Summary of results ====================== This test validates in :math:`\mathrm{2D}` plane deformation the 3 laws of behavior LEMAITRE, VISC_ENDO_LEMA (without damage) and VISC_TAHERI (without plasticity) whose equations relating to viscosity are governed by LemaƮtre's law. The differences between the models are less than :math:`1\text{\%}`.