MaterialElastic<dim>::MaterialElastic(SolidMechanicsModel & model, const ID & id) :
Material(model, id),
MaterialThermal<dim>(model, id) {
AKANTU_DEBUG_IN();
if(dim==2)
this->registerParam("Plane_Stress",plane_stress, false, _pat_parsmod, "Is plane stress" ); /// @todo Plane_Stress should not be possible to be modified after initMaterial (but before)