Karamba - Sandwich beam


(Marina) #1


I am quite new on Karamba. I was trying to model a sandwich beam.
I have created a top and bottom beam element, and to simulate the core, I have made a shell element with the same thickness of the base of my beam.

My model seems to work fine, I don’t get any error. But the result in the displacement differs by 16% with my analytical calculations. I have also tried to make a model with another FEM software, and the result confirms that the analytical calculations are fine, while the Karamba model is not.

What is wrong in the Karamba model? I guess I am missing something…
04.Sandwich Beam Model.gh (51.4 KB)

Thank you in advance,


Hello Marina,
Did you try to refine the shell mesh (e.g. 40 sections in longitudinal direction, 10 over the height)?

(Marina) #3

Hi Clemens,

Thank you for the suggestion… now the result is way more accurate!

Thank you a lot,