3.9.8: Principal States Transformation 🔷
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With the “Principal States Transformation”-component one can define a tensor via first and second principal vectors “Vec1” and “Vec2” and get the components for a given direction “DirX”. This allows to e.g. calculate the bending moments or in-plane forces of a shell for a section perpendicular to “DirX”. “N” specifies the direction normal of a plane onto which “Vec1” and “Vec2” get projected before performing the transformation.