Constraints in Nodal System

Hello,

 

i have a curved shell-geometry on which i like to reorient the nodal coordinate systems to follow the curvature.

 

I only like to do that for the nodes on the edge.

 

With that nodal systems i like to assign rotational boundary condition following the curvature of the shell-geometry.

 

I am using OptiStruct for Solving.

 

How do i proceed to achieve this goal?

 

Thank you very much for your help!

 

With kind regards

 

Tim

 

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