Core elimination in Size to shuffle optimization

Dani_20

Hello, 

 

I am trying to perform  a carbon fiber monocoque optimization. I have made freesize and the result is logic. However, when I make the size optimization, the output file (fem) has no core, only the carbon fiber layers and the non design laminate. I have put manufacture thickness of the plies, including the core, update the laminate and control card.

 

Anybody knows why this could happened?

 

Thank you