*HEADING
: Test extension of contact surface , small sliding, CPE8
*NODE, NSET=NBLOCK1
1,  0.0,  0.0,  0.0
9,  8.0,  0.0,  0.0
11,  0.0,  1.0,  0.0
19,  8.0,  1.0,  0.0
21,  0.0,  2.0,  0.0
29,  8.0,  2.0,  0.0
*NODE, NSET=NBLOCK2
51, -0.3, 2.05, 0.0
52,  0.2, 2.05, 0.0
53,  0.7, 2.05, 0.0
61, -0.3, 2.55, 0.0
62,  0.2, 2.55, 0.0
63,  0.7, 2.55, 0.0
71, -0.3, 3.05, 0.0
72,  0.2, 3.05, 0.0
73,  0.7, 3.05, 0.0
*NODE, NSET=NBLOCK3
57,  7.2, 2.05, 0.0
58,  7.7, 2.05, 0.0
59,  8.2, 2.05, 0.0
67,  7.2, 2.55, 0.0
68,  7.7, 2.55, 0.0
69,  8.2, 2.55, 0.0
77,  7.2, 3.05, 0.0
78,  7.7, 3.05, 0.0
79,  8.2, 3.05, 0.0
*NGEN, NSET=NBLOCK1
1,  9, 1
11, 19, 1
21, 29, 1
*NSET, NSET=NBASE
1, 2, 3, 4, 5, 6, 7, 8, 9
*NSET, NSET=NALL
NBLOCK1,
NBLOCK2,
NBLOCK3,
*ELEMENT, TYPE=CPE8, ELSET=EBLOCK1
1, 23, 21, 1, 3, 22, 11, 2, 13
*ELGEN, ELSET=EBLOCK1
1, 4, 2, 1
*ELEMENT, TYPE=CPE4, ELSET=EBLOCK2
100, 73, 71, 51, 53, 72, 61, 52, 63
*ELEMENT, TYPE=CPE4, ELSET=EBLOCK3
101, 79, 77, 57, 59, 78, 67, 58, 69
*ELSET, ELSET=EALL
EBLOCK1,
EBLOCK2,
EBLOCK3,
*ELSET, ELSET=ETOP
1, 2, 3, 4
*SOLID SECTION, ELSET=EALL, MAT=MAT1
*MATERIAL,NAME=MAT1
*ELASTIC
3e6, 0.2
*surface, NAME=SBLOCK1, TRIM=YES
ETOP, S1
*surface, NAME=SBLOCK2, TRIM=YES
EBLOCK2, S3
*surface, NAME=SBLOCK3, TRIM=YES
EBLOCK3, S3
*CONTACT PAIR, INTERACTION=NOSEP, SMALL SLIDING, EXTENSION ZONE=0.15, TYPE=SURFACE TO SURFACE
SBLOCK2, SBLOCK1
*CONTACT PAIR, INTERACTION=NOSEP, SMALL SLIDING, EXTENSION ZONE=0.10, TYPE=SURFACE TO SURFACE
SBLOCK3, SBLOCK1
*SURFACE INTERACTION, NAME=NOSEP
1.0,
*SURFACE BEHAVIOR, NO SEPARATION
*STEP, NLGEOM, INC=50
Check that slave node intersect master surface at start of analysis
*STATIC
,1.0
*BOUNDARY
NBASE,   1, 2, 0.0
NBLOCK2, 1, 1, 0.0
NBLOCK2, 2, 2, 0.0
NBLOCK3, 1, 1, 0.0
NBLOCK3, 2, 2, 0.0
*PRINT, CONTACT=YES
*NODE PRINT, F=0
*EL PRINT, F=0
*CONTACT PRINT, FREQ=50
*CONTACT FILE, FREQ=50
CSTRESS, CDISP,
*END STEP