*HEADING
: SIMPLE CONTACT TEST, FINITE SLIDING CONTACT WITH FRICTION, DEFORMABLE
*RESTART,WRITE
*NODE
1,0.0,0.0
7,0.0,7.5
11,2.,0.0
17,2.0,7.5
101,2.1,7.0
103,2.1,5.25
111,4.1,7.0
113,4.1,5.25
*NGEN,NSET=INNER
1,7,2
*NGEN,NSET=OUTER
111,113,2
*NGEN
11,17,2
101,103
*ELEMENT,TYPE=CAX4,ELSET=STEEL
1,1,11,13,3
11,101,103,113,111
*ELGEN,ELSET=STEEL
1,3,2
*ELSET,ELSET=ETOP
11, 
*ELSET,ELSET=EBOT
3,2,1
*surface,NAME=ASURF
ETOP,S1
*surface,NAME=BSURF
EBOT,S2
*CONTACT PAIR,INTERACTION=ROUGH,SMOOTH=0.1
ASURF,BSURF
*SURFACE INTERACTION,NAME=ROUGH
*FRICTION
0.2, 
*SOLID SECTION,ELSET=STEEL,MATERIAL=STEEL
*MATERIAL,NAME=STEEL
*ELASTIC
 30.E6,0.3
**********
*STEP,NLGEOM,UNSYMM=YES
  CONTACT
*STATIC
0.7, 1.0
*CONTROLS,PARAMETERS=FIELD
1.0E-6, 
*BOUNDARY
 1,2
 11,2
 INNER,1
 OUTER,1,1,-.15
 OUTER,2
*PRINT,CONTACT=YES
*CONTACT PRINT,SLAVE=ASURF
*OUTPUT,FIELD,FREQ=5
*CONTACT OUTPUT,VARIABLE=PRESELECT,SLAVE=ASURF
*EL PRINT
S,E
*NODE PRINT
U,RF
*OUTPUT,FIELD,FREQ=5
*ELEMENT OUTPUT
S,E
*NODE OUTPUT
U,RF
*OUTPUT,HISTORY
*ELEMENT OUTPUT,ELSET=STEEL
VOL,
*END STEP
*STEP,NLGEOM,UNSYMM=YES
  MOVE OUTER ACROSS
*STATIC
 1.,10.,1.
*BOUNDARY,OP=NEW
 INNER,1
1,2
11,2
OUTER,1,1,-.15
OUTER,2,2,-4.
*END STEP