Frame analysis GPS/GAS workbench with different cross sections 1

[sparck]

Hello everybody!
In Catia V5 GPS/GAS workbench is it possible to evaluate a frame structure with a different cross sections/type using 1D beams? I didn´t get it. It always give me a error on singularity detect (which I believe it relates to non coincident/non connect elements).

Regards,
Sparck

 

[MBCatia]

Hello if you want error code picture and your part's picture add here.
Best regards.