*HEADING
: NAFEMS TEST NL3: HARDENING WITH TWO VARIABLES UNDER LOAD CONTROL
T2D2 ELEMENTS
*RESTART,WRITE
*NODE
1, -2500.,0.
9, 0.,25.
*NGEN
1,9
*ELEMENT,TYPE=T2D2,ELSET=K2
1, 1,9
*ELEMENT,TYPE=SPRING1,ELSET=K3
11, 1
*ELEMENT,TYPE=SPRING1,ELSET=K1
12, 9
*SOLID SECTION,ELSET=K2,MATERIAL=M1
1.0, 
*MATERIAL,NAME=M1
*ELASTIC
5.0E7, 
*SPRING,ELSET=K1
2,
1.5,
*SPRING,ELSET=K3
1,
2.0,
*BOUNDARY
1,2
9,1
** Load=1100
*STEP,NLGEOM,INC=100
*STATIC
*CLOAD
1,1,1100.
*NODE PRINT,F=20
CF,U
*NODE FILE,F=20
CF,U
*EL FILE,F=0
*EL PRINT,F=0
*ENDSTEP
** Load=2200
*STEP,NLGEOM,INC=100
*STATIC
*CLOAD
1,1,2200.
*NODE FILE,F=20
CF,U
*EL FILE,F=0
*ENDSTEP
** Load=3300
*STEP,NLGEOM,INC=100
*STATIC
*CLOAD
1,1,3300.
*NODE FILE,F=20
CF,U
*EL FILE,F=0
*ENDSTEP
** Load=4400
*STEP,NLGEOM,INC=100
*STATIC
*CLOAD
1,1,4400.
*NODE FILE,F=20
CF,U
*EL FILE,F=0
*ENDSTEP
** Load=5500
*STEP,NLGEOM,INC=100
*STATIC
*CLOAD
1,1,5500.
*NODE FILE,F=20
CF,U
*EL FILE,F=0
*ENDSTEP
** Load=6600
*STEP,NLGEOM,INC=100
*STATIC
*CLOAD
1,1,6600.
*NODE FILE,F=20
CF,U
*EL FILE,F=0
*ENDSTEP