*HEADING
	2-D ELEMENTS IN CONTACT WITH A 2-D RIGID ELEMENT.
	NORMALS ARE NOT MODIFIED. VERIFICATION FOR *CLEARANCE AND *CONTACT 
        INTERFERENCE OPTIONS.
*preprint,model=yes,history=yes
*NODE
1,
2,1.,
3,1.,1.1,
4,,1.1
21,2.
22,3.,
23,3.,1.1,
24,2.,1.1
31,4.
32,5.
33,5.,1.1,
34,4.,1.1
11,-1.,1.0
12,6.,1.0
13,2.5,3.
14,-1.,3.
*NSET,NSET=NOD1
1,21,31
*NSET,NSET=NOD2
2,22,32
*ELEMENT,TYPE=CPE4,ELSET=BOT
1,1,2,3,4
2,21,22,23,24
3,31,32,33,34
*ELSET,ELSET=BOT1
1,
*ELSET,ELSET=BOT2
2,
*ELSET,ELSET=BOT3
3,
*ELEMENT,TYPE=R2D2,ELSET=TOP
11,12,11
*RIGID BODY,ELSET=TOP,REF NODE=13
*SOLID SECTION,ELSET=BOT,MATERIAL=MAT
*MATERIAL,NAME=MAT
*ELASTIC
3.E7,0.0
*SURFACE,NAME=TOPS
TOP,SPOS
*SURFACE,NAME=SECONDARY1
BOT1,S3
*SURFACE,NAME=SECONDARY2
BOT2,S3
*SURFACE,NAME=SECONDARY3
BOT3,S3
*CLEARANCE,SECONDARY=SECONDARY1,MAIN=TOPS,TABULAR
3,-0.1
4,-0.1
*CLEARANCE,SECONDARY=SECONDARY2,MAIN=TOPS,VALUE=0.0
*CLEARANCE,SECONDARY=SECONDARY3,MAIN=TOPS,TABULAR
33,0.0
34,0.0
*SURFACE INTERACTION,NAME=ISLS
*CONTACT PAIR,INTERACTION=ISLS, SMALL SLIDING
SECONDARY1,TOPS
*CONTACT PAIR,INTERACTION=ISLS, SMALL SLIDING
SECONDARY2,TOPS
*CONTACT PAIR,INTERACTION=ISLS, SMALL SLIDING
SECONDARY3,TOPS
*BOUNDARY
NOD1,1,2
NOD2,2,2
13,1,1
13,3,6
*STEP,INC=20,NLGEOM
*STATIC
0.2,1.
*CONTACT INTERFERENCE,SHRINK
SECONDARY1,TOPS
*EL FILE
S,
*BOUNDARY
13,2,2,0.0
*OUTPUT,FIELD
*ELEMENT OUTPUT
S,
*NODE FILE
U,
*OUTPUT,FIELD
*NODE OUTPUT
U,
*CONTACT FILE,SECONDARY=SECONDARY1,MAIN=TOPS
*OUTPUT,FIELD
*CONTACT OUTPUT,VARIABLE=PRESELECT,SECONDARY=SECONDARY1,MAIN=TOPS
*CONTACT PRINT
*PRINT,CONTACT=YES
*ENDSTEP
*STEP,INC=50,NLGEOM
*STATIC
0.1,1.0
*BOUNDARY
13,2,2,-0.2
*PRINT,CONTACT=YES
*NODE FILE,FREQ=100
U,RF
*OUTPUT,FIELD,FREQ=100
*NODE OUTPUT
U,RF
*EL FILE,FREQ=100
S,
E,
*OUTPUT,FIELD,FREQ=100
*ELEMENT OUTPUT
S,
E,
*ENDSTEP