*HEADING
Multiple step analysis of cantilever beam
*RESTART, WRITE
*NODE, NSET=BUILTIN
1, 0.0,0.0,0.0
41,0.0,0.5,0.0
*NGEN, NSET=BUILTIN
1,41,10
*NCOPY,CHANGE NUMBER=9, OLD SET=BUILTIN, NEW SET=TIP, SHIFT
1.0,0.0,0.0
0.0,0.0,0.0,0.0,1.0,0.0,0.0
*NFILL, NSET=ALL
BUILTIN,TIP,9,1
*NSET, NSET=BUILTIN
1,11,21,31,41
*NSET, NSET=TIP
10,20,30,40,50
*ELEMENT, TYPE=S4R, ELSET=EALL
1,1,2,12,11
*ELGEN, ELSET=EALL
1,4,10,1,9,1,4
*NSET,NSET=QA_TEST_TIP
TIP,
*ELSET,ELSET=QA_TEST_TIP
17,18,35,36,53,54,71,72
*ELSET,ELSET=QA_TEST_BASE
1,2,19,20,37,38,55,56
*SHELL SECTION,ELSET=EALL,MATERIAL=MAT1
0.1,
*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,1,6
*CLOAD, AMPLITUDE=RAMP
TIP,3,-1E5
*OUTPUT, FIELD, FREQ=100
*ELEMENT OUTPUT
S,LE
*NODE OUTPUT
U
*OUTPUT, FIELD, FREQ=10
*ELEMENT OUTPUT,ELSET=QA_TEST_TIP
LE,
*ELEMENT OUTPUT,ELSET=QA_TEST_BASE
S,
*NODE OUTPUT,NSET=QA_TEST_TIP
COORD,
*NODE FILE, NSET=QA_TEST_TIP,FREQ=999
U,
*EL FILE, ELSET=QA_TEST_BASE, FREQ=999
S,
*EL FILE, ELSET=QA_TEST_TIP, FREQ=999
EE,LE,PE
*MONITOR, DOF=3, NODE=50
*END STEP
*STEP
First springback analysis
*STATIC
0.1,1.0
*BOUNDARY
BUILTIN,1,6
*CLOAD, OP=NEW
*END STEP
*STEP, NLGEOM
Apply upward load to tip of beam
*DYNAMIC
0.01,0.1
*BOUNDARY
BUILTIN,1,6
*CLOAD, AMPLITUDE=RAMP
TIP,3,1.E6
*END STEP
*STEP, NLGEOM
Second springback analysis
*STATIC
0.1,1.0
*BOUNDARY
BUILTIN,1,6
*CLOAD, OP=NEW
*END STEP
*STEP, NLGEOM
Pull tip of beam
*STATIC
0.1,1.0
*BOUNDARY
BUILTIN,1,6
*CLOAD, AMPLITUDE=RAMP,OP=NEW
TIP,1,0.5E6
*END STEP
*STEP, NLGEOM
Third springback analysis
*STATIC
0.1,1.0
*BOUNDARY
BUILTIN,1,6
*CLOAD, OP=NEW
*END STEP
*STEP, NLGEOM
Apply torque to tip of beam
*DYNAMIC
0.01,0.1
*BOUNDARY, OP=NEW
BUILTIN,1,6
*CLOAD, OP=NEW, AMPLITUDE=RAMP
50,3,0.75E6
10,3,-0.75E6
*END STEP
*STEP, NLGEOM
Fourth (and final) springback analysis
*STATIC
0.1,1.0
*BOUNDARY, OP=NEW
BUILTIN,1,6
*CLOAD, OP=NEW
*END STEP