*HEADING
 : TWO DIMENSIONAL HEAT TRANSFER INTERFACE
          GAP CONDUCTANCE
          TIE CONSTRAINT WITH ADJUST
*RESTART,WRITE
*NODE
1,10.,0.0
2,11.0,0.0
3,11.0,.5
4,10.0,0.5
5,10.0,0.55
6,11.,0.55
7,11.,1.0
8,10.,1.0
11,10.,-0.1
12,11.,-0.1
17,11.,-1.0
18,10.,-1.0
*NSET, NSET=SIDE3
7,8
*NSET, NSET=BOT
11,12,17,18
*ELEMENT,TYPE=DC2D4,ELSET=MID
1,1,2,3,4
*ELEMENT,TYPE=DC2D4,ELSET=TOP
2,5,6,7,8
*ELEMENT,TYPE=DC2D4,ELSET=BOT
3,18,17,12,11
*ELSET, ELSET=SOLID
1,2,3
*surface, NAME=SURF1
TOP,S1
*surface, NAME=SURF2
MID,S3
*surface, NAME=SURF3
MID,S1
*surface, NAME=SURF4
BOT,S3
*TIE,NAME=TIE,POSITION TOLERANCE=0.1
SURF1,SURF2
*CONTACT PAIR, INTERACTION=GAP
SURF3,SURF4
*SURFACE INTERACTION, NAME=GAP
*GAP CONDUCTANCE
10.,0.
10.,1.
*SOLID SECTION,ELSET=SOLID,MATERIAL=SOLMAT
*MATERIAL,NAME=SOLMAT
*CONDUCTIVITY
1., 
*STEP
*HEAT TRANSFER, STEADY STATE
*NODE FILE
 NT,
 RFL,
*OUTPUT,FIELD
*NODE OUTPUT
NT,
RFL,
*EL PRINT,FREQ=0
*NODE PRINT
 NT,
 RFL,
*BOUNDARY,OP=NEW
SIDE3,11,,100.
BOT,11,,50.
*CONTACT PRINT
*CONTACT FILE
*OUTPUT,FIELD
*CONTACT OUTPUT,VARIABLE=PRESELECT
*ENDSTEP