Hi,
I wrote a code in iLogic that generates a Shell Element Idealization, mesh, loads and constraints.
The thickness of the shell elements is set to 1mm by the code.
When clicking "Run all rules" it creates a model in Nastran with the given input and everything looks fine. The Shell thickness is set to 1 mm as requested.
BUT when I click "Solve with Nastran" I get an error, E5008 saying: NON-ZERO STIFFNESS MATRIX REQUIRED FOR ANALYSIS.
When I check the Shell Element thickness it is set to 0 mm.
Why is the thickness set to zero after solving the model??
If I start over from the beginning and click "Run all rules" but instead of Solve the model I click "Edit" on the Shell Elements. I erase the 1 mm thickness and rewrite it with exactly the same, 1 mm.
Solving the model after this it works out perfectly. WHY?
