*HEADING
 GEOTECHNICAL ANALYSIS WITH COHAX4P ELEMENTS AND DIFFERENT MATERIALS: 
 COMPUTATION OF INITIAL STATE WITH ZERO (SMALL) DISPLACEMENTS
**
**   .................... PART DEFINITION
**
*PART,NAME=PART1
  *NODE,NSET=SOIL
   1, 
   2, 1.0,0.0
   3, 1.0,1.0
   4, 0.0,1.0
   5, 0.0,0.5
   6, 1.0,0.5
  *NSET,NSET=TOP
   3,4
  *NSET,NSET=BOTTOM
   1,2
  *NSET,NSET=LEFT
   1,4,5
  *ELEMENT,TYPE=COHAX4P,ELSET=SOIL
   1, 1,2,3,4,5,6
*END PART
**
**   .................... ASSEMBLY
**
*ASSEMBLY,NAME=GEOASSEMBLY
**
**   ... INSTANCES
**
*INSTANCE,NAME=IELA,PART=PART1
 0,0,0
 *COHESIVE SECTION, THICKNESS=SPECIFIED, MATERIAL=MATELA, ELSET=SOIL, RESPONSE=CONTINUU
*END INSTANCE
*INSTANCE,NAME=IPOR,PART=PART1
 3,0,0
** *COHESIVE SECTION, THICKNESS=SPECIFIED, MATERIAL=MATPOR, ELSET=SOIL, RESPONSE=CONTINUU
 *COHESIVE SECTION, THICKNESS=SPECIFIED, MATERIAL=MATELA, ELSET=SOIL, RESPONSE=CONTINUU
*END INSTANCE
*END ASSEMBLY
**
**   .................... SETS
**
*NSET,NSET=TOP
 IELA.TOP,IPOR.TOP
*NSET,NSET=BOTTOM
 IELA.BOTTOM,IPOR.BOTTOM
*NSET,NSET=LEFT
 IELA.LEFT,IPOR.LEFT
*NSET,NSET=SOIL
 IELA.SOIL,IPOR.SOIL
*ELSET,ELSET=SOIL
 IELA.SOIL,IPOR.SOIL
**
**   .................... MATERIALS
**
**   ... Elastic 
**
*MATERIAL,NAME=MATELA
*ELASTIC
 1000.0,0.3
***PERMEABILITY,SPECIFIC=10.0
** 1.0,0.0
**
**   ... Porous Elastic
**
*MATERIAL,NAME=MATPOR
*POROUS ELASTIC
 .026,.3,100.0
***PERMEABILITY,SPECIFIC=10.0
** 1.0,0.0
**
**   .................... INITIAL CONDITIONS
**
***INITIAL CONDITIONS,TYPE=RATIO
** SOIL,1.08,0.,1.08,1.
*INITIAL CONDITIONS,TYPE=STRESS
 SOIL,-10.,-10.,-10.
**
**   .................... ZERO BOUNDARY CONDITIONS
**
*BOUNDARY
 LEFT,   1,1
 BOTTOM, 2,2
**
**   .................... STEP
**
*STEP,UNSYM=YES
  GEOSTATIC INITIAL STRESS STATE
*GEOSTATIC,UTOL
*DLOAD
 SOIL,P3,100.
*BOUNDARY
 BOTTOM, 8,8
 TOP,    8,8, 100.0
*OUTPUT,FIELD,FREQ=10
*ELEMENT OUTPUT
 S,E,PE
*NODE OUTPUT
 U,POR
*END STEP