*RETAINED NODAL DOFS

Keyword type: step

This option is used to prescribe the nodal degrees of freedom which are kept in a *SUBSTRUCTURE GENERATE analysis. It cannot be used in any other sort of analysis.

There is one optional parameter: SORTED=NO. It is not possible to request a sorting of the degrees of freedom entered. The entries in the substructure stiffness matrix are in the order introduced by the user.

No transformation is allowed. Consequently, the global Carthesian system applies.

First line:

• *RETAINED NODAL DOFS
• Enter the parameter SORTED=NO (optional).

Following line:

• Node number or node set label
• First degree of freedom retained
• Last degree of freedom retained. This field may be left blank if only one degree of freedom is retained.
Repeat this line if needed.

Example:

*RETAINED NODAL DOFS
73,1,3


retains the degrees of freedom one through three (global) of node 73.

Example files: substructure.