*HEADING
: Adjust contact surface normal at symmetry plane
Small sliding example with CPE3 elements
Local cylindrical coordinate system
*SYSTEM
0.0, 0.0, 0.0, -1., -1., 0.
*NODE, NSET=NALL
1,  0.0,  1.5, 0.0
5,  1.5,  0.0, 0.0
11,  0.0,  2.0, 0.0
15,  2.0,  0.0, 0.0
21,  0.0,  2.5, 0.0
25,  2.5,  0.0, 0.0
31,  0.0,  2.6, 0.0
35,  2.6,  0.0, 0.0
41,  0.0,  3.0, 0.0
45,  3.0,  0.0, 0.0
51,  0.0,  3.5, 0.0
55,  3.5,  0.0, 0.0
99,  0.0,  0.0, 0.0
*NGEN, LINE=C, NSET=NALL
1,  5, 1, 99
11, 15, 1, 99
21, 25, 1, 99
31, 35, 1, 99
41, 45, 1, 99
51, 55, 1, 99
*ELEMENT,TYPE=CPE3
1,   1, 12, 11
2,   1,  2, 12
3,   2,  3, 12
4,  12,  3, 13
9,  11, 12, 21
10,  21, 12, 22
11,  12, 23, 22
12,  12, 13, 23
21,  31, 32, 42
22,  31, 42, 41
23,  32, 33, 42
24,  42, 33, 43
29,  41, 42, 51
30,  51, 42, 52
31,  42, 43, 53
32,  42, 53, 52
*ELGEN,ELSET=EALL
1, 2, 2, 4
2, 2, 2, 4
3, 2, 2, 4
4, 2, 2, 4
9, 2, 2, 4
10, 2, 2, 4
11, 2, 2, 4
12, 2, 2, 4
21, 2, 2, 4
22, 2, 2, 4
23, 2, 2, 4
24, 2, 2, 4
29, 2, 2, 4
30, 2, 2, 4
31, 2, 2, 4
32, 2, 2, 4
*SOLID SECTION, ELSET=EALL, MAT=MAT1
*MATERIAL,NAME=MAT1
*ELASTIC
3000.0,0.2
*ELSET,ELSET=EIN
9,10,11,12,13,14,15,16
*ELSET,ELSET=EOUT,GENE
21,28,1
*surface, NAME=MASTER
EIN,
*surface, NAME=SLAVE
EOUT,
*CONTACT PAIR,INTERACTION=NONE,SMALL SLIDING, TYPE=SURFACE TO SURFACE
SLAVE,MASTER
*SURFACE INTERACTION,NAME=NONE
*TRANSFORM, NSET=NALL, TYPE=C
0.0, 0.0, 0.0, 0.0, 0.0, 1.0
*BOUNDARY
1, YSYMM
11, YSYMM
21, YSYMM
31, YSYMM
41, YSYMM
51, YSYMM
5, YSYMM
15, YSYMM
25, YSYMM
35, YSYMM
45, YSYMM
55, YSYMM
**
** STEP 1 : Apply pressure load
**
*STEP, NLGEOM, INC=50
*STATIC
,1.0
*DLOAD
30, P3, 100.0
32, P2, 100.0
34, P3, 100.0
36, P2, 100.0
*PRINT, CONTACT=YES
*NODE PRINT, F=0
*EL PRINT, F=0
*CONTACT PRINT, FREQ=100
*CONTACT FILE, MASTER=MASTER, SLAVE=SLAVE, FREQ=100
CSTRESS, CDISP
*END STEP
**
** STEP 2 : Remove pressure load
**
*STEP, NLGEOM, INC=50
*STATIC
,1.0
*DLOAD, OP=NEW
30, P3, 0.0
32, P2, 0.0
34, P3, 0.0
36, P2, 0.0
*PRINT, CONTACT=YES
*NODE PRINT, F=0
*EL PRINT, F=0
*CONTACT PRINT, FREQ=100
*CONTACT FILE, MASTER=MASTER, SLAVE=SLAVE, FREQ=100
CSTRESS, CDISP
*END STEP