Shells elemnts analysis

hi,

I have a question. shells elements in Karamba as stated in one of the discussion are plates elements with axial forces in the plane and shear forces in the plane. I have a 3d models using shell elements. We used a simple model for verification. Resultant forces are correct, but nodal displacements are 1/8 smaller than nodal displacement obtain by a QA/QC FEM software using elements with flexural forces included in the analysis. Geometry steel material and support constraints are identical on the two models. Does it means Karamba can only analysis area elements with only axial loads?

Could you help me with this topic?

Thanks