How to create RBE2 between the end edges of a cylinder and end nodes of a beam element in ANSYS APDL?

Question

I have a cylinder with shell mesh. on its axis I have a beam with the same length of the cylinder. I want to create an RBE2 between each end edge nodes of the cylinder and the corresponding end node of the beam. how is this possible using APDL ?

Answer 1

Assuming top_beam_n is a component with the upper end node of the beam, top_cyl_n is a component with the upper end nodes of the cylinder, you can do:

cmsel,s,top_beam_n,node
*get,num_top_beam,node,all,num,min
cmsel,s,top_cyl_n,node
cerig,num_top_beam,all,all