*HEADING
: Test extension of contact surface, small sliding, CPE4
*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
*NGEN, NSET=NBLOCK1
1,  9, 1
11, 19, 1
21, 29, 1
*NODE, NSET=NBLOCK2
51, -0.30, 2.05, 0.0
53,  0.70, 2.05, 0.0
71, -0.30, 3.05, 0.0
73,  0.70, 3.05, 0.0
*NODE, NSET=NBLOCK3
57,  7.20, 2.05, 0.0
59,  8.20, 2.05, 0.0
77,  7.20, 3.05, 0.0
79,  8.20, 3.05, 0.0
*NSET, NSET=NBASE
1, 2, 3, 4, 5, 6, 7, 8, 9
*NSET, NSET=NALL
NBLOCK1,
NBLOCK2,
NBLOCK3,
*ELEMENT, TYPE=CPE4, ELSET=EBLOCK1
1, 23, 21, 1, 3
*ELGEN, ELSET=EBLOCK1
1, 4, 2, 1
*ELEMENT, TYPE=CPE4, ELSET=EBLOCK2
100, 73, 71, 51, 53
*ELEMENT, TYPE=CPE4, ELSET=EBLOCK3
101, 79, 77, 57, 59
*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