1. Reference problem

1.1. Geometry

Uniaxial state: cylindrical specimen or elementary volume \(\mathrm{3D}\).

1.2. Material properties

Table 1.2-1

Neither the aging phenomenon nor the effect of temperature are taken into account in the Granger behavior relationship.

1.3. Boundary conditions and loads

On the \(\mathrm{AB}\) side: \({u}_{z}=0\)

A constant temperature of \(T=20°C\) and a constant humidity of \(h=1\) are uniformly imposed on the structure.

We load in traction from \(0\) to \(20\mathrm{MPa}\) in \(10s\). (imposed pressure such as \({\sigma }_{\mathrm{zz}}=-{\sigma }_{1}\mathrm{.}t\)) and loading is maintained for \(1\) years.