DCOUPLEBEAM

This command will add springs to the ends of beams and at beam intersection that are perpendicular to the z-axis to simulate nonlinear structures. The ACS SASSI UI finds all of the beams elements and determines the ends and intersections based connectivity with other elements. The command then adds a new node that the beam end and a spring with 10⁷ stiffness in all directions connect the new original beam end node to the new end node. The new springs are placed in a new group and each spring has its own spring constant so that each spring can be modified independently.