*HEADING
: SURFACE-BASED PRESSURE PENETRATION TEST
  WITH RIGID SURFACE, CPE4
  TEST 9-DIGIT LABELS
*PREPRINT, ECHO=YES,HIST=YES,MODEL=YES
RESTART,WRITE, FREQ=1
*NODE
*NSET,NSET=NALL
*ELEMENT,TYPE=CPE4,ELSET=BOT
*ELEMENT,TYPE=R2D2,ELSET=TOP
*NSET,NSET=TOP
*RIGID BODY,ELSET=TOP,REFNODE=900000100
*SOLID SECTION,ELSET=BOT,MATERIAL=MAT
*MATERIAL,NAME=MAT
*ELASTIC
1.E5,0.3
*DENSITY
1.0E-3,
*surface,NAME=TOPS
TOP,SPOS
*surface,NAME=BOTS
900000001,S1
900000002,S2
900000003,S4
900000004,S2
900000005,S3
900000006,S3
900000007,S1
900000008,S1
*SURFACE INTERACTION,NAME=ISLS
1.0,
*FRICTION
0.,
*CONTACT PAIR,INTERACTION=ISLS, SMALL SLIDING
BOTS,TOPS
*BOUNDARY
900000100,1,2
900000100,6,6
NALL,2,2
*STEP,INC=20
*STATIC
0.1,1
*BOUNDARY
900000010,1,1,-3.75E-3
900000011,1,1,-5.25E-3
900000012,1,1,-7.35E-3
900000013,1,1,-10.29E-3
900000014,1,1,-14.406E-3
900000015,1,1,-10.29E-3
900000016,1,1,-7.35E-3
900000017,1,1,-5.25E-3
*CONTACT PRINT,SLAVE=BOTS,MASTER=TOPS
CSTRESS,
*OUTPUT,FIELD
*CONTACT OUTPUT,SLAVE=BOTS,MASTER=TOPS
CSTRESS,
*ENDSTEP
*STEP, INC=20
*STATIC
0.01,1
*PRESSURE PENETRATION,SLAVE=BOTS,MASTER=TOPS
*CONTACT PRINT,SLAVE=BOTS,MASTER=TOPS,TOTAL=YES,FREQ=1
CSTRESS,PPRESS,CDISP
*PRINT,CONTACT=YES
*OUTPUT,FIELD
*CONTACT OUTPUT,SLAVE=BOTS,MASTER=TOPS
CSTRESS,PPRESS,CDISP
*OUTPUT,HISTORY
*CONTACT OUTPUT,SLAVE=BOTS,MASTER=TOPS
CSTRESS,PPRESS,CDISP
*ENDSTEP
*STEP, INC=20
*STATIC
0.01,1
*PRESSURE PENETRATION,SLAVE=BOTS,MASTER=TOPS
*CONTACT PRINT,SLAVE=BOTS,MASTER=TOPS,TOTAL=YES,FREQ=1
CSTRESS,PPRESS,CDISP
*PRINT,CONTACT=YES
*ENDSTEP