to get an estimation of the axial stresses {sigma}{sub rz} and {sigma}{sub zz} (Oz is the rod axis). As it is impossible with a classical axisymetric 1D displacement formulation, an 1D model was enriched by partial duality technics with a linear thermoelastic behavior law. We now want to generalize this model with a non-linear viscoelastic behavior law (as for the Zircaloy in the rod clad). It is proved that the viscoelastic implicit incremental problem can be transformed into a minimization, as in the elastic case. Then we can obtain the 1D viscoelastic enriched model exactly by the same process as in elasticity but on the incremental problem: writing the primal problem, partial dualizing approximating, obtaining a rough unidimensional problem. (author). 4 refs.}
place = {France}
year = {1993}
month = {May}
}
title = {CYRANO 3 Code: implicit incremental formulation of a viscoplastic evolution problem derived by a partial duality technics; Code CYRANO 3: formulation implicite incrementale du probleme d`evolution viscoplastique obtenue par dualisation partielle}
author = {Bonnieres, P de}
abstractNote = {In the fuel rod, we want to get an estimation of the axial stresses {sigma}{sub rz} and {sigma}{sub zz} (Oz is the rod axis). As it is impossible with a classical axisymetric 1D displacement formulation, an 1D model was enriched by partial duality technics with a linear thermoelastic behavior law. We now want to generalize this model with a non-linear viscoelastic behavior law (as for the Zircaloy in the rod clad). It is proved that the viscoelastic implicit incremental problem can be transformed into a minimization, as in the elastic case. Then we can obtain the 1D viscoelastic enriched model exactly by the same process as in elasticity but on the incremental problem: writing the primal problem, partial dualizing approximating, obtaining a rough unidimensional problem. (author). 4 refs.}
place = {France}
year = {1993}
month = {May}
}