Warning: There are 7 rigid body modes in the system


I have to work with Grasshopper at university and I am still a total beginner. When I try to calculate the model with Karamba, I get the following error message: “1. There are 7 rigid body modes in the system. This means some parts can move freely without causing deformation. Try to use the ‘Eigen Modes’-component and activate the display of local coordinate axes: The first eigen-mode will be the rigid body motion.
If this does not help, check whether you have a pinned support directly attached to a hinge. A hinge introduces an extra node which may cause the problem. When analyzing a flat shell structure one has to lock the rotation perpendicular to the plate in at least one node.”

I tried to solve it, but didn’t manage to.

Also when I created the grid shape of the structure, I didn’t manage to make the structure into a grid in one piece, but had to sort of muddle the upper and lower parts together.

Maybe someone has a hint or can help me in any way.
Thank you so much!

Eigenes Projekt V.gh (708.3 KB)