'mirror' constraint

[AdamBown]

I am trying to find a constraint in abaqus analogous to something called a 'mirror' constraint in our own software.

What the mirror constraint does is mirror the movements/deflections for a particular set of slave nodes, to a govening set of controlling master nodes, 1 to 1 mapping. This is slightly different to a kinematic coupling, since as I said, its mirrored about a central axis. Imagine the movements of the nodes on one edge of a slice of pie, mirroring the movements of the nodes from the other side of the pie, relative to a central 'mirror' plane.

Hope this makes sense...

Any thing similar in abaqus?
Cheers.

 

[AdamBown]

If the above is not possible, then alternatively , anyone know how you stop surface nodes dropping of the edge of another surface, e.g. by extending master surface or similar? Nodes in question that are dropping off of edge, are fixed in the plane of surface edge, so in theory they shouldnt srop off, but they still do!

 

[Chen1]

did you read about X-Symm and Y-Symm boundary conditions