2. Modeling

The objective of this modeling is to model a non-regression calculation for a single relative humidity (HR = 0.805).

2.1. Characteristics of modeling

• Modeling in D_ PLAN_THH2MS and D_ PLAN_THH2MD.

• 700 \(\mathit{QUAD}8\) elements.

• Discretization in time: 1 time step for a total calculation time of 3600s.

2.2. Modeling result

The constraints field “SIEF_NOEU” is calculated to be able to recover the effective constraint in the X direction (“SIXX”) on any node (here the N2 node) and for the final moment.

The values of “SIXX” are compared to the analytical value \(-d{\mathrm{\sigma }}_{p}\) for HR=0.805 presented in section 2.2 and are shown in the table below.

HR tested	\(-d{\mathrm{\sigma }}_{p}\) (Mpa) (analytics)	SIXX (MPa)	\((\text{\%})\) gap
0.805	-7.950	-7.258	8.7

Table 2.2-1- Effective stress comparison