*HEADING
EI22SSS4_PPEN: SURFACE-BASED PRESSURE PENETRATION TEST 
DEFORMABLE vs. DEFORMABLE SURFACES, CAX4 WITH
NON-MATCHING MESHES
*RESTART,WRITE, FREQ=1
*NODE
1,2,1.0
2,3.5,1.0
3,5.0,1.0
4,6.5,1.0
5,8.0,1.0
6,9.5,1.0
7,11.0,1.0
8,12.5,1.0
9,14.0,1.0
10,2,2.0
11,3.5,2.0
12,5.0,2.0
13,6.5,2.0
14,8.0,2.0
15,9.5,2.0
16,11.0,2.0
17,12.5,2.0
18,14.0,2.0
21,2.0,0
22,3.715,0
23,5.43,0
24,7.145,0
25,8.855,0
26,10.57,0
27,12.285,0
28,14.0,0
29,2.0,1.0
30,3.715,1.0
31,5.43,1.0
32,7.145,1.0
33,8.855,1.0
34,10.57,1.0
35,12.285,1.0
36,14.0,1.0
*NSET,NSET=NALL
1,2,3,4,5,6,7,8,9,10,
11,12,13,14,15,16,17,18
*ELEMENT,TYPE=CAX4,ELSET=TOP
1,1,2,11,10
2,11,2,3,12
3,4,13,12,3
4,13,4,5,14
5,15,14,5,6
6,16,15,6,7
7,7,8,17,16
8,8,9,18,17
*ELEMENT,TYPE=CAX4,ELSET=BOT
9,21,22,30,29
10,23,31,30,22
11,31,23,24,32
12,33,32,24,25
13,25,26,34,33
14,34,26,27,35
15,27,28,36,35
*NSET,NSET=BOT
21,22,23,24,25,26,27,28
*SOLID SECTION,ELSET=BOT,MATERIAL=MAT
*SOLID SECTION,ELSET=TOP,MATERIAL=MAT
*MATERIAL,NAME=MAT
*ELASTIC
1.E5,0.3
*DENSITY
1.0E-3, 
*surface,NAME=TOPS
1,S1
2,S2
3,S4
4,S2
5,S3
6,S3
7,S1
8,S1
*surface,NAME=BOTS
9,S3
10,S2
11,S4
12,S1
13,S3
14,S4
15,S3
*SURFACE INTERACTION,NAME=ISLS
1.0, 
*FRICTION
0., 
*CONTACT PAIR,INTERACTION=ISLS, SMALL SLIDING
TOPS,BOTS
*BOUNDARY
NALL,1,1
BOT,1,2
*STEP,INC=20
*STATIC
0.1,1
*BOUNDARY
10,2,2,-7.76E-3
11,2,2,-10.87E-3
12,2,2,-15.22E-3
13,2,2,-21.30E-3
14,2,2,-29.82E-3
15,2,2,-21.30E-3
16,2,2,-15.22E-3
17,2,2,-10.87E-3
18,2,2,-7.76E-3
*OUTPUT,FIELD
*CONTACT OUTPUT,VARIABLE=PRESELECT,SLAVE=TOPS,MASTER=BOTS
CSTRESS,
*CONTACT PRINT,SLAVE=TOPS,MASTER=BOTS
CSTRESS,
*ENDSTEP
*STEP, INC=20
*STATIC
0.01,1
*PRESSURE PENETRATION,SLAVE=TOPS,MASTER=BOTS
1,29,550
9,36,800
*CONTACT PRINT,SLAVE=TOPS,MASTER=BOTS,TOTAL=YES,FREQ=1
CSTRESS,PPRESS,CDISP
*OUTPUT,FIELD,FREQ=1
*CONTACT OUTPUT,VARIABLE=PRESELECT,SLAVE=TOPS,MASTER=BOTS
CSTRESS,PPRESS,CDISP
*PRINT,CONTACT=YES
*ENDSTEP
*STEP, INC=20
*STATIC
0.01,1
*PRESSURE PENETRATION,SLAVE=TOPS,MASTER=BOTS
1,29,650
9,36,900
*CONTACT PRINT,SLAVE=TOPS,MASTER=BOTS,TOTAL=YES,FREQ=1
CSTRESS,PPRESS,CDISP
*OUTPUT,FIELD,FREQ=1
*CONTACT OUTPUT,VARIABLE=PRESELECT,SLAVE=TOPS,MASTER=BOTS
CSTRESS,PPRESS,CDISP
*PRINT,CONTACT=YES
*ENDSTEP