Karamba joint analysis

Hey
I am working on a complex structure and I need to do a stress analysis. It doesn't have to be precise but it is made of joints and rods. Is there a way to analyse in Karamba complex structure made of two different materials.
Node will be 3d printed in plastic (n2. in the picture attached) and rods (n1. in the picture) are in aluminium.
Is there a way to know behavior of the structure when assembled together. I did the analysis on Delanuay edges but they were considered connected as different beams.