*HEADING
 LARGE ROTATION VIA SPRING ELEMENT
*NODE
*NSET,NSET=TWO
*ELEMENT,TYPE=SPRINGA,ELSET=SPRING
*SPRING,ELSET=SPRING
200,
*STEP,NLGEOM,INC=30
*STATIC,DIRECT
0.033333334,1.0
*BOUNDARY
1,1,3
2,1
2,3
2,2,2,-3.0
*NODE FILE,NSET=TWO
U,RF
*OUTPUT,FIELD
*NODE OUTPUT,NSET=TWO
U,RF
*EL PRINT,SUMMARY=NO
S,E
*NODE PRINT,SUMMARY=NO
U,RF,CF
*END STEP