*HEADING
EIA2PRSN: PORE PRESSURE COUPLED CONTACT  (CAX4RP) (NO SLIDING)
*RESTART, WRITE, F=2
*NODE,NSET=ALL
*NGEN,NSET=ALL
*NSET,NSET=BOT
*NSET,NSET=TOP
**
*ELEMENT,TYPE=CAX4RP,ELSET=ACTIVE
*SOLID SECTION,ELSET=ACTIVE,MATERIAL=ACTIVE
*HOURGLASS STIFFNESS
*MATERIAL,NAME=ACTIVE
*ELASTIC
30.E6,
*PERMEABILITY
 1.E-4,
**
*surface,NAME=MAS
2,S3
*surface,NAME=SLA
101,S1
*CONTACT PAIR,INTERACTION=ISLS
SLA, MAS
*SURFACE INTERACTION,NAME=ISLS
1.0,
**
*INITIAL CONDITIONS,TYPE=RATIO
ALL, 1.0
**
*STEP,INC=50,NLGEOM,AMP=STEP,UNSYMM=YES
Step 1
*SOIL, CONSOLIDATION
*CONTACT CONTROLS,AUTOMATIC TOLERANCES
*PRINT,CONTACT=YES
*BOUNDARY
BOT,1,2
TOP,2,2
BOT,8,8,2
TOP,8,8,1
*DLOAD
101,P3,10.
*CONTACT PRINT,F=10
PFL,PFLA,PTL,PTLA
TPFL,TPTL
**
*OUTPUT,FIELD,FREQ=10
*CONTACT OUTPUT
PFL,PFLA,PTL,PTLA
*NODE PRINT,F=10
POR,
*OUTPUT,FIELD,FREQ=10
*NODE OUTPUT
POR,
*EL PRINT, F=0
*END STEP
**