*HEADING
CLAY PLASTICITY, TRIAXIAL EXTENSION TEST, CAX8R
*NODE
1, 
3,1.
23,1.,1.
21,,1.
*NGEN,NSET=BOTTOM
1,3
*NGEN,NSET=TOP
21,23
*NGEN
1,21,10
3,23,10
*NSET,NSET=SOIL,GENERATE
1,23
*NSET,NSET=LHS
1,11,21
*ELEMENT,TYPE=CAX8R,ELSET=SOIL
1,1,3,23,21,2,13,22,11
*SOLID SECTION,MATERIAL=SAMPLE, ELSET=SOIL
*MATERIAL,NAME=SAMPLE
*POROUS ELASTIC
.026,.3
*CLAY PLASTICITY
.174,1.,58.3
*INITIAL CONDITIONS,TYPE=RATIO
SOIL,1.08,0.,1.08,1.
*INITIAL CONDITIONS,TYPE=STRESS,GEOSTATIC
SOIL,-100.,0.,-100.,10.,1.
*STEP
  GEOSTATIC INITIAL STRESS STATE
*GEOSTATIC
*DLOAD
1,P2,100.
*EL PRINT
S, 
SINV, 
E, 
PE, 
EE, 
*NODE PRINT
U, 
RF, 
*OUTPUT,FIELD,FREQ=10
*ELEMENT OUTPUT
S,E,PE
*BOUNDARY
TOP,2
BOTTOM,2
LHS,1
*END STEP
*STEP,INC=20
  TRIAXIAL EXTENSION
*STATIC,DIRECT
1.,20.
*BOUNDARY
TOP,2,2,.4
*END STEP