*HEADING
 GEOTECHNICAL ANALYSIS WITH CPE8P,CPE8RP,CPE8PH and CPE8RPH ELEMENTS 
 AND DIFFERENT MATERIALS: COMPUTATION OF INITIAL STATE WITH 
 ZERO (SMALL) DISPLACEMENTS
**
**   .................... PART DEFINITION
**
*PART,NAME=PART2
  *NODE,NSET=SOIL
   1, 0.0, 0.0 
   2, 1.0, 0.0
   3, 1.0, 1.0
   4, 0.0, 1.0
   5, 0.5, 0.0
   6, 1.0, 0.5
   7, 0.5, 1.0
   8, 0.0, 0.5
   **
   9, 2.0, 0.0 
  10, 3.0, 0.0
  11, 3.0, 1.0
  12, 2.0, 1.0
  13, 2.5, 0.0
  14, 3.0, 0.5
  15, 2.5, 1.0
  16, 2.0, 0.5
  *NSET,NSET=TOP
   3,4,7, 11,12,15
  *NSET,NSET=BOTTOM
   1,2,5, 9,10,13
  *NSET,NSET=LEFT
   1,4,8, 9,12,16
  *ELEMENT,TYPE=CPE8P,ELSET=SOIL
   1, 1,2,3,4, 5,6,7,8
  *ELEMENT,TYPE=CPE8RP,ELSET=SOIL
   2, 9,10,11,12, 13,14,15,16
*END PART
*PART,NAME=PART4
  *NODE,NSET=SOIL
   1, 0.0, 0.0 
   2, 1.0, 0.0
   3, 1.0, 1.0
   4, 0.0, 1.0
   5, 0.5, 0.0
   6, 1.0, 0.5
   7, 0.5, 1.0
   8, 0.0, 0.5
   **
   9, 2.0, 0.0 
  10, 3.0, 0.0
  11, 3.0, 1.0
  12, 2.0, 1.0
  13, 2.5, 0.0
  14, 3.0, 0.5
  15, 2.5, 1.0
  16, 2.0, 0.5
   **
  17, 4.0, 0.0 
  18, 5.0, 0.0
  19, 5.0, 1.0
  20, 4.0, 1.0
  21, 4.5, 0.0
  22, 5.0, 0.5
  23, 4.5, 1.0
  24, 4.0, 0.5
   **
  25, 6.0, 0.0 
  26, 7.0, 0.0
  27, 7.0, 1.0
  28, 6.0, 1.0
  29, 6.5, 0.0
  30, 7.0, 0.5
  31, 6.5, 1.0
  32, 6.0, 0.5
  *NSET,NSET=TOP
   3,4,7, 11,12,15, 19,20,23, 27,28,31
  *NSET,NSET=BOTTOM
   1,2,5, 9,10,13, 17,18,21, 25,26,29
  *NSET,NSET=LEFT
   1,4,8, 9,12,16, 17,20,24, 25,28,32
  *ELEMENT,TYPE=CPE8P,ELSET=SOIL
   1, 1,2,3,4, 5,6,7,8
  *ELEMENT,TYPE=CPE8RP,ELSET=SOIL
   2, 9,10,11,12, 13,14,15,16
  *ELEMENT,TYPE=CPE8P,ELSET=SOIL
   3, 17,18,19,20, 21,22,23,24
  *ELEMENT,TYPE=CPE8RP,ELSET=SOIL
   4, 25,26,27,28, 29,30,31,32
*END PART
**
**   .................... ASSEMBLY
**
*ASSEMBLY,NAME=GEOASSEMBLY
**
**   ... INSTANCES
**
*INSTANCE,NAME=IELA,PART=PART4
 0,0,0
 *SOLID SECTION,MATERIAL=MATELA, ELSET=SOIL
*END INSTANCE
*INSTANCE,NAME=IPOR,PART=PART2
 0,3,0
 *SOLID SECTION,MATERIAL=MATPOR, ELSET=SOIL
*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
 0.5,1.0
*DLOAD
 SOIL,P2,100.
*BOUNDARY
 BOTTOM, 8,8
 TOP,    8,8, 100.0
*OUTPUT,FIELD,FREQ=1
*ELEMENT OUTPUT
 S,E,PE
*NODE OUTPUT
 U,POR
*END STEP