But === Create a Result SD containing the fields to be post-processed from the X- FEM method. It allows you to generate the following fields in order to post-process them on the cracked mesh: * fields of displacements, constraints and internal variables following the resolution of a mechanical problem * temperature field following the resolution of a thermal problem Produces a resultat_sdaster concept. The POST_MAIL_XFEM [:ref:`U4.82.21 `] command to generate the cracked mesh is essential before using POST_CHAM_XFEM.