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.
...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?