When using a Rigid Dynamics analysis system, the Tools group on the Solution Context tab provides the option Write Input File. You can write a file to use for co-simulation with Twin Builder (.fmu), or the .fmu file can be used for co-simulation with an external tool (co-simulation leader). For more details about the FMI standard and tools that support co-simulation with FMU, see fmi-standard.org.
To write the Rigid Dynamics input file:
Highlight the Rigid Dynamics object folder (or any object under it) in the tree.
From the Tools group on the Solution Context tab, select the option.
In the Save As dialog box, choose the type of file to write (.fmu) and specify a location and name for the file.
Note: From Release 2024 R1, the Rigid Dynamics solver exports .fmu files that comply with the FMI 2.0 standard by default.