fedoo.Mesh.get_element_local_frame

Mesh.get_element_local_frame(n_elm_gp: int = 1, guide=None, location: str | None = None, guide_direction: str | None = None) → ndarray

Return geometrical local frames at element evaluation points.

For beams, the first axis is the geometrical tangent and guide approximates the local y axis (or z axis when guide_direction='z'). For shells, the third axis is the geometrical normal and guide approximates the local x axis. A guide can be global, nodal, elemental, or defined at every requested evaluation point. Nodal guides are interpolated before projection onto the appropriate geometrical plane.