# RigidLink command

This command is used to construct a single MP_Constraint object.

```tcl rigidLink $type $rNodeTag $cNodeTag ```

type

string-based argument for rigid-link type:

bar only the translational degree-of-freedom will be constrained to be exactly the same as those at the retained node

beam both the translational and rotational degrees of freedom are constrained.

rNodeTag

integer tag identifying the retained node

cNodeTag

integer tag identifying the constrained node

NOTE: The constraint object constructed for the beam option assumes small rotations

## Examples

rigidLink beam 2 3; # connect node 3 to node 2 via a rigid link-beam.

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