*HEADING
: SELF CONTACT TEST, LINEAR UNDERLYING ELEMENTS, CLOSED SURFACE
**
*NODE
**
**
*ELEMENT, TYPE=CPE4H, ELSET=WHEEL
**
*SOLID SECTION, ELSET=WHEEL, MATERIAL=SIMPLE
1.,
*MATERIAL,NAME=SIMPLE
*HYPERELASTIC,N=1
1E3,
**
**
*ELSET, ELSET=INSIDE, GEN
*ELSET, ELSET=OUTSIDE, GEN
**
*surface, NAME=INSIDE
INSIDE,S4
*surface, NAME=OUTSIDE
OUTSIDE,S2
**
*rigid body,analytical surface=rtop, REF NODE=1001
*surface,name=rtop, TYPE=SEGMENTS
START, 0.0, 6.0
CIRCL, 1.0, 5.0, 0.0, 5.0
CIRCL, 0.0, 4.0, 0.0, 5.0
CIRCL,-1.0, 5.0, 0.0, 5.0
CIRCL, 0.0, 6.0, 0.0, 5.0
*rigid body,analytical surface=rbase, REF NODE=1002
*surface,TYPE=SEGMENTS, NAME=RBASE
START,-15.0, -4.0
LINE,   4.0, -4.0
*CONTACT PAIR, INTERACTION=BASE,type=surface
OUTSIDE, RBASE
*SURFACE INTERACTION, NAME=BASE
1.0,
*FRICTION
0.3
*CONTACT PAIR, INTERACTION=TOP,type=surface
OUTSIDE, RTOP
*SURFACE INTERACTION, NAME=TOP
1.0,
*FRICTION
0.3
*CONTACT PAIR, INTERACTION=INSIDE,type=surface
INSIDE,
*SURFACE INTERACTION, NAME=INSIDE
1.0,
**************************************
*STEP, NLGEOM, UNSYMM=YES
*STATIC
0.1,1.0
*BOUNDARY
102,1,1
 84,1,1
1002, 1,2
1002, 6,6
1001, 6,6
1001, 1,1
1001, 2,,-6.22
*PRINT,CONTACT=YES
*NODE PRINT, F=0
*EL PRINT,F=0
*CONTACT PRINT,FREQ=999
*CONTACT FILE,FREQ=999
*NODE FILE,FREQ=999
U,RF
*ENDSTEP
**
*STEP,NLGEOM,INC=200
*STATIC
0.02,1.0,,0.05
*BOUNDARY, OP=NEW
1001,1,1,-10.0
1001, 2,,-6.22
1001,6,6,-8.0
1002, 1,2
1002, 6,6
*ENDSTEP