3D Beam
Use the Beam interface in 3D to model three-dimensional frameworks of uniaxial beams.
3D beams are defined on edges in 3D. They can be used separately or as stiffeners to 2D solid or shell elements.
Variables and Space Dimensions
The degrees of freedom (dependent variables) are the global displacements u, v, w in the global x, y, z directions and the global rotations θx, θy, and θz about the global x-, y-, and z-axes.
Figure 8-1: The degrees of freedom in the Beam interface,