*HEADING
TERZAGHI CONSOLIDATION - FINITE STRAIN
*PREPRINT,HISTORY=NO
*RESTART,WRITE,FREQUENCY=2
*ELEMENT,TYPE=CPE4P,ELSET=ONE
1,1,3,23,21
*ELGEN,ELSET=EALL
1,10,20
*ELSET,ELSET=P1
6,7,8
*NODE
1,
2,25.
3,50.
201,,100.
202,25.,100.
203,50.,100.
*NGEN,NSET=NALL
1,201,10
2,202,20
3,203,10
*NSET,NSET=TOP
201,202,203
*NSET,NSET=BASE
1,2,3
*NSET,NSET=FILE
141,
*SOLID SECTION,MATERIAL=A1,ELSET=EALL
*MATERIAL,NAME=A1
*PERMEABILITY,SPECIFIC=1.0
.00002,1.
.0002,1.5
*ELASTIC
1.E8,.3
*INITIAL CONDITIONS,TYPE=RATIO
NALL,1.5
*BOUNDARY
10001,1,2
10001,6,6
*surface, NAME=SURF
EALL,
*rigid body,analytical surface=RIGID,REFNODE=10001
*surface,name=RIGID,TYPE=SEGMENTS
START, 0.0, 101.0
LINE,  0.0, .0
LINE, 50.0, .0
LINE,  50.0, 101.0
*SURFACE INTERACTION,NAME=HARD
1.,
*SURFACE BEHAVIOR,DIRECT
*CONTACT PAIR,INTERACTION=HARD,TYPE=SURFACE
SURF, RIGID
**
*AMPLITUDE,NAME=BC,TIME=TOTAL TIME,VALUE=ABSOLUTE
0.,1.E8,.01,0.
*STEP
SUDDENLY APPLIED LOAD
*SOILS,CONSOLIDATION
1.E-7,1.E-7
*DLOAD
10,P3,1.E8
*EL PRINT,FREQUENCY=25
S,MISES,E
*NODE PRINT,FREQUENCY=5
U,POR,RVT
*OUTPUT,FIELD,FREQ=0
*OUTPUT,HISTORY,FREQ=0
*END STEP
*STEP,INC=100,NLGEOM,UNSYMM=YES
*SOILS,CONSOLIDATION,UTOL=5.E7,END=SS
.001,100.,.001,100.,100.
*BOUNDARY,AMPLITUDE=BC
TOP,8
*OUTPUT,FIELD,FREQ=20
*ELEMENT OUTPUT,ELSET=ONE
E,
*NODE OUTPUT,NSET=FILE
U,
POR,
*NODE PRINT,F=0
*EL PRINT, F=0
*END STEP