*HEADING
 BEAM ELEMENTS: MODEL CHANGE VERIFICATION, ELASTIC MATERIAL
*PREPRINT,MODEL=YES,HISTORY=NO
**
** TEST 1: PIPE31
**
*NODE,NSET=NALL
1, 20.,10.
2, 25.,15.
3, 30.,20.
11,40.,10., 0.
12,40.,15., 1.
13,40.,20., 2.
*NSET,NSET=LEFT
1,11
*NSET,NSET=RLEFT
1, 
*NSET,NSET=TLEFT
11, 
*NSET,NSET=MID
12, 
*NSET,NSET=RIGHT
13, 
*NSET,NSET=TIP
3,13
*ELEMENT,TYPE=PIPE31,ELSET=TEST1
1, 1,2
2, 2,3
11,11,12
12,12,13
*ELSET,ELSET=REFER
1,2
*ELSET,ELSET=TEST
11,12
**
** TEST 2: PIPE32
**
*NODE,NSET=NALL
101, 60.,10.
102, 65.,15.
103, 70.,20.
111, 80.,10., 0.
112, 80.,15., 1.
113, 80.,20., 2.
*NSET,NSET=LEFT
101,111
*NSET,NSET=RLEFT
101, 
*NSET,NSET=TLEFT
111, 
*NSET,NSET=MID
112, 
*NSET,NSET=RIGHT
113, 
*NSET,NSET=TIP
103,113
*ELEMENT,TYPE=PIPE32,ELSET=TEST2
101,101,102,103
111,111,112,113
*ELSET,ELSET=REFER
101,102
*ELSET,ELSET=TEST
111,112
**
** TEST 3: PIPE31H
**
*NODE,NSET=NALL
201, 100.,10.
202, 105.,15.
203, 110.,20.
211, 120.,10., 0.
212, 120.,15., 1.
213, 120.,20., 2.
*NSET,NSET=LEFT
201,211
*NSET,NSET=RLEFT
201, 
*NSET,NSET=TLEFT
211, 
*NSET,NSET=MID
212, 
*NSET,NSET=RIGHT
213, 
*NSET,NSET=TIP
203,213
*ELEMENT,TYPE=PIPE31H,ELSET=TEST3
201, 201,202
202, 202,203
211, 211,212
212, 212,213
*ELSET,ELSET=REFER
201,202
*ELSET,ELSET=TEST
211,212
**
** TEST 4: PIPE32H
**
*NODE,NSET=NALL
301, 140.,10.
302, 145.,15.
303, 150.,20.
311, 160.,10., 0.
312, 160.,15., 1.
313, 160.,20., 2.
*NSET,NSET=LEFT
301,311
*NSET,NSET=RLEFT
301, 
*NSET,NSET=TLEFT
311, 
*NSET,NSET=MID
312, 
*NSET,NSET=RIGHT
313, 
*NSET,NSET=TIP
303,313
*ELEMENT,TYPE=PIPE32H,ELSET=TEST4
301, 301,302,303
311, 311,312,313
*ELSET,ELSET=REFER
301,302
*ELSET,ELSET=TEST
311,312
**
**  REMAINDER OF INPUT DECK SAME FOR ALL TESTS
**
*ELSET,ELSET=EALL
TEST,REFER
*BEAM SECTION,SECTION=PIPE,MATERIAL=ELAS,ELSET=EALL,ROTARY INERTIA=ISO
1.0,.05
0.,0.,-1.
*NORMAL
TEST,LEFT, -1., 0.,0.
TEST,MID,  -1., 0.,0.
TEST,RIGHT,-1., 0.,0.
*AQUA
-40.,40.0,32.2,1.987
2.,1.,,0.
2.,1.,,2000.
*WIND
1.987E-2,  500.,  17.411,     0.,   1.,  0.,    0.2
**   rho,    Z0,     c_x,    c_y,   dx,  dy,  alpha  
*AMPLITUDE, NAME=TEN
0.,10.,  1.,10.
*AMPLITUDE, NAME= A1_5
0., 1.5, 1., 1.5
*AMPLITUDE,NAME=ZERO
0.,0.,  1.,0.
*MATERIAL,NAME=ELAS
*ELASTIC
1000., .3
*DENSITY
2.0, 
**
**
*STEP,NLGEOM
 STEP #1: DISPLACE TEST SPECIMEN SO FINAL SHAPE IS
          IDENTICAL TO INITIAL SHAPE OF REFERENCE ELEMENT 
*STATIC
0.25,1.
*PRINT,MODEL CHANGE=YES
*BOUNDARY,OP=NEW
LEFT,1,5
RLEFT,6
TLEFT,6,6,-.78539816
RIGHT,1,1,10.0
RIGHT,2,2,0.0
RIGHT,3,3,-2.0
RIGHT,6,6,-.78539816
MID,1,1,5.0
MID,2,2,0.0
MID,3,3,-1.0
MID,6,6,-.78539826
*NODE PRINT,FREQ=999
RF, 
*EL PRINT,POSITION=CENTROID,FREQ=999
1,
S,E
*NODE FILE,NSET=LEFT,FREQ=999
RF, 
*EL FILE,POSITION=CENTROID,ELSET=TEST,FREQ=999
E, S
*END STEP
**
**
*STEP,NLGEOM
 STEP #2: REMOVE TEST ELEMENTS
*STATIC
1.,1.
