Hello everybody,

I would like to do a model reduction with Workbench. I need to export 3 files: *.sub, *.tcms and *.cdb.

From what I could read and find, I have to make a model reduction to be able to export them. For the moment I would like to do it on a simple model: it is just a beam, fixed at 4 points with rigids. At each point, 3 springs are attached in X, Y and Z directions.

I used APDL commands as below:

/PREP7

CDWRITE, db, test, cdb

/SOLU

ANTYPE,7,NEW,,,CONTINUE,,NO

CMSOPT,FIX,10,,,,,TCMS,,,,,,

SEOPT,test,3,1,0,BACKSUB,ATP,,ON

LUMPM,OFF,,0

M,ALL,ALL,NODE,1,,,,,,

NMODES=10

nsel,s,,,MASTER_1

nsel,a,,,MASTER_2

nsel,a,,,MASTER_3

nsel,a,,,MASTER_4

CM,INTERFACE,node

/NERR,,99999999

EXBOPT,,1,1,0,3,0,0,0

OUTPR,NSOL,NONE,

SOLVE,ELFORM

SAVE,test,,,ALL

With a modal analysis, the solution is running if I suppress the springs. If I keep the spring, an unknown error occurs and the files are not exported. I don't understand why it isn't working with the springs. I tried different methods but nothing works...

The simulation with the springs is running without the command.

Do you have an idea how to proceed ?

The main goal of this model reduction is to be able to use these exported file to create a *.fbi file for Simpack.

I am quite new in Ansys, I usually use Hyperworks... I have the model in Hyperworks but the conversion to Ansys is not complete...

Thank you in advance for your help!

Kind regards,

Mathilde