** SUBSTRUCTURE GENERATION FILE FOR substrframe_2level.inp
**substrframe_2level_gen1.inp SHOULD BE RUN FIRST.
** Create substructure for the column by combining two of the 
** half-column substructures
*ELEMENT,TYPE=Z91,ELSET=ZUPER,FILE=substrframe_2level_gen1
1,1,6
2,6,11
*SUBSTRUCTURE PROPERTY, ELSET=ZUPER
**
**
*STEP
*SUBSTRUCTURE GENERATE,TYPE=Z101,MASS MATRIX=YES,OVERWRITE
*RETAINED NODAL DOFS
1 ,
11,
*END STEP