*HEADING
EI11PII1: PORE PRESS. INTERFACE, INITIAL CONDITIONS, TYPE=PRESSURE  [CONTACT PAIR]
*RESTART,WRITE
*NODE,NSET=NALL
*NSET,NSET=NBOT
*NSET,NSET=NTOP
*ELEMENT,TYPE=CAX8P,ELSET=CONT
*surface,NAME=MAS
2,S3
*surface,NAME=SLA
3,S1
*CONTACT PAIR,INTERACTION=ISLS, Small sliding, TYPE=SURFACE TO SURFACE
SLA, MAS
*SURFACE INTERACTION,NAME=ISLS
0.5,
*SOLID SECTION,ELSET=CONT,MATERIAL=CONT
.5,
*MATERIAL,NAME=CONT
*ELASTIC
1.E8,
*PERMEABILITY
1.E-4,
*INITIAL CONDITIONS,TYPE=RATIO
NALL, 1.0
*INITIAL CONDITIONS,TYPE=PORE PRESSURE
NALL, -50.0
*BOUNDARY
NALL,1
NBOT,2
NTOP,2
**
** DUMMY EQUILIBRIUM STEP
**
*STEP
**, UNSYMM=YES
*SOILS
**
** GROUND NODE TO AVOID SINGULARITY
**
*BOUNDARY
1,8,8,-50.0
*OUTPUT,FIELD
*NODE OUTPUT
POR,
*END STEP