1. But#

Define a dynamic sub-structuring macro element.

In the context of a transitory, modal or harmonic analysis, with dynamic substructuring, the operator MACR_ELEM_DYNA projects the stiffness, mass and possibly damping matrices (harmonic analysis) on the modal basis of the substructure defined by DEFI_BASE_MODALE [U4.64.02], and the extraction of interface linkage matrices. The result consists of the projected matrices and the link matrices. It can be used multiple times with different orientations in the same model (see DEFI_MODELE_GENE [U4.65.02]). It can be printed to a file using the IMPR_MACR_ELEM [U7.04.33] command.

Produce a macr_elem_dyna concept.