I tried to analyze the beams, but the AnalyzeThI component turned out to red with this error:
"1. Singular Stiffness-matrix: Can not solve static system. Make sure that boundary conditions are set so that the structure can not move in rigid body modes. When you analyze a flat shell structure lock the rotation perpendicular to the plate in at least one node. Use the 'Eigen Modes'-component and activate the display of local coordinate axes: The first eigenmode will be the rigid body motion."