Turning Bending to False in Truss Elements Causing Rigid Body Modes


I have just been trying to turn off the bending in my truss elements by using the “Modify Element” function, and have noticed when I do so that rigid body modes are created. Could I please have some help with resolving this issue. I have attached current script.

Singular Hexagon Module - 13m edges.gh (75.1 KB)

Hi, when you set all of the diagonal elements to truss elements, the truss is free to rotate. When you apply horizontal loads to the system the system fails, but under vertical loads you can see that the system works.