use the cp command

[soldato]

Hello everyone, I'm new.
I have a problem, I can't figure out how to use the cp command to couple the shift of some knots.

in particular I have a rectangular prism and I must impose shifts equal but opposite on opposite faces. in the design I try to explain it a little better (the prism is seen from above).

in practice the knots of face 1 must have the same shift in module, but with opposite sign of the nodes of face 2. same thing for face 3 and 4.

all to prevent rotation in z and translation in x and y to my prism, which in the problem that I am studying has no constraints, is only supported.

Thank you for your suggestions!

 

[soldato]

I'm trying to understand better. I seem to have understood that I do not have to use the cp command, but the cc that allows more options.

If I wanted to tie the shift in y of the knots on faces 1 and 2, I would write like this:

I don't know.

that would match:
1*uy_fa1 + 1*uy_fa2 = 0 , i.e. uy_fa1=-uy_fa2, which is the relationship I seek.

the problem now is: how do I select the knots of faces 1 and 2 and "to feed them" to the command?

Thanks again

 

[bermatt]

You said well, you have to make selections with nsel, with which you select the knots directly. or you can select the line with lsel and then tell him to select the nodes attached to that line with nsll. search for ansys' help these commands and you won't have a problem!