FEMAP Elemental Co-ordinate system For Sandwich Structure

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Hi Everyone, How do you assign a CSYS for laminate shell elements if its a composite structure with a ramp and curvatures in the geometry. Because THis is a 2D FEM model, everytime i change the elemental CSYS the results are affected, if i assign the CSYS along the ribbon direction then how do i control the elemental CSYS along ribbon direction. Because this does affect the OUTPUT. Thanks in advance