*HEADING
Multiple step analysis of cantilever beam
*RESTART, WRITE
*NODE, NSET=BLTBOT
1, 0.0,0.0,0.0
41,0.0,0.5,0.0
*NGEN, NSET=BLTBOT
1,41,10
*NCOPY,CHANGE NUMBER=9, OLD SET=BLTBOT, NEW SET=TIPBOT, SHIFT
1.0,0.0,0.0
0.0,0.0,0.0,0.0,1.0,0.0,0.0
*NFILL, NSET=ALLBOT
BLTBOT,TIPBOT,9,1
*NCOPY,CHANGE NUMBER=150, OLD SET=ALLBOT, NEW SET=ALLTOP, SHIFT
0.0,0.0,0.1
0.0,0.0,0.0,0.0,1.0,0.0,0.0
*NFILL, NSET=ALL
ALLBOT,ALLTOP,3,50
**
** 
*NSET, NSET=BUILTIN, GENERATE
1,191,10
*NSET, NSET=TIP, GENERATE
10,200,10
*ELEMENT, TYPE=C3D8R, ELSET=EALL
1,1,2,12,11,51,52,62,61
*ELGEN, ELSET=EALL
1,4,10,1,3,50,4,9,1,12
*SOLID SECTION,ELSET=EALL,MATERIAL=MAT1
*MATERIAL,NAME=MAT1
*ELASTIC
200.E9,0.3
*PLASTIC
380.E6,0.00
580.E6,0.35
780.E6,0.50
*DENSITY
7800.,
*AMPLITUDE, NAME=RAMP
0.0,0.0,1.0,1.0
*STEP, NLGEOM
Apply downward load to tip of beam
*DYNAMIC
0.1,1.0
*BOUNDARY
BUILTIN,1,3
*CLOAD, AMPLITUDE=RAMP
TIP,3,-0.25E5
*OUTPUT, FIELD, FREQ=1
*ELEMENT OUTPUT, VARIABLE=PRESELECT
*NODE OUTPUT, VARIABLE=PRESELECT
*NODE FILE, NSET=TIP, FREQ=999
U,
*EL FILE, ELSET=EALL, FREQ=999
S,EE,LE,PE
*MONITOR, DOF=3, NODE=50
*END STEP
*STEP
First springback analysis
*STATIC
0.1,1.0
*BOUNDARY
BUILTIN,1,3
*CLOAD, OP=NEW
*END STEP
*STEP, NLGEOM
Apply upward load to tip of beam
*DYNAMIC
0.001,0.01
*BOUNDARY
BUILTIN,1,3
*CLOAD, AMPLITUDE=RAMP
TIP,3,0.25E7
*END STEP
*STEP, NLGEOM
Second springback analysis
*STATIC
0.1,1.0
*BOUNDARY
BUILTIN,1,3
*CLOAD, OP=NEW
*END STEP
*STEP, NLGEOM
Pull tip of beam
*STATIC
0.1,1.0
*BOUNDARY
BUILTIN,1,3
*CLOAD, AMPLITUDE=RAMP,OP=NEW
TIP,1,0.5E5
*END STEP
*STEP, NLGEOM
Third springback analysis
*STATIC
0.1,1.0
*BOUNDARY
BUILTIN,1,3
*CLOAD, OP=NEW
*END STEP
*STEP, NLGEOM
Apply torque to tip of beam
*DYNAMIC
0.001,0.01
*BOUNDARY, OP=NEW
BUILTIN,1,3
*CLOAD, OP=NEW, AMPLITUDE=RAMP
50, 3, 0.75E7
100,3, 0.75E7
150,3, 0.75E7
200,3, 0.75E7
10, 3,-0.75E7
60, 3,-0.75E7
110,3,-0.75E7
160,3,-0.75E7
*END STEP
*STEP, NLGEOM
Fourth (and final) springback analysis
*STATIC
0.1,1.0
*BOUNDARY, OP=NEW
BUILTIN,1,3
*CLOAD, OP=NEW
*END STEP