1. Reference problem

1.1. Geometry

It is a material point, processed by SIMU_POINT_MAT in 3D or in D_ PLANselon modeling.

1.2. Material properties

The material obeys the law of elastic behavior, on which viscous regularization is superimposed. The parameters of behavioral validity:

\(E=200000\text{MPa}\)	Young’s module
\(\mathrm{\nu }=0.3\)	Poisson’s ratio
\(k=100000\text{MPa}\)	Stiffness of viscous regularization
\(\mathrm{\tau }=10\text{s}\)	Characteristic time of viscous regularization

1.3. Boundary conditions and loads

It is a request at a material point (SIMU_POINT_MAT). All deformation components are imposed; they are all zero except EPXX. A deformation rate of \({\dot{\epsilon }}_{\mathit{xx}}={10}^{-3}{\text{s}}^{-1}\) is prescribed for 20 s, until a deformation of 2% is reached.

1.4. Initial conditions

This is the natural state, all fields are zero.