*MODEL CHANGE,REMOVE,TYPE=ELEMENT
TEST,
*END STEP
**
**
*STEP,NLGEOM
 STEP #3: ADD TEST ELEMENTS BACK IN STRAIN-FREE
*STATIC
0.25,1.
*MODEL CHANGE,ADD=STRAINFREE,TYPE=ELEMENT
TEST, 
*BOUNDARY,OP=NEW,FIXED
LEFT,1,6
*END STEP
**
**
*STEP,NLGEOM,INC=20
 STEP #4: APPLY DLOAD TYPE P2
*STATIC
0.25,1.
*DLOAD,OP=NEW
TEST, P2,.05
REFER,P2,.05
*END STEP
**
**
*STEP,NLGEOM,INC=11
 STEP #5: APPLY DLOAD TYPE GRAV
*STATIC
0.25,1.
*DLOAD,OP=NEW
TEST, GRAV,15.,0.,1.,0.
REFER,GRAV,15.,0.,1.,0.
*END STEP
**
**
*STEP,NLGEOM
 STEP #6: APPLY DLOAD TYPE PX
*STATIC
0.25,1.
*DLOAD,OP=NEW
TEST, PX, 10.
REFER,PX, 10.
*END STEP
**
**
*STEP,NLGEOM
 STEP #7: APPLY DLOAD TYPE PY
*STATIC
0.25,1.
*DLOAD,OP=NEW
TEST, PY, 10.
REFER,PY, 10.
*END STEP
**
**
*STEP,NLGEOM
 STEP #8: APPLY DLOAD TYPE PI
*STATIC
0.25,1.
*DLOAD,OP=NEW
TEST, PI, 10., .8
REFER,PI, 10., .8
*END STEP
**
**
*STEP,NLGEOM
 STEP #9: APPLY DLOAD TYPE PE
*STATIC
0.25,1.
*DLOAD,OP=NEW
TEST, PE, 10., 1.2
REFER,PE, 10., 1.2
*END STEP
**
**
*STEP,NLGEOM
 STEP #10: APPLY DLOAD TYPE FDD
*DYNAMIC
.1,.1
*BOUNDARY,TYPE=VELOCITY,OP=NEW
LEFT,1,1, 10.0
LEFT,2,2,-20.0
LEFT,3,6
*DLOAD,OP=NEW
TEST,  FDD,   2.0, 7.5491, 1.2,   0.8,  TEN
REFER, FDD,   2.0, 7.5491, 1.2,   0.8,  TEN
*END STEP
**
**
*STEP,NLGEOM
 STEP #11: APPLY DLOAD TYPE FDT
*DYNAMIC
.01,.01
*BOUNDARY,TYPE=VELOCITY,OP=NEW
LEFT,1,1, 10.0
LEFT,2,2,-20.0
LEFT,3,6
*DLOAD,OP=NEW
TEST,  FDT,      ,  7.5491, 0.0381972,   0.8, 1.5, TEN
TEST,  FDT,      ,  7.5491, 0.0381972,   0.8,    , TEN
REFER, FDT,      ,  7.5491, 0.0381972,   0.8, 1.5, TEN
REFER, FDT,      ,  7.5491, 0.0381972,   0.8,    , TEN
*END STEP
**
**
*STEP,NLGEOM
 STEP #12: APPLY DLOAD TYPE FI
*DYNAMIC
.01,.01
*BOUNDARY,TYPE=ACCELERATION,OP=NEW
LEFT,1,1, 2.0
LEFT,2,2,-6.0
LEFT,3,6
*DLOAD,OP=NEW
TEST,   FI,      ,  1.2, 0.0,   0.7 
REFER,  FI,      ,  1.2, 0.0,   0.7 
*END STEP
**
**
*STEP,NLGEOM
 STEP #13: INTERMEDIATE STEP, MOVE BEAM UPWARDS, CLEAR LOAD
*DYNAMIC
.01,.01
*BOUNDARY,TYPE=ACCELERATION,OP=NEW
LEFT,1,1, 2.0
LEFT,2,2,-6.0
LEFT,3,6
*DLOAD,OP=NEW
*END STEP
**
**
*STEP,NLGEOM
 STEP #14: APPLY DLOAD TYPE WDD
*DYNAMIC
.01,.01
*BOUNDARY,TYPE=VELOCITY,OP=NEW
LEFT,1,1
LEFT,2,2, 25.
LEFT,3,6
*DLOAD,OP=NEW
TEST, WDD,      , 7.5491, 1.2,   0.5,  A1_5, ZERO
REFER,WDD,      , 7.5491, 1.2,   0.5,  A1_5, ZERO
*END STEP
**
**
*STEP,NLGEOM
 STEP #17: APPLY DLOAD TYPE WD1 AND WD2
*DYNAMIC
.01,.01
*BOUNDARY,TYPE=VELOCITY,OP=NEW
LEFT,1,1,-20.0
LEFT,2,6
*DLOAD,OP=NEW
TEST,  WD1,      , 7.5491, 1.2,       ,
TEST,  WD2,      , 7.5491, 1.2,       , 
REFER, WD1,      , 7.5491, 1.2,       ,
REFER, WD2,      , 7.5491, 1.2,       , 
*END STEP