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DMIG element do not work

Valued Contributor
Valued Contributor

Hi everybody, I am trying to insert a stiffness matrix in a FEM model. In particular I am modelling a 1D beam and I want to sobstitute one element with a DMIG stiffness matrix.

To do that I create the .fem and .sim in NX Nastran and than I replace one element, I export the simulation in .dat file and using the text editor, I insert the DMIG stiffness matrix.

I follow the example in NastranNXGuide pag. 308 but without good results. In attachment you can see two different version of the input file where I define the DMIG matrix.


The problem is given by this message:

         ***WARNING : NASTRAN input file contains recognized but unsupported NX card types.

         5 DMIG

         ...Total of 5 cards skipped.
         Bulk data cards evaluated


In addiction in some cases I notice an additional error where the the colomn are imported in the wrong format.


Can someone help me?


Re: DMIG element do not work

Siemens Honored Contributor Siemens Honored Contributor
Siemens Honored Contributor

Hi @AlbertoM,

I would suggest posting this in the NX Nastran customer forum.

Regards, Ben