*HEADING
 ONE ELEMENT SUBSTRUCTURE
*NODE,NSET=NALL
3,
4,1.,
*ELEMENT, TYPE=T2D2, ELSET=EPLAS
2,3,4
*SOLID SECTION,MATERIAL=M2, ELSET=EPLAS
*MATERIAL, NAME=M2
*ELASTIC
3.E5,0.3
*PLASTIC
6.E3,0.0
12.E3,0.12
**
**
*STEP
*STATIC
0.1,1.0
*BOUNDARY
3,1,3
4,1,1,0.1
*ELFILE
S,E
*ENDSTEP
**
**
*STEP
*SUBSTRUCTURE GENERATE,TYPE=Z2,OVERWRITE
*RETAINED NODAL DOFS, SORTED=NO
NALL,
*BOUNDARY,OP=NEW
*SUBSTRUCTURE MATRIX OUTPUT, STIFFNESS=YES
*END STEP