*HEADING
LOAD-DISPLACEMENT ANALYSIS (EULER COLUMN):B23
*RESTART,WRITE
*NODE
*NSET,NSET=ONE
*ELEMENT,TYPE=B23
*ELGEN,ELSET=EALL
*ELSET,ELSET=PRIN
*BEAM GENERAL SECTION,SECTION=GENERAL,ELSET=EALL
 2.5422E-2, 1.23E-4, 0.0, 2.092E-3,4.5829E-6
 0.0, 0.0, -1.0
 2.1E11,8E10
*BOUNDARY
21,1,6
*STEP,NLGEOM,INC=150
*STATIC,RIKS
.0001,1.,,,6.0
*CLOAD
1,1,4.3719E5
*NODE PRINT,FREQUENCY=2
U,
RF,
*EL PRINT,ELSET=PRIN,FREQUENCY=0
S,
*NODE FILE,NSET=ONE
U,
RF,
*END STEP