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Groundcheck rotational DOF failed

Pioneer
Pioneer

Dear experts,

 

I have an issue with the Groundchecking of NX Nastran Models. I had a problem with a model regarding failed Strain energy check. Thus, I made a simplified Model to check if the strain energy check would pass then. I set the threshhold value to 1E-3. The Model is just a single component (block) with a hexagonal mesh with no connection to any other component. A picture of the simplified model is attached.

But the rotational DOFs just wouldn't pass the check  for G, N, F and A set:

RESULTS OF RIGID BODY CHECKS OF MATRIX KGG      (G-SET)  FOLLOW:
     PRINT RESULTS IN ALL SIX DIRECTIONS AGAINST THE LIMIT OF   1.000000E-03
           DIRECTION        STRAIN ENERGY        PASS/FAIL
           ---------        -------------        ---------
             1               2.003697E-06          PASS
             2               5.066729E-06          PASS
             3               2.630707E-05          PASS
             4               7.918223E-02          FAIL
             5               2.311569E-02          FAIL
             6               1.516146E-02          FAIL

 

Does anyone of you know how to avoid failed rotational modes? Are there any parameter settings I would have to define? I used the default parameters setting.