9. Sorting modes/Characterization of mode_meca_*

For example, during seismic stresses in modal analysis, the modal base used must contain the modes that have a large effective unit mass in the direction of the earthquake.

The keyword factor FILTRE_MODE makes it possible to extract modes that meet a certain criterion from the mode_meca_*data structure. You can also use the command a command EXTR_MODE [U4.52.12] after CALC_MODES, for example, in order to concatenate several data structures such as mode_meca_*.