6. E modeling

6.1. Behavioral law and material parameters

The law of behavior tested “LEMAITRE_IRRA”, is documented in doc R5.03.08. This is a law of creep and enlargement behavior under irradiation for fuel assemblies. Values of the parameters used:

Settings	\(T=0°C\)	\(T=500°C\)
\(E(T)\)	\(2.E5\mathit{MPa}\)	\(1.E5\mathit{MPa}\)
\(\nu (T)\)	\(0.\)	\(0.\)
\(\alpha (T)\)	\(1.E-5{K}^{-1}\)	\(2.E\mathrm{-}5{K}^{\mathrm{-}1}\)
\(N(T)\)	\(2.3364\)	\(2.3364\)
\(1\mathrm{/}K(T)\)	\(1.E-6{(\mathit{MPa})}^{-1}\)	\(1.E-6{(\mathit{MPa})}^{-1}\)
\(1\mathrm{/}M(T)\)	\(0.207060772\)	\(0.207060772\)
\(L\)	\(0.\)	\(0.\)
\({\mathit{PHI}}_{}\mathit{ZERO}\)	4.240281E+21	4.240281E+21
\(\mathit{BETA}\)	\(1.2\)	\(1.2\)
\({\mathit{QSR}}_{K}\)	\(3321.093\)	\(3321.093\)

Finally, the last parameter GRAN_FO depends on both the temperature and the irradiation:

\({\mathit{GRAN}}_{\mathit{FO}}(T,\mathit{IRRA})=(1.51E-14T+1.542E-11){\mathit{IRRA}}^{0.396}\)

The irradiation values as a function of the times are as follows:

INST	IRRA
\(0\)	\(0\)
\(0.5\)	\(0\)
\(1\)	\(2\)

6.2. Results

Result at order number \(i\)	Name of the tested parameter	Name of the tested parameter	Reference type	tolerance
RESU_19	VMIS (MPa)	AUTRE_ASTER	1000	0.10%
RESU_19	TRACE (MPa)	AUTRE_ASTER	-1000	0.10%