*HEADING
	3-D ELEMENT IN CONTACT WITH ANOTHER 3-D DEFORMABLE ELEMENT.
	NORMALS ARE MODIFIED. VERIFICATION FOR *CLEARANCE OPTION.
*NODE
*ELEMENT,TYPE=C3D8,ELSET=BOT
*ELEMENT,TYPE=C3D8,ELSET=TOP
*SOLID SECTION,ELSET=TOP,MATERIAL=MAT
*SOLID SECTION,ELSET=BOT,MATERIAL=MAT
*MATERIAL,NAME=MAT
*ELASTIC
3.E7,0.0
*surface,NAME=TOPS
TOP,S3
*surface,type=node,NAME=SLAVE
*CLEARANCE,SLAVE=SLAVE,MASTER=TOPS,TABULAR
*SURFACE INTERACTION,NAME=ISLS
*CONTACT PAIR,INTERACTION=ISLS, SMALL SLIDING
SLAVE,TOPS
*BOUNDARY
1,1,3
2,1,3
5,1,3
6,1,3
13,2,3
14,1,3
15,1,1
11,1,1
*STEP,INC=50,NLGEOM
*STATIC
0.1,1.0
*BOUNDARY
11,2,2,-0.2
12,2,2,-0.2
15,2,2,-0.2
16,2,2,-0.2
*PRINT,CONTACT=YES
*NODE FILE,FREQ=100
U,RF
*EL FILE,FREQ=100
S,
E,
*ENDSTEP