There is another method to generate an OP2 file when using NX/Nastran except for the previous explanation about DMAP commands. This way is simple compared to using the complex DMAP commands. However, it takes longer time to analysis in NX/Nastran because it needs to perform the standard DMAP solution and data recovery after creating an RFI file. And then, the *.f06 file will be larger.
The following figure shows how to apply this method to DMAP commands.
In addition, this example is contained in the following path.
<Install Dir>\Toolkits\Flexible input files\NASTRAN\ NX_Nastran_Optimizer\Examples