EqualDOF command: Difference between revisions
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(Change terminology to retained/constrained) |
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| style="width:150px" | '''$rNodeTag ''' || integer tag identifying the retained | | style="width:150px" | '''$rNodeTag ''' || integer tag identifying the retained node (rNode) | ||
|- | |- | ||
| '''$cNodeTag ''' || integer tag identifying the constrained | | '''$cNodeTag ''' || integer tag identifying the constrained node (cNode) | ||
|- | |- | ||
| '''$dof1 $dof2 ...''' || nodal degrees-of-freedom that are constrained at the cNode to be the same as those at the rNode | | '''$dof1 $dof2 ...''' || nodal degrees-of-freedom that are constrained at the cNode to be the same as those at the rNode | ||
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equalDOF 2 3 1 3 5; | equalDOF 2 3 1 3 5; | ||
# impose the | # impose the displacements at dof's 1,3 and 5 of node 3 to be the same as those of node 2. | ||
Latest revision as of 16:14, 13 June 2020
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This command is used to construct a multi-point constraint between nodes.
| 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. |
EXAMPLE:
equalDOF 2 3 1 3 5;
- 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