# EqualDOF command

This command is used to construct a multi-point constraint between nodes.

```tcl equalDOF $rNodeTag $cNodeTag $dof1 $dof2 ... ```

rNodeTag

integer tag identifying the retained node (rNode)

cNodeTag

integer tag identifying the constrained node (cNode)

$dof1 $dof2 ...

nodal degrees-of-freedom that are constrained at the cNode to be the same as those at the rNode

Valid range is from 1 through ndf, the number of nodal degrees-of-freedom.

## Examples

equalDOF 2 3 1 3 5;

  1. impose the displacements at dof's 1,3 and 5 of node 3 to be the same as those of node 2.

REFERENCE:

Cook, R.D., Malkus, D.S., Plesha, M. E., and Witt, R. J., "Concepts and Applications of Finite Element Analysis," 4th edition, John Wiley and Sons publishers, 2002.

Code Developed by: fmk