Reference problem ===================== Geometry --------- We consider a cube with side :math:`10\mathrm{mm}`. Material properties ---------------------- The material is isotropic elastic whose properties are: * :math:`E=100000\mathrm{MPa}` * :math:`\nu =0.3` Boundary conditions and loads ------------------------------------- On edge :math:`\mathrm{AB}`, an effort of :math:`10N` is being imposed. Initial conditions -------------------- Nil.