*HEADING
: Test extension of contact surface, small sliding, C3D20
*NODE, NSET=NB1
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=NB1
1,  9, 1
11, 19, 1
21, 29, 1
*NCOPY, CHANGE NUMBER=100, OLDSET=NB1, SHIFT, NEW SET=NB2
0.0, 0.0, 1.0

*NCOPY, CHANGE NUMBER=200, OLDSET=NB1, SHIFT, NEW SET=NB3
0.0, 0.0, 2.0

*NCOPY, CHANGE NUMBER=300, OLDSET=NB1, SHIFT, NEW SET=NB4
0.0, 0.0, 3.0

*NCOPY, CHANGE NUMBER=400, OLDSET=NB1, SHIFT, NEW SET=NB5
0.0, 0.0, 4.0

*NSET, NSET=NBLOCK1
NB1, NB2, NB3, NB4, NB5
*NODE, NSET=NBLOCK2
51, -0.15, 2.05,  0.85
52,  0.85, 2.05,  0.85
53,  0.85, 2.05, -0.15
54, -0.15, 2.05, -0.15
55, -0.15, 3.05,  0.85
56,  0.85, 3.05,  0.85
57,  0.85, 3.05, -0.15
58, -0.15, 3.05, -0.15
*NODE, NSET=NBLOCK3
61,  7.15, 2.05,  0.85
62,  8.15, 2.05,  0.85
63,  8.15, 2.05, -0.15
64,  7.15, 2.05, -0.15
65,  7.15, 3.05,  0.85
66,  8.15, 3.05,  0.85
67,  8.15, 3.05, -0.15
68,  7.15, 3.05, -0.15
*NODE, NSET=NBLOCK4
71, -0.15, 2.05, 4.15
72,  0.85, 2.05, 4.15
73,  0.85, 2.05, 3.15
74, -0.15, 2.05, 3.15
75, -0.15, 3.05, 4.15
76,  0.85, 3.05, 4.15
77,  0.85, 3.05, 3.15
78, -0.15, 3.05, 3.15
*NODE, NSET=NBLOCK5
81,  7.15, 2.05, 4.15
82,  8.15, 2.05, 4.15
83,  8.15, 2.05, 3.15
84,  7.15, 2.05, 3.15
85,  7.15, 3.05, 4.15
86,  8.15, 3.05, 4.15
87,  8.15, 3.05, 3.15
88,  7.15, 3.05, 3.15
*NSET, NSET=NBASE, GEN
1,   9, 1
101, 109, 1
201, 209, 1
301, 309, 1
401, 409, 1
*NSET, NSET=NALL
NBLOCK1,
NBLOCK2,
NBLOCK3,
NBLOCK4,
NBLOCK5,
*ELEMENT, TYPE=C3D20, ELSET=EBLOCK1
1, 23, 21, 1, 3, 223, 221, 201, 203, 22, 11, 2, 13,
222, 211, 202, 213, 123, 121, 101, 103
*ELGEN, ELSET=EBLOCK1
1, 4, 2, 1, 1,,,  2, 200, 50
*ELEMENT, TYPE=C3D8, ELSET=EBLOCK2
100, 57, 58, 54, 53, 56, 55, 51, 52
*ELEMENT, TYPE=C3D8, ELSET=EBLOCK3
101, 67, 68, 64, 63, 66, 65, 61, 62
*ELEMENT, TYPE=C3D8, ELSET=EBLOCK4
102, 77, 78, 74, 73, 76, 75, 71, 72
*ELEMENT, TYPE=C3D8, ELSET=EBLOCK5
103, 87, 88, 84, 83, 86, 85, 81, 82
*ELSET, ELSET=EALL
EBLOCK1,
EBLOCK2,
EBLOCK3,
EBLOCk4,
EBLOCK5,
*ELSET, ELSET=ETOP
1, 2, 3, 4, 51, 52, 53, 54
*SOLID SECTION, ELSET=EALL, MAT=MAT1
*MATERIAL,NAME=MAT1
*ELASTIC
3e6, 0.2
*surface, NAME=SBLOCK1, TRIM=YES
ETOP, S3,
*surface, NAME=SBLOCK2, TRIM=YES
EBLOCK2, S5
*surface, NAME=SBLOCK3, TRIM=YES
EBLOCK3, S5
*surface, NAME=SBLOCK4, TRIM=YES
EBLOCK4, S5
*surface, NAME=SBLOCK5, TRIM=YES
EBLOCK5, S5
*CONTACT PAIR, INTERACTION=NOSEP, SMALL SLIDING, EXTENSION ZONE=0.15, TYPE=SURFACE TO SURFACE
SBLOCK2, SBLOCK1
*CONTACT PAIR, INTERACTION=NOSEP, SMALL SLIDING, EXTENSION ZONE=0.15, TYPE=SURFACE TO SURFACE
SBLOCK3, SBLOCK1
*CONTACT PAIR, INTERACTION=NOSEP, SMALL SLIDING, EXTENSION ZONE=0.15, TYPE=SURFACE TO SURFACE
SBLOCK4, SBLOCK1
*CONTACT PAIR, INTERACTION=NOSEP, SMALL SLIDING, EXTENSION ZONE=0.15, TYPE=SURFACE TO SURFACE
SBLOCK5, 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, 3, 0.0
NBLOCK2, 1, 3, 0.0
NBLOCK3, 1, 3, 0.0
NBLOCK4, 1, 3, 0.0
NBLOCK5, 1, 3, 0.0
*PRINT, CONTACT=YES
*NODE PRINT, F=0
*EL PRINT, F=0
*CONTACT PRINT, FREQ=50
*OUTPUT,FIELD,FREQ=50
*CONTACT OUTPUT,VARIABLE=PRESELECT
CSTRESS,CDISP,
*END STEP