Hello,

I am a student working on a project that involves measuring the strain at certain points on a car rim. I created the rim with the software Ansa as FEM model and the solver Permas created the .fbi file to import into Simpack  . The import works, but when I want to measure the strain at a node with a result element during offline simulation, Simpack shows the error message:

"FATAL: The following error occured during preprocessing of the flexible body '\\\$S_Felge_VR.\\\$B_Audi_Felge':
        Cannot read stress data. Please provide stress data either in the fbi file or in the stress file.
        Reading stress from the .fbi file failed with the following errors:
           Fbi files     H:\\Daten\\Uni\\Master_FernUni\\Masterthesis\\Sim-Pack\\mbs3v2_mod_post.fbi
           don't contain stress data.
        Reading stress from the .stress file failed with the following errors:
           Cannot open stress file H:\\Daten\\Uni\\Master_FernUni\\Masterthesis\\Sim-Pack\\PKW-Sim\\main_model\\output/v04_c_CAR_Messfelge_flexible_rbe_innen_aussenring_combined_CDTire30-S_Felge_VR.B_Audi_Felge.stress.
           Please add an according .stress file in the results directory.
FATAL:   Evaluation (calc task 0) of Result Element
        \\\$S_Felge_VR.\\\$RS_DMS1:
        Cannot access stress / strain matrix: Cannot access stress / strain data"

How can I create the missing stress file?

I tried to use the input deck to generate the stress file, but only the solver Abaqus, Ansys, NX Nastran and MSC Nastran are supported.

The other option I found is the fbi generator, but it doesn`t work either.

Is there a way to create the .stress file in Simpack with the Permas solver?

thanks for your help.